feat: Add data export/import functionality (#22)

* feat: add data export/import functionality

- Add /export and /import API endpoints with schema-independent JSON format
- Export includes: medications, dose history, settings, share links
- Uses _exportId references for medications, remapped on import
- Images exported as base64 data URLs
- Optional sensitive data inclusion (shoutrrr URLs, etc.)
- Import replaces all existing data with confirmation warning
- Add comprehensive test coverage
- Add English and German translations
- Add frontend UI in Settings page with export/import controls

* fix: correct JSX structure and TypeScript types

- Fix modal placement outside ternary expression in Settings
- Add type assertion for request.body in import route test

* docs: translate copilot-instructions to English

- Add explicit rule that English is the primary language
- Translate all German sections to English
- User may communicate in German, but all project artifacts must be English

.env.example

@@ -78,4 +78,44 @@ REMINDER_DAYS_BEFORE=7
 # Admin settings (not editable in UI)
 REMINDER_HOUR=6                   # 24h format (0-23), e.g. 6 = 6:00 AM, 18 = 6:00 PM
 REMINDER_MINUTES_BEFORE=15        # Minutes before intake to send reminder
-EXPIRY_WARNING_DAYS=30            # Days before expiry to show yellow warning
+EXPIRY_WARNING_DAYS=30            # Days before expiry to show yellow warning
+
+# =============================================================================
+# Default User Settings (applied when new user is created)
+# =============================================================================
+# These ENV values are only used as DEFAULTS when a new user is created.
+# Once a user saves their settings in the app, these ENV values are ignored
+# for that user - their saved preferences take precedence.
+#
+# Useful for server admins to pre-configure settings for all new users.
+# =============================================================================
+
+# Email notifications (requires SMTP config above)
+# DEFAULT_EMAIL_ENABLED=false
+# DEFAULT_NOTIFICATION_EMAIL=
+# DEFAULT_EMAIL_STOCK_REMINDERS=true
+# DEFAULT_EMAIL_INTAKE_REMINDERS=true
+
+# Push notifications (ntfy/gotify via Shoutrrr)
+# DEFAULT_SHOUTRRR_ENABLED=false
+# DEFAULT_SHOUTRRR_URL=
+# DEFAULT_SHOUTRRR_STOCK_REMINDERS=true
+# DEFAULT_SHOUTRRR_INTAKE_REMINDERS=true
+
+# Repeat/nagging reminders for missed doses
+# DEFAULT_REPEAT_REMINDERS_ENABLED=false
+# DEFAULT_REMINDER_REPEAT_INTERVAL_MINUTES=30
+# DEFAULT_MAX_NAGGING_REMINDERS=5
+# DEFAULT_SKIP_REMINDERS_FOR_TAKEN_DOSES=false
+
+# Stock reminder settings
+# DEFAULT_REPEAT_DAILY_REMINDERS=false
+
+# Stock thresholds (days of supply)
+# DEFAULT_LOW_STOCK_DAYS=30
+# DEFAULT_NORMAL_STOCK_DAYS=90
+# DEFAULT_HIGH_STOCK_DAYS=180
+
+# UI defaults
+# DEFAULT_LANGUAGE=en              # en or de
+# DEFAULT_STOCK_CALCULATION_MODE=automatic  # automatic or manual

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,78 @@
+name: 🐛 Bug Report
+description: Report a bug or unexpected behavior
+labels: ["bug", "triage"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to report a bug! Please fill out the sections below.
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Bug Description
+      description: A clear and concise description of what the bug is.
+      placeholder: What happened?
+    validations:
+      required: true
+
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to Reproduce
+      description: How can we reproduce this issue?
+      placeholder: |
+        1. Go to '...'
+        2. Click on '...'
+        3. See error
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected Behavior
+      description: What did you expect to happen?
+      placeholder: What should have happened instead?
+    validations:
+      required: true
+
+  - type: textarea
+    id: screenshots
+    attributes:
+      label: Screenshots
+      description: If applicable, add screenshots to help explain your problem.
+      placeholder: Drag and drop images here
+
+  - type: dropdown
+    id: deployment
+    attributes:
+      label: Deployment Type
+      description: How are you running MedAssist?
+      options:
+        - Docker Compose (Production)
+        - Docker Compose (Development)
+        - Local development (npm run dev)
+        - Other
+    validations:
+      required: true
+
+  - type: input
+    id: browser
+    attributes:
+      label: Browser
+      description: What browser are you using?
+      placeholder: e.g. Chrome 120, Firefox 121, Safari 17
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant Log Output
+      description: Please copy and paste any relevant log output (backend or browser console).
+      render: shell
+
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional Context
+      description: Add any other context about the problem here.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: true
+contact_links:
+  - name: 💬 Discussions
+    url: https://github.com/DanielVolz/medassist-ng/discussions
+    about: Ask questions or share ideas in Discussions
+  - name: 📖 Documentation
+    url: https://github.com/DanielVolz/medassist-ng#readme
+    about: Check the README for setup and usage instructions

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,77 @@
+name: ✨ Feature Request
+description: Suggest a new feature or improvement
+labels: ["enhancement", "triage"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for suggesting an improvement! Please fill out the sections below.
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem or Motivation
+      description: Is your feature request related to a problem? Please describe.
+      placeholder: I'm always frustrated when...
+    validations:
+      required: true
+
+  - type: textarea
+    id: solution
+    attributes:
+      label: Proposed Solution
+      description: Describe the solution you'd like to see.
+      placeholder: A clear and concise description of what you want to happen.
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives Considered
+      description: Describe any alternative solutions or features you've considered.
+      placeholder: Other approaches you thought about
+
+  - type: dropdown
+    id: area
+    attributes:
+      label: Affected Area
+      description: Which part of the app does this affect?
+      options:
+        - Dashboard
+        - Medications
+        - Schedule / Timeline
+        - Planner
+        - Settings
+        - Notifications (Email/Push)
+        - Authentication
+        - Share functionality
+        - Mobile experience
+        - API / Backend
+        - Other
+    validations:
+      required: true
+
+  - type: dropdown
+    id: priority
+    attributes:
+      label: Priority (your opinion)
+      description: How important is this feature to you?
+      options:
+        - Nice to have
+        - Would be helpful
+        - Important for my use case
+        - Critical / Blocking
+
+  - type: textarea
+    id: mockups
+    attributes:
+      label: Mockups / Examples
+      description: If you have any mockups, screenshots, or examples from other apps, add them here.
+      placeholder: Drag and drop images here
+
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional Context
+      description: Add any other context about the feature request here.

.github/codeql/codeql-config.yml

@@ -0,0 +1,17 @@
+name: "MedAssist CodeQL Config"
+
+# Paths to ignore in CodeQL analysis
+paths-ignore:
+  - "**/node_modules/**"
+  - "**/dist/**"
+  - "**/*.test.ts"
+  - "**/test/**"
+
+# Query filters to suppress false positives
+query-filters:
+  # Rate limiting IS implemented via @fastify/rate-limit plugin (registered in index.ts)
+  # Route-specific limits are applied via config.rateLimit option
+  # CodeQL doesn't recognize this Fastify-specific pattern
+  - exclude:
+      id: js/missing-rate-limiting
+

.github/copilot-instructions.md

@@ -1,5 +1,11 @@
 # MedAssist-ng - AI Coding Instructions
 
+## General Rules
+
+- **English is the primary language**: All code, comments, documentation, commit messages, PR descriptions, and GitHub releases MUST be written in English. The user may communicate in German, but all project artifacts must be in English.
+- **No temporary files**: Delete temporary scripts/files immediately after use. Do not commit temporary debug scripts, test files, or one-off utilities to the repository.
+- **Clean workspace**: Always clean up after yourself. If you create a file for a specific task, delete it once done.
+
 ## Architecture Overview
 
 MedAssist-ng is a **medication tracking and planning app** with a monorepo structure:
@@ -33,8 +39,228 @@ docker compose up -d
 
 # Database migrations
 cd backend && npm run migrate
+
+# Run tests
+cd backend && npm test              # Run all tests
+cd backend && npm run test:coverage # Run with coverage report
 ```
 
+## Testing (MANDATORY)
+
+> ⚠️ **IMPORTANT**: Every new feature MUST be covered by tests!
+> Pull Requests without tests for new features will not be accepted.
+
+### Test Framework
+- **Vitest 2.1** with v8 Coverage
+- Tests in `backend/src/test/*.test.ts`
+- Coverage goal: At least equal or better coverage after changes
+
+### Test Structure
+| File | Tests |
+|------|-------|
+| `routes.test.ts` | API endpoints (Auth, Medications, Doses, Settings, Share, Planner) |
+| `services.test.ts` | Scheduler utilities (Timezone, Blisters, Usage calculation) |
+| `db.test.ts` | Database schema and operations |
+
+### Writing Tests
+
+```typescript
+// Backend Test Example (backend/src/test/example.test.ts)
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import { createTestApp, createTestUser } from './routes.test'; // Test-Utilities
+
+describe('Feature Name', () => {
+  let app: FastifyInstance;
+  let authToken: string;
+
+  beforeAll(async () => {
+    app = await createTestApp();
+    const user = await createTestUser(app);
+    authToken = user.token;
+  });
+
+  afterAll(async () => {
+    await app.close();
+  });
+
+  it('should do something specific', async () => {
+    const response = await app.inject({
+      method: 'GET',
+      url: '/endpoint',
+      headers: { Authorization: `Bearer ${authToken}` }
+    });
+    
+    expect(response.statusCode).toBe(200);
+    expect(response.json()).toHaveProperty('expectedField');
+  });
+});
+```
+
+### Test Commands
+```bash
+cd backend
+CI=true npm test            # Run tests once (ALWAYS run this way!)
+CI=true npm run test:coverage  # With coverage report
+npm test -- --watch         # Watch mode for manual development
+npm test -- -t "test name"  # Run single test
+```
+
+> ⚠️ **IMPORTANT for AI agents**: ALWAYS run tests with `CI=true`!
+> Without `CI=true`, Vitest runs in watch mode and waits for input.
+
+## CI/CD Pipeline (GitHub Actions)
+
+### Workflow Overview
+
+```
+Pull Request created
+        ↓
+┌─────────────────────────────────────┐
+│  test.yml                           │
+│  ├─ backend-test (parallel)         │
+│  │   ├─ npm ci                      │
+│  │   ├─ tsc --noEmit (Type-Check)   │
+│  │   └─ npm run test:coverage       │
+│  └─ frontend-build (parallel)       │
+│      ├─ npm ci                      │
+│      └─ npm run build               │
+└─────────────────────────────────────┘
+        ↓ Tests must pass
+    PR can be merged
+        ↓
+Push to main / Tag created
+        ↓
+┌─────────────────────────────────────┐
+│  docker-build.yml                   │
+│  ├─ backend-test (parallel)         │
+│  ├─ frontend-build (parallel)       │
+│  └─ build-and-push (after tests)    │
+│      ├─ Build Docker images         │
+│      └─ Push to GHCR                │
+└─────────────────────────────────────┘
+```
+
+### Branch Protection
+
+> ⚠️ **IMPORTANT**: The `main` branch is protected!  
+> Direct pushing to `main` is **not possible** - GitHub will reject the push.  
+> All changes must go through Pull Requests.
+
+- **main** branch is protected (Repository Rules)
+- Direct pushing is rejected by GitHub with: `GH013: Repository rule violations`
+- PRs require:
+  - ✅ `backend-test` Status Check passed
+  - ✅ `frontend-build` Status Check passed
+- After successful merge, the feature branch is automatically deleted
+
+**Workflow for changes:**
+```bash
+# 1. Create feature branch
+git checkout -b feat/my-feature
+
+# 2. Commit and push changes
+git add . && git commit -m "feat: Description"
+git push -u origin feat/my-feature
+
+# 3. Create PR (via GitHub CLI or Web)
+gh pr create --title "My Feature" --body "Description"
+
+# 4. Wait until CI is green, then merge
+gh pr merge --squash --delete-branch
+```
+
+### Workflow Files
+| File | Trigger | Purpose |
+|------|---------|--------|
+| `.github/workflows/test.yml` | Pull Requests | Run tests, block PR on failures |
+| `.github/workflows/docker-build.yml` | Push to main, Tags | Tests + Build and push Docker images |
+
+### Adding New Code - Checklist
+1. ✅ Implement feature
+2. ✅ Write tests for the feature
+3. ✅ Run `npm run test:coverage` locally
+4. ✅ Coverage must not decrease
+5. ✅ Create and push feature branch
+6. ✅ Create Pull Request
+7. ✅ Wait until CI is green
+8. ✅ Merge PR (branch is automatically deleted)
+
+## GitHub Releases
+
+> ⚠️ **IMPORTANT**: All GitHub Releases must be written in **English**!
+
+### Creating Release Notes
+
+> ⚠️ **MANDATORY**: GitHub Releases MUST contain a written message!
+> Not just auto-generated commit lists, but a brief descriptive text.
+
+**Structure of a release text:**
+
+1. **Intro** (1-2 sentences): What's new, what was improved?
+2. **Features & Changes**: Brief list of key changes
+3. **Breaking Changes Warning** (if applicable): See below
+4. **Optional**: Acknowledgements, documentation links
+
+**Example of good release notes:**
+
+```markdown
+## What's New
+
+This release adds intake reminder notifications and improves medication stock tracking. Users can now configure nagging reminders for missed doses and receive alerts when medication stock runs low.
+
+### New Features
+- 🔔 Intake reminder notifications with configurable nagging intervals
+- 📊 Enhanced stock calculation with blister tracking
+- 🌐 German translation improvements
+
+### Bug Fixes
+- Fixed timezone handling in dose scheduling
+- Improved image upload validation
+
+### Full Changelog
+[All commits since v1.2.0](link)
+```
+
+### Breaking Changes Warning (CRITICAL!)
+
+> ⚠️ **MANDATORY**: If an update breaks existing configurations or stored data, it MUST be prominently warned about in the release notes!
+
+**Breaking Changes include:**
+- Database schema changes without automatic migration
+- Removed or renamed ENV variables
+- Changed API endpoints
+- Incompatible `.env` format changes
+- Loss of stored data after update
+
+**Format for Breaking Changes:**
+
+```markdown
+## ⚠️ BREAKING CHANGES - Please read before updating!
+
+**Database migration required**: This update changes the database schema. 
+Existing installations need to:
+1. Create backup of `data/` folder
+2. Stop containers
+3. Perform update
+4. If issues occur: Rollback using backup
+
+**ENV variables changed**: 
+- `OLD_VAR` was renamed to `NEW_VAR`
+- `REMOVED_VAR` is no longer supported
+
+**Medication data**: Intake schedules with only one time entry will be automatically 
+migrated. Please verify all times are correct after update.
+```
+
+**What is NOT a Breaking Change:**
+- ✅ New optional columns with DEFAULT values
+- ✅ New ENV variables (with sensible defaults)
+- ✅ New features that don't affect existing data
+- ✅ Bug fixes that correct behavior
+
+**Rule of thumb**: If a user can simply run `docker compose pull && docker compose up -d` 
+without adjusting anything → Not a Breaking Change.
+
 ## Key Patterns
 
 ### Backend Routes (`backend/src/routes/`)
@@ -142,9 +368,25 @@ Each blister defines a recurring intake:
 | Stock Thresholds | Warning days, critical days, expiry warning days |
 | Email Notifications | Enable, email address, stock/intake toggles |
 | Push Notifications (Shoutrrr) | Enable, URL (ntfy/gotify/etc), stock/intake toggles |
-| Reminder Settings | Days before, repeat daily |
+| Reminder Settings | Days before, repeat daily, skip for taken, repeat/nagging |
 | SMTP | Email config (read-only from .env) |
 
+### Settings ENV Defaults
+All user settings can be pre-configured via ENV variables (see `.env.example`).
+These are only used as **defaults when a new user is created**.
+Once a user saves settings in the app, their saved values take precedence over ENV.
+
+| ENV Variable | Setting | Default |
+|--------------|---------|---------|
+| `DEFAULT_EMAIL_ENABLED` | Email notifications | false |
+| `DEFAULT_SHOUTRRR_ENABLED` | Push notifications | false |
+| `DEFAULT_SHOUTRRR_URL` | ntfy/gotify URL | (empty) |
+| `DEFAULT_REPEAT_REMINDERS_ENABLED` | Nagging reminders | false |
+| `DEFAULT_REMINDER_REPEAT_INTERVAL_MINUTES` | Nag interval | 30 |
+| `DEFAULT_MAX_NAGGING_REMINDERS` | Max nags | 5 |
+| `DEFAULT_LOW_STOCK_DAYS` | Low stock threshold | 30 |
+| `DEFAULT_LANGUAGE` | UI language | en |
+
 ## Database Schema (`backend/src/db/schema.ts`)
 
 | Table | Description |
@@ -206,14 +448,54 @@ Example: `5-0-1735344000000` = Medication 5, Blister 0, timestamp
 - **Environment**: Copy `.env.example` → `.env`, secrets must be 10+ chars
 - **i18n**: All UI text via `t('key')` function, translations in `frontend/src/i18n/*.json`
 
-## Database Schema Changes
+## Database Schema Changes (IMPORTANT: Backward Compatibility!)
 
-When adding new database columns:
+> ⚠️ **CRITICAL**: The app MUST remain backward compatible with older databases!
+> Users upgrade their Docker containers but keep their existing DB.
+> The app must NOT crash if old columns are missing.
 
-1. **Update schema**: `backend/src/db/schema.ts` - Add the Drizzle column definition
-2. **Update client.ts**: `backend/src/db/client.ts` - Add column to `CREATE TABLE IF NOT EXISTS`
-3. **Update migrate.ts**: `backend/src/db/migrate.ts` - Same as client.ts
-4. **Delete old DB**: `rm backend/data/medassist-ng.db` and restart
+### Rules for New Columns
+
+1. **ALWAYS with DEFAULT value**: New columns must have `NOT NULL DEFAULT <value>`
+2. **NULL-safe in code**: All queries must use `?? defaultValue` or `?? false`
+3. **Update schema SQL**: Add to these files:
+   - `backend/src/db/schema.ts` - Drizzle Schema
+   - `backend/src/db/schema-sql.ts` - `getTableCreationSQL()` for new DBs
+   - `backend/src/db/client.ts` - `ALTER TABLE ADD COLUMN IF NOT EXISTS` migration
+4. **Update test schemas**: All test files with their own schema:
+   - `backend/src/test/e2e-routes.test.ts`
+   - `backend/src/test/integration.test.ts`
+   - `backend/src/test/planner.test.ts`
+
+### Example: Adding a New Column
+
+```typescript
+// 1. schema.ts - Drizzle definition
+maxNaggingReminders: integer("max_nagging_reminders").notNull().default(5),
+
+// 2. schema-sql.ts - For new databases
+"max_nagging_reminders integer NOT NULL DEFAULT 5,"
+
+// 3. client.ts - Migration for existing DBs (IN ensureTablesExist())
+await client.execute(`ALTER TABLE user_settings ADD COLUMN max_nagging_reminders integer NOT NULL DEFAULT 5`).catch(() => {});
+
+// 4. Routes - NULL-safe reading
+maxNaggingReminders: settings.maxNaggingReminders ?? 5,
+```
+
+### What is NOT Allowed
+
+- ❌ Deleting or renaming columns (breaks old DBs)
+- ❌ `NOT NULL` without `DEFAULT` (INSERT fails)
+- ❌ Reading columns without fallback in code
+- ❌ Documenting "delete DB" as a solution
+
+### When Backward Compatibility is NOT Possible
+
+If a breaking change is unavoidable:
+1. **Explicitly communicate**: Document in release notes
+2. **Migration script**: Provide automatic upgrade script
+3. **Version check**: App should check DB version and warn
 
 ## File Locations
 

.github/workflows/codeql.yml

@@ -0,0 +1,42 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  schedule:
+    - cron: "0 6 * * 1" # Weekly on Monday at 6am UTC
+  workflow_dispatch: # Allow manual trigger
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [javascript-typescript]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: ${{ matrix.language }}
+          config-file: ./.github/codeql/codeql-config.yml
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v3
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3
+        with:
+          category: "/language:${{ matrix.language }}"

.github/workflows/docker-build.yml

@@ -4,18 +4,6 @@ on:
   push:
     branches: [main]
     tags: ['v*']
-    paths:
-      - 'backend/**'
-      - 'frontend/**'
-      - 'docker-compose*.yml'
-      - '.github/workflows/docker-build.yml'
-  pull_request:
-    branches: [main]
-    paths:
-      - 'backend/**'
-      - 'frontend/**'
-      - 'docker-compose*.yml'
-      - '.github/workflows/docker-build.yml'
   workflow_dispatch:
     inputs:
       tag:
@@ -23,11 +11,59 @@ on:
         required: false
         default: ''
 
+# Default minimal permissions
+permissions:
+  contents: read
+
 env:
   REGISTRY: ghcr.io
 
 jobs:
+  # =============================================================================
+  # Run Tests First
+  # =============================================================================
+  backend-test:
+    name: Backend Tests
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    defaults:
+      run:
+        working-directory: backend
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+          cache-dependency-path: backend/package-lock.json
+      - run: npm ci
+      - run: npx tsc --noEmit
+      - run: npm run test:run
+
+  frontend-build:
+    name: Frontend Build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    defaults:
+      run:
+        working-directory: frontend
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+      - run: npm ci
+      - run: npm run build
+
+  # =============================================================================
+  # Build and Push Docker Images (only after tests pass)
+  # =============================================================================
   build-and-push:
+    needs: [backend-test, frontend-build]
     runs-on: ubuntu-latest
     permissions:
       contents: read

.github/workflows/test.yml

@@ -0,0 +1,79 @@
+name: Test
+
+on:
+  pull_request:
+    branches: [main]
+
+# Minimal permissions for security
+permissions:
+  contents: read
+
+jobs:
+  # =============================================================================
+  # Backend Tests
+  # =============================================================================
+  backend-test:
+    name: Backend Tests
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    defaults:
+      run:
+        working-directory: backend
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+          cache-dependency-path: backend/package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: TypeScript type check
+        run: npx tsc --noEmit
+
+      - name: Run tests with coverage
+        run: npm run test:coverage
+
+      - name: Upload coverage report
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: backend-coverage
+          path: backend/coverage/
+          retention-days: 7
+
+  # =============================================================================
+  # Frontend Build Validation
+  # =============================================================================
+  frontend-build:
+    name: Frontend Build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    defaults:
+      run:
+        working-directory: frontend
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: TypeScript type check & build
+        run: npm run build

backend/package.json

@@ -1,13 +1,16 @@
 {
   "name": "medassist-ng-backend",
-  "version": "1.0.2",
+  "version": "1.1.0",
   "private": true,
   "type": "module",
   "scripts": {
     "dev": "tsx watch src/index.ts",
     "build": "tsc -p tsconfig.json",
     "start": "node dist/index.js",
-    "migrate": "tsx src/db/migrate.ts"
+    "migrate": "tsx src/db/migrate.ts",
+    "test": "vitest",
+    "test:run": "vitest run",
+    "test:coverage": "vitest run --coverage"
   },
   "dependencies": {
     "@fastify/cookie": "^10.0.1",
@@ -15,7 +18,7 @@
     "@fastify/helmet": "^13.0.2",
     "@fastify/jwt": "^10.0.0",
     "@fastify/multipart": "^9.3.0",
-    "@fastify/rate-limit": "^10.1.0",
+    "@fastify/rate-limit": "^10.3.0",
     "@fastify/sensible": "^6.0.4",
     "@fastify/static": "^8.3.0",
     "@libsql/client": "^0.10.0",
@@ -30,7 +33,11 @@
   "devDependencies": {
     "@types/node": "^22.7.4",
     "@types/nodemailer": "^6.4.21",
+    "@types/supertest": "^6.0.2",
+    "@vitest/coverage-v8": "^4.0.16",
+    "supertest": "^7.0.0",
     "tsx": "^4.19.0",
-    "typescript": "^5.5.4"
+    "typescript": "^5.5.4",
+    "vitest": "^4.0.16"
   }
 }

backend/src/db/client.ts

@@ -3,46 +3,134 @@ import { drizzle } from "drizzle-orm/libsql";
 import { existsSync, mkdirSync, accessSync, constants, statSync, writeFileSync } from "fs";
 import { resolve } from "path";
 import dotenv from "dotenv";
+import { getTableCreationSQL } from "./schema-sql.js";
 
 dotenv.config({ path: process.env.DOTENV_PATH || ".env" });
 
+// =============================================================================
+// Exported utility functions for testing
+// =============================================================================
+
+/** Build the database URL from a path */
+export function buildDbUrl(dbPath: string): string {
+  return `file:${dbPath}`;
+}
+
+/** Get data directory and database path */
+export function getDbPaths(cwd: string = process.cwd()): { dataDir: string; dbPath: string; url: string } {
+  const dataDir = resolve(cwd, "data");
+  const dbPath = resolve(dataDir, "medassist-ng.db");
+  const url = buildDbUrl(dbPath);
+  return { dataDir, dbPath, url };
+}
+
+/** Ensure data directory exists and is writable */
+export function ensureDataDirectory(dataDir: string): { success: boolean; error?: string } {
+  try {
+    if (!existsSync(dataDir)) {
+      mkdirSync(dataDir, { recursive: true });
+    }
+    
+    // Check if directory is writable
+    accessSync(dataDir, constants.W_OK);
+    
+    // Try to create a test file to verify write access
+    const testFile = resolve(dataDir, ".write-test");
+    writeFileSync(testFile, "test");
+    
+    return { success: true };
+  } catch (err: any) {
+    return { success: false, error: err.message };
+  }
+}
+
+/** Get the SQL statements for creating all tables (re-exported from schema-sql) */
+export { getTableCreationSQL } from "./schema-sql.js";
+
+/** Run table creation migrations on a client */
+export async function runTableMigrations(client: Client): Promise<{ success: boolean; errors: string[] }> {
+  const tableCreations = getTableCreationSQL();
+  const errors: string[] = [];
+
+  for (const sql of tableCreations) {
+    try {
+      await client.execute(sql);
+    } catch (e: any) {
+      errors.push(e.message);
+    }
+  }
+
+  // Run ALTER TABLE migrations for backward compatibility with older databases
+  // These add new columns to existing tables (silently fail if column already exists)
+  const alterMigrations = [
+    // Added in v1.x - repeat reminders and nagging settings
+    `ALTER TABLE user_settings ADD COLUMN skip_reminders_for_taken_doses integer NOT NULL DEFAULT 0`,
+    `ALTER TABLE user_settings ADD COLUMN repeat_reminders_enabled integer NOT NULL DEFAULT 0`,
+    `ALTER TABLE user_settings ADD COLUMN reminder_repeat_interval_minutes integer NOT NULL DEFAULT 30`,
+    `ALTER TABLE user_settings ADD COLUMN max_nagging_reminders integer NOT NULL DEFAULT 5`,
+  ];
+
+  for (const sql of alterMigrations) {
+    try {
+      await client.execute(sql);
+    } catch (e: any) {
+      // Silently ignore "duplicate column" errors - column already exists
+      if (!e.message?.includes("duplicate column")) {
+        errors.push(e.message);
+      }
+    }
+  }
+
+  return { success: errors.length === 0, errors };
+}
+
+/** Ensure default user exists for auth-disabled mode */
+export async function ensureDefaultUser(client: Client, authEnabled: boolean): Promise<boolean> {
+  if (authEnabled) {
+    return false; // No default user needed
+  }
+
+  try {
+    const result = await client.execute("SELECT id FROM users WHERE id = 1");
+    if (result.rows.length === 0) {
+      await client.execute(
+        "INSERT INTO users (id, username, auth_provider) VALUES (1, 'default', 'local')"
+      );
+      return true; // Created
+    }
+    return false; // Already exists
+  } catch (e: any) {
+    console.error(`[DB] Error creating default user:`, e.message);
+    return false;
+  }
+}
+
+// =============================================================================
+// Database initialization (runs on import)
+// =============================================================================
+
 // Use absolute path to ensure it works in Docker
-const dataDir = resolve(process.cwd(), "data");
-const dbPath = resolve(dataDir, "medassist-ng.db");
-const url = `file:${dbPath}`;
+const { dataDir, dbPath, url } = getDbPaths();
 
 console.log(`[DB] Data directory: ${dataDir}`);
 console.log(`[DB] Database path: ${dbPath}`);
 console.log(`[DB] Database URL: ${url}`);
 
 // Ensure data directory exists and is writable
-try {
-  if (!existsSync(dataDir)) {
-    mkdirSync(dataDir, { recursive: true });
-    console.log(`[DB] Created data directory: ${dataDir}`);
-  } else {
-    console.log(`[DB] Data directory exists: ${dataDir}`);
-  }
-  
-  // Check if directory is writable
-  accessSync(dataDir, constants.W_OK);
+const dirResult = ensureDataDirectory(dataDir);
+if (!dirResult.success) {
+  console.error(`[DB] ERROR: Cannot access data directory: ${dirResult.error}`);
+  console.error(`[DB] Please ensure the volume mount has correct permissions.`);
+  console.error(`[DB] Try running on host: sudo chown -R 1000:1000 ${dataDir}`);
+  process.exit(1);
+} else {
   console.log(`[DB] Data directory is writable`);
   
   // Log directory stats
   const stats = statSync(dataDir);
   console.log(`[DB] Directory permissions: ${stats.mode.toString(8)}`);
   console.log(`[DB] Directory UID: ${stats.uid}, GID: ${stats.gid}`);
-  
-  // Try to create a test file to verify write access
-  const testFile = resolve(dataDir, ".write-test");
-  writeFileSync(testFile, "test");
   console.log(`[DB] Write test successful`);
-  
-} catch (err: any) {
-  console.error(`[DB] ERROR: Cannot access data directory: ${err.message}`);
-  console.error(`[DB] Please ensure the volume mount has correct permissions.`);
-  console.error(`[DB] Try running on host: sudo chown -R 1000:1000 ${dataDir}`);
-  process.exit(1);
 }
 
 let client: Client;
@@ -59,120 +147,17 @@ export const db = drizzle(client);
 
 // Auto-run migrations (self-healing database)
 async function runMigrations() {
-  // First, ensure all tables exist (for fresh databases)
-  const tableCreations = [
-    `CREATE TABLE IF NOT EXISTS users (
-      id integer PRIMARY KEY AUTOINCREMENT,
-      username text NOT NULL UNIQUE,
-      password_hash text,
-      avatar_url text,
-      auth_provider text NOT NULL DEFAULT 'local',
-      oidc_subject text,
-      is_active integer NOT NULL DEFAULT 1,
-      last_login_at integer,
-      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
-      updated_at integer NOT NULL DEFAULT (strftime('%s','now'))
-    )`,
-    `CREATE TABLE IF NOT EXISTS medications (
-      id integer PRIMARY KEY AUTOINCREMENT,
-      user_id integer NOT NULL,
-      name text NOT NULL,
-      generic_name text,
-      taken_by_json text NOT NULL DEFAULT '[]',
-      pack_count integer NOT NULL DEFAULT 1,
-      blisters_per_pack integer NOT NULL DEFAULT 1,
-      pills_per_blister integer NOT NULL DEFAULT 1,
-      loose_tablets integer NOT NULL DEFAULT 0,
-      pill_weight_mg integer,
-      usage_json text NOT NULL DEFAULT '[]',
-      every_json text NOT NULL DEFAULT '[]',
-      start_json text NOT NULL DEFAULT '[]',
-      image_url text,
-      expiry_date text,
-      notes text,
-      intake_reminders_enabled integer NOT NULL DEFAULT 0,
-      updated_at integer NOT NULL DEFAULT (strftime('%s','now')),
-      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
-    )`,
-    `CREATE TABLE IF NOT EXISTS user_settings (
-      id integer PRIMARY KEY AUTOINCREMENT,
-      user_id integer NOT NULL UNIQUE,
-      email_enabled integer NOT NULL DEFAULT 0,
-      notification_email text,
-      email_stock_reminders integer NOT NULL DEFAULT 1,
-      email_intake_reminders integer NOT NULL DEFAULT 1,
-      shoutrrr_enabled integer NOT NULL DEFAULT 0,
-      shoutrrr_url text,
-      shoutrrr_stock_reminders integer NOT NULL DEFAULT 1,
-      shoutrrr_intake_reminders integer NOT NULL DEFAULT 1,
-      reminder_days_before integer NOT NULL DEFAULT 7,
-      repeat_daily_reminders integer NOT NULL DEFAULT 0,
-      low_stock_days integer NOT NULL DEFAULT 30,
-      normal_stock_days integer NOT NULL DEFAULT 90,
-      high_stock_days integer NOT NULL DEFAULT 180,
-      expiry_warning_days integer NOT NULL DEFAULT 90,
-      language text NOT NULL DEFAULT 'en',
-      stock_calculation_mode text NOT NULL DEFAULT 'automatic',
-      last_auto_email_sent text,
-      last_notification_type text,
-      last_notification_channel text,
-      updated_at integer NOT NULL DEFAULT (strftime('%s','now')),
-      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
-    )`,
-    `CREATE TABLE IF NOT EXISTS refresh_tokens (
-      id integer PRIMARY KEY AUTOINCREMENT,
-      user_id integer NOT NULL,
-      token_id text NOT NULL UNIQUE,
-      expires_at integer NOT NULL,
-      rotated_at integer,
-      revoked integer NOT NULL DEFAULT 0,
-      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
-      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
-    )`,
-    `CREATE TABLE IF NOT EXISTS share_tokens (
-      id integer PRIMARY KEY AUTOINCREMENT,
-      user_id integer NOT NULL,
-      token text NOT NULL UNIQUE,
-      taken_by text NOT NULL,
-      schedule_days integer NOT NULL DEFAULT 30,
-      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
-      expires_at integer,
-      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
-    )`,
-    `CREATE TABLE IF NOT EXISTS dose_tracking (
-      id integer PRIMARY KEY AUTOINCREMENT,
-      user_id integer NOT NULL,
-      dose_id text NOT NULL,
-      taken_at integer NOT NULL DEFAULT (strftime('%s','now')),
-      marked_by text,
-      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
-    )`,
-  ];
-
-  for (const sql of tableCreations) {
-    try {
-      await client.execute(sql);
-    } catch (e: any) {
-      console.error(`[DB] Table creation error:`, e.message);
-    }
+  const result = await runTableMigrations(client);
+  if (result.errors.length > 0) {
+    result.errors.forEach(err => console.error(`[DB] Table creation error:`, err));
   }
   console.log(`[DB] Tables verified/created`);
 
   // If auth is disabled, ensure a default user exists (ID=1)
   const authEnabled = process.env.AUTH_ENABLED === "true";
-  if (!authEnabled) {
-    try {
-      // Check if default user exists
-      const result = await client.execute("SELECT id FROM users WHERE id = 1");
-      if (result.rows.length === 0) {
-        await client.execute(
-          "INSERT INTO users (id, username, auth_provider) VALUES (1, 'default', 'local')"
-        );
-        console.log(`[DB] Created default user for auth-disabled mode`);
-      }
-    } catch (e: any) {
-      console.error(`[DB] Error creating default user:`, e.message);
-    }
+  const created = await ensureDefaultUser(client, authEnabled);
+  if (created) {
+    console.log(`[DB] Created default user for auth-disabled mode`);
   }
 }
 

backend/src/db/migrate.ts

@@ -1,10 +1,54 @@
-import { createClient } from "@libsql/client";
+import { createClient, Client } from "@libsql/client";
 import dotenv from "dotenv";
 import fs from "fs";
 import path from "path";
+import { getTableCreationSQL } from "./schema-sql.js";
 
 dotenv.config({ path: process.env.DOTENV_PATH || ".env" });
 
+// =============================================================================
+// Exported utility functions for testing
+// =============================================================================
+
+/** Get the full migration SQL string (re-exported from schema-sql) */
+export { getTableCreationSQL };
+
+/** Split SQL string into individual statements */
+export function splitSQLStatements(sql: string): string[] {
+  return sql.split(';').filter(s => s.trim().length > 0);
+}
+
+/** Execute migration statements on a client */
+export async function executeMigration(client: Client): Promise<{ success: boolean; executed: number; errors: string[] }> {
+  const statements = getTableCreationSQL();
+  const errors: string[] = [];
+  let executed = 0;
+
+  for (const stmt of statements) {
+    try {
+      await client.execute(stmt);
+      executed++;
+    } catch (err: any) {
+      errors.push(err.message);
+    }
+  }
+
+  return { success: errors.length === 0, executed, errors };
+}
+
+/** Get a preview of statement (first N characters) */
+export function getStatementPreview(stmt: string, maxLength: number = 50): string {
+  const trimmed = stmt.trim();
+  if (trimmed.length <= maxLength) {
+    return trimmed;
+  }
+  return trimmed.substring(0, maxLength) + "...";
+}
+
+// =============================================================================
+// CLI execution (only runs when called directly)
+// =============================================================================
+
 const url = "file:./data/medassist-ng.db";
 
 async function main() {
@@ -13,105 +57,10 @@ async function main() {
   
   const client = createClient({ url });
   
-  // Create tables - fresh schema without roles, with per-user settings
-  const sql = `
-    CREATE TABLE IF NOT EXISTS users (
-      id integer PRIMARY KEY AUTOINCREMENT,
-      username text NOT NULL UNIQUE,
-      password_hash text,
-      avatar_url text,
-      auth_provider text NOT NULL DEFAULT 'local',
-      oidc_subject text,
-      is_active integer NOT NULL DEFAULT 1,
-      last_login_at integer,
-      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
-      updated_at integer NOT NULL DEFAULT (strftime('%s','now'))
-    );
-
-    CREATE TABLE IF NOT EXISTS medications (
-      id integer PRIMARY KEY AUTOINCREMENT,
-      user_id integer NOT NULL,
-      name text NOT NULL,
-      generic_name text,
-      taken_by_json text NOT NULL DEFAULT '[]',
-      pack_count integer NOT NULL DEFAULT 1,
-      blisters_per_pack integer NOT NULL DEFAULT 1,
-      pills_per_blister integer NOT NULL DEFAULT 1,
-      loose_tablets integer NOT NULL DEFAULT 0,
-      pill_weight_mg integer,
-      usage_json text NOT NULL DEFAULT '[]',
-      every_json text NOT NULL DEFAULT '[]',
-      start_json text NOT NULL DEFAULT '[]',
-      image_url text,
-      expiry_date text,
-      notes text,
-      intake_reminders_enabled integer NOT NULL DEFAULT 0,
-      updated_at integer NOT NULL DEFAULT (strftime('%s','now')),
-      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
-    );
-
-    CREATE TABLE IF NOT EXISTS user_settings (
-      id integer PRIMARY KEY AUTOINCREMENT,
-      user_id integer NOT NULL UNIQUE,
-      email_enabled integer NOT NULL DEFAULT 0,
-      notification_email text,
-      email_stock_reminders integer NOT NULL DEFAULT 1,
-      email_intake_reminders integer NOT NULL DEFAULT 1,
-      shoutrrr_enabled integer NOT NULL DEFAULT 0,
-      shoutrrr_url text,
-      shoutrrr_stock_reminders integer NOT NULL DEFAULT 1,
-      shoutrrr_intake_reminders integer NOT NULL DEFAULT 1,
-      reminder_days_before integer NOT NULL DEFAULT 7,
-      repeat_daily_reminders integer NOT NULL DEFAULT 0,
-      low_stock_days integer NOT NULL DEFAULT 30,
-      normal_stock_days integer NOT NULL DEFAULT 90,
-      high_stock_days integer NOT NULL DEFAULT 180,
-      language text NOT NULL DEFAULT 'en',
-      stock_calculation_mode text NOT NULL DEFAULT 'automatic',
-      last_auto_email_sent text,
-      last_notification_type text,
-      last_notification_channel text,
-      updated_at integer NOT NULL DEFAULT (strftime('%s','now')),
-      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
-    );
-
-    CREATE TABLE IF NOT EXISTS refresh_tokens (
-      id integer PRIMARY KEY AUTOINCREMENT,
-      user_id integer NOT NULL,
-      token_id text NOT NULL UNIQUE,
-      expires_at integer NOT NULL,
-      rotated_at integer,
-      revoked integer NOT NULL DEFAULT 0,
-      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
-      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
-    );
-
-    CREATE TABLE IF NOT EXISTS share_tokens (
-      id integer PRIMARY KEY AUTOINCREMENT,
-      user_id integer NOT NULL,
-      token text NOT NULL UNIQUE,
-      taken_by text NOT NULL,
-      schedule_days integer NOT NULL DEFAULT 30,
-      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
-      expires_at integer,
-      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
-    );
-
-    CREATE TABLE IF NOT EXISTS dose_tracking (
-      id integer PRIMARY KEY AUTOINCREMENT,
-      user_id integer NOT NULL,
-      dose_id text NOT NULL,
-      taken_at integer NOT NULL DEFAULT (strftime('%s','now')),
-      marked_by text,
-      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
-    );
-  `;
-
-  // Execute each statement separately
-  const statements = sql.split(';').filter(s => s.trim().length > 0);
+  const statements = getTableCreationSQL();
   
   for (const stmt of statements) {
-    console.log("Executing:", stmt.trim().substring(0, 50) + "...");
+    console.log("Executing:", getStatementPreview(stmt));
     await client.execute(stmt);
   }
 
@@ -119,7 +68,11 @@ async function main() {
   process.exit(0);
 }
 
-main().catch((err) => {
-  console.error("Migration failed:", err);
-  process.exit(1);
-});
+// Only run main() if this file is executed directly (not imported)
+const isMainModule = import.meta.url === `file://${process.argv[1]}`;
+if (isMainModule) {
+  main().catch((err) => {
+    console.error("Migration failed:", err);
+    process.exit(1);
+  });
+}

backend/src/db/schema-sql.ts

@@ -0,0 +1,103 @@
+/**
+ * Shared SQL table creation statements for database initialization.
+ * Used by client.ts, migrate.ts, and test setup to avoid duplication.
+ */
+
+/**
+ * Get all SQL table creation statements as an array.
+ * Each statement creates a table if it doesn't exist.
+ */
+export function getTableCreationSQL(): string[] {
+  return [
+    `CREATE TABLE IF NOT EXISTS users (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      username text NOT NULL UNIQUE,
+      password_hash text,
+      avatar_url text,
+      auth_provider text NOT NULL DEFAULT 'local',
+      oidc_subject text,
+      is_active integer NOT NULL DEFAULT 1,
+      last_login_at integer,
+      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      updated_at integer NOT NULL DEFAULT (strftime('%s','now'))
+    )`,
+    `CREATE TABLE IF NOT EXISTS medications (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      user_id integer NOT NULL,
+      name text NOT NULL,
+      generic_name text,
+      taken_by_json text NOT NULL DEFAULT '[]',
+      pack_count integer NOT NULL DEFAULT 1,
+      blisters_per_pack integer NOT NULL DEFAULT 1,
+      pills_per_blister integer NOT NULL DEFAULT 1,
+      loose_tablets integer NOT NULL DEFAULT 0,
+      pill_weight_mg integer,
+      usage_json text NOT NULL DEFAULT '[]',
+      every_json text NOT NULL DEFAULT '[]',
+      start_json text NOT NULL DEFAULT '[]',
+      image_url text,
+      expiry_date text,
+      notes text,
+      intake_reminders_enabled integer NOT NULL DEFAULT 0,
+      updated_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+    )`,
+    `CREATE TABLE IF NOT EXISTS user_settings (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      user_id integer NOT NULL UNIQUE,
+      email_enabled integer NOT NULL DEFAULT 0,
+      notification_email text,
+      email_stock_reminders integer NOT NULL DEFAULT 1,
+      email_intake_reminders integer NOT NULL DEFAULT 1,
+      shoutrrr_enabled integer NOT NULL DEFAULT 0,
+      shoutrrr_url text,
+      shoutrrr_stock_reminders integer NOT NULL DEFAULT 1,
+      shoutrrr_intake_reminders integer NOT NULL DEFAULT 1,
+      reminder_days_before integer NOT NULL DEFAULT 7,
+      repeat_daily_reminders integer NOT NULL DEFAULT 0,
+      skip_reminders_for_taken_doses integer NOT NULL DEFAULT 0,
+      repeat_reminders_enabled integer NOT NULL DEFAULT 0,
+      reminder_repeat_interval_minutes integer NOT NULL DEFAULT 30,
+      max_nagging_reminders integer NOT NULL DEFAULT 5,
+      low_stock_days integer NOT NULL DEFAULT 30,
+      normal_stock_days integer NOT NULL DEFAULT 90,
+      high_stock_days integer NOT NULL DEFAULT 180,
+      expiry_warning_days integer NOT NULL DEFAULT 90,
+      language text NOT NULL DEFAULT 'en',
+      stock_calculation_mode text NOT NULL DEFAULT 'automatic',
+      last_auto_email_sent text,
+      last_notification_type text,
+      last_notification_channel text,
+      updated_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+    )`,
+    `CREATE TABLE IF NOT EXISTS refresh_tokens (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      user_id integer NOT NULL,
+      token_id text NOT NULL UNIQUE,
+      expires_at integer NOT NULL,
+      rotated_at integer,
+      revoked integer NOT NULL DEFAULT 0,
+      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+    )`,
+    `CREATE TABLE IF NOT EXISTS share_tokens (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      user_id integer NOT NULL,
+      token text NOT NULL UNIQUE,
+      taken_by text NOT NULL,
+      schedule_days integer NOT NULL DEFAULT 30,
+      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      expires_at integer,
+      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+    )`,
+    `CREATE TABLE IF NOT EXISTS dose_tracking (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      user_id integer NOT NULL,
+      dose_id text NOT NULL,
+      taken_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      marked_by text,
+      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+    )`,
+  ];
+}

backend/src/db/schema.ts

@@ -60,6 +60,10 @@ export const userSettings = sqliteTable("user_settings", {
   // Reminder settings
   reminderDaysBefore: integer("reminder_days_before").notNull().default(7),
   repeatDailyReminders: integer("repeat_daily_reminders", { mode: "boolean" }).notNull().default(false),
+  skipRemindersForTakenDoses: integer("skip_reminders_for_taken_doses", { mode: "boolean" }).notNull().default(false),
+  repeatRemindersEnabled: integer("repeat_reminders_enabled", { mode: "boolean" }).notNull().default(false),
+  reminderRepeatIntervalMinutes: integer("reminder_repeat_interval_minutes").notNull().default(30),
+  maxNaggingReminders: integer("max_nagging_reminders").notNull().default(5),
   // Stock thresholds (days)
   lowStockDays: integer("low_stock_days").notNull().default(30),
   normalStockDays: integer("normal_stock_days").notNull().default(90),

backend/src/index.ts

@@ -1,14 +1,14 @@
-import Fastify from "fastify";
+import Fastify, { FastifyInstance } from "fastify";
 import helmet from "@fastify/helmet";
 import cors from "@fastify/cors";
 import rateLimit from "@fastify/rate-limit";
 import sensible from "@fastify/sensible";
-import cookie, { CookieSerializeOptions } from "@fastify/cookie";
+import cookie from "@fastify/cookie";
 import jwt from "@fastify/jwt";
 import fastifyMultipart from "@fastify/multipart";
 import fastifyStatic from "@fastify/static";
 import { resolve } from "path";
-import { existsSync, mkdirSync } from "fs";
+import { existsSync } from "fs";
 import { env } from "./plugins/env.js";
 import { migrationsReady } from "./db/client.js";
 import { healthRoutes } from "./routes/health.js";
@@ -19,18 +19,116 @@ import { settingsRoutes } from "./routes/settings.js";
 import { plannerRoutes } from "./routes/planner.js";
 import { shareRoutes } from "./routes/share.js";
 import { doseRoutes } from "./routes/doses.js";
+import { exportRoutes } from "./routes/export.js";
 import { startReminderScheduler } from "./services/reminder-scheduler.js";
 import { startIntakeReminderScheduler } from "./services/intake-reminder-scheduler.js";
 
+// Re-export utilities from server-config for external use
+export {
+  parseCorsOrigins,
+  buildBaseCookieOptions,
+  buildRefreshCookieOptions,
+  buildAppConfig,
+  ensureImagesDirectory,
+  getJwtConfig,
+} from "./utils/server-config.js";
+
+import {
+  parseCorsOrigins,
+  buildBaseCookieOptions,
+  buildRefreshCookieOptions,
+  buildAppConfig,
+  ensureImagesDirectory,
+  getJwtConfig,
+} from "./utils/server-config.js";
+
+/** Create and configure Fastify app (without starting) */
+export async function createApp(options?: {
+  logLevel?: string;
+  corsOrigins?: string[];
+  authEnabled?: boolean;
+  jwtSecret?: string;
+  refreshSecret?: string;
+  cookieSecret?: string;
+  accessTtlMinutes?: number;
+  refreshTtlDays?: number;
+  isProduction?: boolean;
+  imagesDir?: string;
+}): Promise<FastifyInstance> {
+  const opts = {
+    logLevel: options?.logLevel ?? "info",
+    corsOrigins: options?.corsOrigins ?? ["http://localhost:5173"],
+    authEnabled: options?.authEnabled ?? false,
+    jwtSecret: options?.jwtSecret,
+    refreshSecret: options?.refreshSecret,
+    cookieSecret: options?.cookieSecret ?? "dev-cookie-secret",
+    accessTtlMinutes: options?.accessTtlMinutes ?? 15,
+    refreshTtlDays: options?.refreshTtlDays ?? 7,
+    isProduction: options?.isProduction ?? false,
+    imagesDir: options?.imagesDir ?? resolve(process.cwd(), "data/images"),
+  };
+
+  const app = Fastify({
+    logger: { level: opts.logLevel },
+  });
+
+  // Build config
+  const appConfig = buildAppConfig({
+    jwtSecret: opts.jwtSecret,
+    refreshSecret: opts.refreshSecret,
+    accessTtlMinutes: opts.accessTtlMinutes,
+    refreshTtlDays: opts.refreshTtlDays,
+    isProduction: opts.isProduction,
+  });
+
+  app.decorate("config", appConfig);
+
+  // Register plugins
+  await app.register(sensible);
+  await app.register(helmet);
+  await app.register(cors, { origin: opts.corsOrigins, credentials: true });
+  await app.register(rateLimit, { max: 100, timeWindow: "1 minute" });
+  await app.register(cookie, { secret: opts.cookieSecret });
+
+  // JWT plugin
+  const jwtConfig = getJwtConfig(opts.authEnabled, opts.jwtSecret);
+  await app.register(jwt, jwtConfig);
+
+  await app.register(fastifyMultipart, { limits: { fileSize: 10 * 1024 * 1024 } });
+  
+  // Only register static if directory exists
+  if (existsSync(opts.imagesDir)) {
+    await app.register(fastifyStatic, {
+      root: opts.imagesDir,
+      prefix: "/images/",
+      decorateReply: false,
+    });
+  }
+
+  // Register routes
+  await app.register(healthRoutes);
+  await app.register(authRoutes);
+  await app.register(oidcRoutes);
+  await app.register(medicationRoutes);
+  await app.register(settingsRoutes);
+  await app.register(plannerRoutes);
+  await app.register(shareRoutes);
+  await app.register(doseRoutes);
+  await app.register(exportRoutes);
+
+  return app;
+}
+
+// =============================================================================
+// Server initialization (runs on import)
+// =============================================================================
+
 // Wait for database migrations before anything else
 await migrationsReady;
 console.log("[DB] Migrations complete, starting server...");
 
 // Ensure images directory exists
-const imagesDir = resolve(process.cwd(), "data/images");
-if (!existsSync(imagesDir)) {
-  mkdirSync(imagesDir, { recursive: true });
-}
+const imagesDir = ensureImagesDirectory();
 
 const app = Fastify({
   logger: {
@@ -38,24 +136,14 @@ const app = Fastify({
   },
 });
 
-const origins = env.CORS_ORIGINS.split(",").map((o) => o.trim()).filter(Boolean);
+const origins = parseCorsOrigins(env.CORS_ORIGINS);
 
 // Auth token TTLs (hardcoded - no need for user configuration)
 const accessTtlMinutes = env.ACCESS_TOKEN_TTL_MINUTES;  // Access token TTL
 const refreshTtlDays = env.REFRESH_TOKEN_TTL_DAYS;      // Refresh token TTL
 
-const baseCookieOptions: CookieSerializeOptions = {
-  httpOnly: true,
-  sameSite: "lax",
-  secure: env.NODE_ENV === "production",
-  path: "/",
-  maxAge: accessTtlMinutes * 60,
-};
-
-const refreshCookieOptions: CookieSerializeOptions = {
-  ...baseCookieOptions,
-  maxAge: refreshTtlDays * 24 * 60 * 60,
-};
+const baseCookieOptions = buildBaseCookieOptions(accessTtlMinutes, env.NODE_ENV === "production");
+const refreshCookieOptions = buildRefreshCookieOptions(baseCookieOptions, refreshTtlDays);
 
 // Config decorator - only include secrets if auth is enabled
 app.decorate("config", {
@@ -77,18 +165,8 @@ await app.register(rateLimit, {
 await app.register(cookie, { secret: env.COOKIE_SECRET ?? "dev-cookie-secret" });
 
 // JWT plugin - only register with valid secret if auth is enabled
-if (env.AUTH_ENABLED && env.JWT_SECRET) {
-  await app.register(jwt, { 
-    secret: env.JWT_SECRET, 
-    cookie: { cookieName: "access_token", signed: false } 
-  });
-} else {
-  // Dummy JWT for when auth is disabled - prevents errors
-  await app.register(jwt, { 
-    secret: "auth-disabled-no-secret-needed", 
-    cookie: { cookieName: "access_token", signed: false } 
-  });
-}
+const jwtConfig = getJwtConfig(env.AUTH_ENABLED, env.JWT_SECRET);
+await app.register(jwt, jwtConfig);
 
 await app.register(fastifyMultipart, { limits: { fileSize: 10 * 1024 * 1024 } }); // 10MB limit
 await app.register(fastifyStatic, {
@@ -105,6 +183,7 @@ await app.register(settingsRoutes);
 await app.register(plannerRoutes);
 await app.register(shareRoutes);
 await app.register(doseRoutes);
+await app.register(exportRoutes);
 
 const start = async () => {
   try {

backend/src/routes/auth.ts

@@ -20,6 +20,33 @@ const ARGON2_OPTIONS: argon2.Options = {
   hashLength: 32,              // 256-bit hash
 };
 
+// =============================================================================
+// Rate Limiting Configuration for Auth Routes
+// =============================================================================
+// Stricter rate limits for authentication endpoints to prevent brute-force attacks
+// Note: Rate limiting is implemented via @fastify/rate-limit plugin registered in index.ts
+// and route-specific limits are applied via the 'config.rateLimit' option below.
+// CodeQL may not recognize this pattern - see: https://github.com/github/codeql/issues
+// lgtm[js/missing-rate-limiting]
+const authRateLimitConfig = {
+  max: 10,                     // 10 requests
+  timeWindow: "1 minute",      // per minute
+  errorResponseBuilder: () => ({
+    error: "Too many requests. Please try again later.",
+    code: "RATE_LIMIT_EXCEEDED",
+  }),
+};
+
+// lgtm[js/missing-rate-limiting]
+const sensitiveRateLimitConfig = {
+  max: 5,                      // 5 requests  
+  timeWindow: "15 minutes",    // per 15 minutes (for login/register)
+  errorResponseBuilder: () => ({
+    error: "Too many attempts. Please try again later.",
+    code: "RATE_LIMIT_EXCEEDED",
+  }),
+};
+
 // =============================================================================
 // Validation Schemas
 // =============================================================================
@@ -65,7 +92,9 @@ export async function authRoutes(app: FastifyInstance) {
   // ---------------------------------------------------------------------------
   // POST /auth/register - User registration
   // ---------------------------------------------------------------------------
-  app.post<{ Body: z.infer<typeof registerSchema> }>("/auth/register", async (request, reply) => {
+  app.post<{ Body: z.infer<typeof registerSchema> }>("/auth/register", {
+    config: { rateLimit: sensitiveRateLimitConfig },
+  }, async (request, reply) => {
     // Check auth state
     const state = await getAuthState();
     
@@ -123,7 +152,9 @@ export async function authRoutes(app: FastifyInstance) {
   // ---------------------------------------------------------------------------
   // POST /auth/login - User login
   // ---------------------------------------------------------------------------
-  app.post<{ Body: z.infer<typeof loginSchema> }>("/auth/login", async (request, reply) => {
+  app.post<{ Body: z.infer<typeof loginSchema> }>("/auth/login", {
+    config: { rateLimit: sensitiveRateLimitConfig },
+  }, async (request, reply) => {
     const state = await getAuthState();
     
     if (!state.authEnabled) {
@@ -223,7 +254,9 @@ export async function authRoutes(app: FastifyInstance) {
   // ---------------------------------------------------------------------------
   // POST /auth/refresh - Refresh access token
   // ---------------------------------------------------------------------------
-  app.post("/auth/refresh", async (request, reply) => {
+  app.post("/auth/refresh", {
+    config: { rateLimit: authRateLimitConfig },
+  }, async (request, reply) => {
     const refreshTokenCookie = request.cookies.refresh_token;
     if (!refreshTokenCookie) {
       return reply.status(401).send({ error: "No refresh token", code: "NO_REFRESH_TOKEN" });
@@ -288,7 +321,9 @@ export async function authRoutes(app: FastifyInstance) {
   // ---------------------------------------------------------------------------
   // POST /auth/logout - Logout (revoke refresh token)
   // ---------------------------------------------------------------------------
-  app.post("/auth/logout", async (request, reply) => {
+  app.post("/auth/logout", {
+    config: { rateLimit: authRateLimitConfig },
+  }, async (request, reply) => {
     const refreshTokenCookie = request.cookies.refresh_token;
     
     if (refreshTokenCookie) {
@@ -340,7 +375,10 @@ export async function authRoutes(app: FastifyInstance) {
   // ---------------------------------------------------------------------------
   // PUT /auth/me - Update current user profile
   // ---------------------------------------------------------------------------
-  app.put<{ Body: z.infer<typeof updateProfileSchema> }>("/auth/me", { preHandler: requireAuth }, async (request, reply) => {
+  app.put<{ Body: z.infer<typeof updateProfileSchema> }>("/auth/me", { 
+    preHandler: requireAuth,
+    config: { rateLimit: authRateLimitConfig },
+  }, async (request, reply) => {
     const authUser = request.user as unknown as AuthUser | null;
     if (!authUser) {
       return reply.status(401).send({ error: "Not authenticated" });
@@ -391,7 +429,10 @@ export async function authRoutes(app: FastifyInstance) {
   // ---------------------------------------------------------------------------
   // POST /auth/avatar - Upload user avatar
   // ---------------------------------------------------------------------------
-  app.post("/auth/avatar", { preHandler: requireAuth }, async (request, reply) => {
+  app.post("/auth/avatar", { 
+    preHandler: requireAuth,
+    config: { rateLimit: authRateLimitConfig },
+  }, async (request, reply) => {
     const authUser = request.user as unknown as AuthUser | null;
     if (!authUser) {
       return reply.status(401).send({ error: "Not authenticated" });
@@ -440,7 +481,10 @@ export async function authRoutes(app: FastifyInstance) {
   // ---------------------------------------------------------------------------
   // DELETE /auth/avatar - Delete user avatar
   // ---------------------------------------------------------------------------
-  app.delete("/auth/avatar", { preHandler: requireAuth }, async (request, reply) => {
+  app.delete("/auth/avatar", { 
+    preHandler: requireAuth,
+    config: { rateLimit: authRateLimitConfig },
+  }, async (request, reply) => {
     const authUser = request.user as unknown as AuthUser | null;
     if (!authUser) {
       return reply.status(401).send({ error: "Not authenticated" });

backend/src/routes/export.ts

@@ -0,0 +1,499 @@
+import { FastifyInstance } from "fastify";
+import { z } from "zod";
+import { randomBytes } from "crypto";
+import { db } from "../db/client.js";
+import { medications, userSettings, doseTracking, shareTokens } from "../db/schema.js";
+import { eq } from "drizzle-orm";
+import { requireAuth, getAnonymousUserId } from "../plugins/auth.js";
+import { env } from "../plugins/env.js";
+import type { AuthUser } from "../types/fastify.js";
+import { resolve, extname } from "path";
+import { existsSync, readFileSync, writeFileSync, unlinkSync, mkdirSync } from "fs";
+
+const IMAGES_DIR = resolve(process.cwd(), "data/images");
+
+// =============================================================================
+// Export Format Version (bump this when format changes)
+// =============================================================================
+const EXPORT_VERSION = "1.0";
+
+// =============================================================================
+// Zod Schemas for Import Validation
+// =============================================================================
+
+const scheduleSchema = z.object({
+  usage: z.number().nonnegative(),
+  every: z.number().int().min(1),
+  start: z.string(), // ISO datetime string
+  remind: z.boolean().optional().default(false),
+});
+
+const inventorySchema = z.object({
+  packCount: z.number().int().min(0).default(1),
+  blistersPerPack: z.number().int().min(1).default(1),
+  pillsPerBlister: z.number().int().min(1).default(1),
+  looseTablets: z.number().int().min(0).default(0),
+});
+
+const medicationExportSchema = z.object({
+  _exportId: z.string(),
+  name: z.string().min(1),
+  genericName: z.string().nullable().optional(),
+  takenBy: z.array(z.string()).default([]),
+  inventory: inventorySchema,
+  pillWeightMg: z.number().int().nullable().optional(),
+  schedules: z.array(scheduleSchema).default([]),
+  expiryDate: z.string().nullable().optional(),
+  notes: z.string().nullable().optional(),
+  intakeRemindersEnabled: z.boolean().default(false),
+  image: z.string().nullable().optional(), // base64 data URL or null
+});
+
+const doseHistorySchema = z.object({
+  medicationRef: z.string(), // References _exportId
+  scheduleIndex: z.number().int().min(0),
+  scheduledTime: z.string(), // ISO datetime
+  takenAt: z.string(), // ISO datetime
+  markedBy: z.string().nullable().optional(),
+});
+
+const shareLinkSchema = z.object({
+  takenBy: z.string().min(1),
+  scheduleDays: z.number().int().min(1).default(30),
+  expiresAt: z.string().nullable().optional(), // ISO datetime
+  regenerateToken: z.boolean().default(true),
+});
+
+const settingsExportSchema = z.object({
+  // Email notifications
+  emailEnabled: z.boolean().default(false),
+  notificationEmail: z.string().nullable().optional(),
+  emailStockReminders: z.boolean().default(true),
+  emailIntakeReminders: z.boolean().default(true),
+  // Push notifications
+  shoutrrrEnabled: z.boolean().optional(),
+  shoutrrrUrl: z.string().nullable().optional(),
+  shoutrrrStockReminders: z.boolean().default(true),
+  shoutrrrIntakeReminders: z.boolean().default(true),
+  // Reminder settings
+  reminderDaysBefore: z.number().int().default(7),
+  repeatDailyReminders: z.boolean().default(false),
+  skipRemindersForTakenDoses: z.boolean().default(false),
+  repeatRemindersEnabled: z.boolean().default(false),
+  reminderRepeatIntervalMinutes: z.number().int().default(30),
+  maxNaggingReminders: z.number().int().default(5),
+  // Stock thresholds
+  lowStockDays: z.number().int().default(30),
+  normalStockDays: z.number().int().default(90),
+  highStockDays: z.number().int().default(180),
+  // UI preferences
+  language: z.string().default("en"),
+  stockCalculationMode: z.enum(["automatic", "manual"]).default("automatic"),
+}).optional();
+
+const importDataSchema = z.object({
+  version: z.string(),
+  exportedAt: z.string(),
+  includeSensitiveData: z.boolean().default(false),
+  medications: z.array(medicationExportSchema).default([]),
+  doseHistory: z.array(doseHistorySchema).default([]),
+  settings: settingsExportSchema,
+  shareLinks: z.array(shareLinkSchema).default([]),
+});
+
+// =============================================================================
+// Helper Functions
+// =============================================================================
+
+// Helper to get user ID from request
+async function getUserId(request: any, reply: any): Promise<number> {
+  if (!env.AUTH_ENABLED) {
+    return getAnonymousUserId();
+  }
+  
+  const authUser = request.user as unknown as AuthUser | null;
+  if (!authUser) {
+    reply.status(401).send({ error: "Not authenticated" });
+    throw new Error("AUTH_REQUIRED");
+  }
+  return authUser.id;
+}
+
+// Parse takenByJson safely
+function parseTakenByJson(takenByJson: string | null | undefined): string[] {
+  if (!takenByJson) return [];
+  try {
+    const parsed = JSON.parse(takenByJson);
+    return Array.isArray(parsed) ? parsed.filter((s: unknown) => typeof s === "string" && s.trim()) : [];
+  } catch {
+    return [];
+  }
+}
+
+// Parse blisters from DB format to export format
+function parseBlistersForExport(row: typeof medications.$inferSelect): Array<{ usage: number; every: number; start: string; remind: boolean }> {
+  try {
+    const usage = JSON.parse(row.usageJson || "[]") as number[];
+    const every = JSON.parse(row.everyJson || "[]") as number[];
+    const start = JSON.parse(row.startJson || "[]") as string[];
+    const len = Math.min(usage.length, every.length, start.length);
+    const schedules: Array<{ usage: number; every: number; start: string; remind: boolean }> = [];
+    for (let i = 0; i < len; i++) {
+      schedules.push({
+        usage: usage[i],
+        every: every[i],
+        start: start[i],
+        remind: row.intakeRemindersEnabled ?? false,
+      });
+    }
+    return schedules;
+  } catch {
+    return [];
+  }
+}
+
+// Read image file and convert to base64 data URL
+function imageToBase64(imageUrl: string | null): string | null {
+  if (!imageUrl) return null;
+  const imagePath = resolve(IMAGES_DIR, imageUrl);
+  if (!existsSync(imagePath)) return null;
+  
+  try {
+    const imageBuffer = readFileSync(imagePath);
+    const ext = extname(imageUrl).toLowerCase();
+    const mimeTypes: Record<string, string> = {
+      ".jpg": "image/jpeg",
+      ".jpeg": "image/jpeg",
+      ".png": "image/png",
+      ".webp": "image/webp",
+      ".gif": "image/gif",
+    };
+    const mimeType = mimeTypes[ext] || "image/jpeg";
+    return `data:${mimeType};base64,${imageBuffer.toString("base64")}`;
+  } catch {
+    return null;
+  }
+}
+
+// Save base64 image to file and return filename
+function base64ToImage(base64: string, medicationId: number): string | null {
+  if (!base64 || !base64.startsWith("data:")) return null;
+  
+  try {
+    // Parse data URL: "data:image/jpeg;base64,/9j/4AAQ..."
+    const matches = base64.match(/^data:image\/(\w+);base64,(.+)$/);
+    if (!matches) return null;
+    
+    const ext = matches[1] === "jpeg" ? "jpg" : matches[1];
+    const data = matches[2];
+    const buffer = Buffer.from(data, "base64");
+    
+    const filename = `med-${medicationId}-${Date.now()}.${ext}`;
+    const filepath = resolve(IMAGES_DIR, filename);
+    
+    // Ensure images directory exists
+    if (!existsSync(IMAGES_DIR)) {
+      mkdirSync(IMAGES_DIR, { recursive: true });
+    }
+    
+    writeFileSync(filepath, buffer);
+    return filename;
+  } catch {
+    return null;
+  }
+}
+
+// Parse dose ID to extract medication ID and timestamp
+// Format: "{medicationId}-{blisterIndex}-{timestampMs}"
+function parseDoseId(doseId: string): { medicationId: number; blisterIndex: number; timestampMs: number } | null {
+  const parts = doseId.split("-");
+  if (parts.length < 3) return null;
+  
+  const medicationId = parseInt(parts[0], 10);
+  const blisterIndex = parseInt(parts[1], 10);
+  const timestampMs = parseInt(parts[2], 10);
+  
+  if (isNaN(medicationId) || isNaN(blisterIndex) || isNaN(timestampMs)) return null;
+  
+  return { medicationId, blisterIndex, timestampMs };
+}
+
+// Build dose ID from parts
+function buildDoseId(medicationId: number, blisterIndex: number, timestampMs: number): string {
+  return `${medicationId}-${blisterIndex}-${timestampMs}`;
+}
+
+// =============================================================================
+// Export Routes
+// =============================================================================
+export async function exportRoutes(app: FastifyInstance) {
+  // All export routes require auth
+  app.addHook("preHandler", requireAuth);
+
+  // ---------------------------------------------------------------------------
+  // GET /export - Export all user data
+  // ---------------------------------------------------------------------------
+  app.get<{ Querystring: { includeSensitive?: string } }>(
+    "/export",
+    async (request, reply) => {
+      const userId = await getUserId(request, reply);
+      const includeSensitive = request.query.includeSensitive === "true";
+
+      // 1. Load all medications
+      const meds = await db.select().from(medications).where(eq(medications.userId, userId)).orderBy(medications.id);
+      
+      // Build medication ID to export ID mapping
+      const medIdToExportId = new Map<number, string>();
+      const exportMedications = meds.map((med, index) => {
+        const exportId = `med-${index + 1}`;
+        medIdToExportId.set(med.id, exportId);
+        
+        return {
+          _exportId: exportId,
+          name: med.name,
+          genericName: med.genericName,
+          takenBy: parseTakenByJson(med.takenByJson),
+          inventory: {
+            packCount: med.packCount ?? 1,
+            blistersPerPack: med.blistersPerPack ?? 1,
+            pillsPerBlister: med.pillsPerBlister ?? 1,
+            looseTablets: med.looseTablets ?? 0,
+          },
+          pillWeightMg: med.pillWeightMg,
+          schedules: parseBlistersForExport(med),
+          expiryDate: med.expiryDate,
+          notes: med.notes,
+          intakeRemindersEnabled: med.intakeRemindersEnabled ?? false,
+          image: imageToBase64(med.imageUrl),
+        };
+      });
+
+      // 2. Load all dose tracking entries
+      const doses = await db.select().from(doseTracking).where(eq(doseTracking.userId, userId));
+      
+      const exportDoseHistory = doses.map((dose) => {
+        const parsed = parseDoseId(dose.doseId);
+        if (!parsed) return null;
+        
+        const exportId = medIdToExportId.get(parsed.medicationId);
+        if (!exportId) return null; // Orphaned dose, skip
+        
+        return {
+          medicationRef: exportId,
+          scheduleIndex: parsed.blisterIndex,
+          scheduledTime: new Date(parsed.timestampMs).toISOString(),
+          takenAt: dose.takenAt?.toISOString() ?? new Date().toISOString(),
+          markedBy: dose.markedBy,
+        };
+      }).filter((d): d is NonNullable<typeof d> => d !== null);
+
+      // 3. Load user settings
+      const [settings] = await db.select().from(userSettings).where(eq(userSettings.userId, userId));
+      
+      const exportSettings = settings ? {
+        emailEnabled: settings.emailEnabled,
+        notificationEmail: settings.notificationEmail,
+        emailStockReminders: settings.emailStockReminders,
+        emailIntakeReminders: settings.emailIntakeReminders,
+        // Only include sensitive data if requested
+        shoutrrrEnabled: includeSensitive ? settings.shoutrrrEnabled : undefined,
+        shoutrrrUrl: includeSensitive ? settings.shoutrrrUrl : undefined,
+        shoutrrrStockReminders: settings.shoutrrrStockReminders,
+        shoutrrrIntakeReminders: settings.shoutrrrIntakeReminders,
+        reminderDaysBefore: settings.reminderDaysBefore,
+        repeatDailyReminders: settings.repeatDailyReminders,
+        skipRemindersForTakenDoses: settings.skipRemindersForTakenDoses,
+        repeatRemindersEnabled: settings.repeatRemindersEnabled,
+        reminderRepeatIntervalMinutes: settings.reminderRepeatIntervalMinutes,
+        maxNaggingReminders: settings.maxNaggingReminders,
+        lowStockDays: settings.lowStockDays,
+        normalStockDays: settings.normalStockDays,
+        highStockDays: settings.highStockDays,
+        language: settings.language,
+        stockCalculationMode: settings.stockCalculationMode,
+      } : undefined;
+
+      // 4. Load share links
+      const shares = await db.select().from(shareTokens).where(eq(shareTokens.userId, userId));
+      
+      const exportShareLinks = shares.map((share) => ({
+        takenBy: share.takenBy,
+        scheduleDays: share.scheduleDays,
+        expiresAt: share.expiresAt?.toISOString() ?? null,
+        regenerateToken: true, // Always regenerate tokens on import for security
+      }));
+
+      // Build export object
+      const exportData = {
+        version: EXPORT_VERSION,
+        exportedAt: new Date().toISOString(),
+        includeSensitiveData: includeSensitive,
+        medications: exportMedications,
+        doseHistory: exportDoseHistory,
+        settings: exportSettings,
+        shareLinks: exportShareLinks,
+      };
+
+      // Set download headers
+      const filename = `medassist-export-${new Date().toISOString().split("T")[0]}.json`;
+      reply.header("Content-Type", "application/json");
+      reply.header("Content-Disposition", `attachment; filename="${filename}"`);
+      
+      return exportData;
+    }
+  );
+
+  // ---------------------------------------------------------------------------
+  // POST /import - Import user data (replaces all existing data!)
+  // ---------------------------------------------------------------------------
+  app.post(
+    "/import",
+    async (request, reply) => {
+      const userId = await getUserId(request, reply);
+
+      // 1. Parse and validate import data
+      const parsed = importDataSchema.safeParse(request.body);
+      if (!parsed.success) {
+        return reply.status(400).send({
+          error: "Invalid import data format",
+          details: parsed.error.format(),
+        });
+      }
+
+      const importData = parsed.data;
+
+      // 2. Delete all existing user data (in correct order to respect foreign keys)
+      // Note: CASCADE delete should handle this, but let's be explicit
+      
+      // First, delete images for existing medications
+      const existingMeds = await db.select().from(medications).where(eq(medications.userId, userId));
+      for (const med of existingMeds) {
+        if (med.imageUrl) {
+          const imagePath = resolve(IMAGES_DIR, med.imageUrl);
+          if (existsSync(imagePath)) {
+            try { unlinkSync(imagePath); } catch { /* ignore */ }
+          }
+        }
+      }
+
+      // Delete in order: doses, share tokens, medications, settings
+      await db.delete(doseTracking).where(eq(doseTracking.userId, userId));
+      await db.delete(shareTokens).where(eq(shareTokens.userId, userId));
+      await db.delete(medications).where(eq(medications.userId, userId));
+      await db.delete(userSettings).where(eq(userSettings.userId, userId));
+
+      // 3. Import medications and build ID mapping
+      const exportIdToNewId = new Map<string, number>();
+      
+      for (const med of importData.medications) {
+        // Convert schedules back to JSON arrays
+        const usageJson = JSON.stringify(med.schedules.map((s) => s.usage));
+        const everyJson = JSON.stringify(med.schedules.map((s) => s.every));
+        const startJson = JSON.stringify(med.schedules.map((s) => s.start));
+        const takenByJson = JSON.stringify(med.takenBy);
+        
+        // Check if any schedule has remind enabled
+        const intakeRemindersEnabled = med.schedules.some((s) => s.remind) || med.intakeRemindersEnabled;
+
+        const [inserted] = await db.insert(medications).values({
+          userId,
+          name: med.name,
+          genericName: med.genericName || null,
+          takenByJson,
+          packCount: med.inventory.packCount,
+          blistersPerPack: med.inventory.blistersPerPack,
+          pillsPerBlister: med.inventory.pillsPerBlister,
+          looseTablets: med.inventory.looseTablets,
+          pillWeightMg: med.pillWeightMg || null,
+          usageJson,
+          everyJson,
+          startJson,
+          expiryDate: med.expiryDate || null,
+          notes: med.notes || null,
+          intakeRemindersEnabled,
+          imageUrl: null, // Will be set after image is saved
+        }).returning();
+
+        // Save mapping
+        exportIdToNewId.set(med._exportId, inserted.id);
+
+        // Save image if present
+        if (med.image) {
+          const imageUrl = base64ToImage(med.image, inserted.id);
+          if (imageUrl) {
+            await db.update(medications)
+              .set({ imageUrl })
+              .where(eq(medications.id, inserted.id));
+          }
+        }
+      }
+
+      // 4. Import dose history with remapped medication IDs
+      for (const dose of importData.doseHistory) {
+        const newMedId = exportIdToNewId.get(dose.medicationRef);
+        if (!newMedId) continue; // Skip orphaned doses
+        
+        // Convert ISO timestamp back to milliseconds for dose ID
+        const timestampMs = new Date(dose.scheduledTime).getTime();
+        const doseId = buildDoseId(newMedId, dose.scheduleIndex, timestampMs);
+        
+        await db.insert(doseTracking).values({
+          userId,
+          doseId,
+          takenAt: new Date(dose.takenAt),
+          markedBy: dose.markedBy || null,
+        });
+      }
+
+      // 5. Import settings
+      if (importData.settings) {
+        await db.insert(userSettings).values({
+          userId,
+          emailEnabled: importData.settings.emailEnabled ?? false,
+          notificationEmail: importData.settings.notificationEmail || null,
+          emailStockReminders: importData.settings.emailStockReminders ?? true,
+          emailIntakeReminders: importData.settings.emailIntakeReminders ?? true,
+          shoutrrrEnabled: importData.settings.shoutrrrEnabled ?? false,
+          shoutrrrUrl: importData.settings.shoutrrrUrl || null,
+          shoutrrrStockReminders: importData.settings.shoutrrrStockReminders ?? true,
+          shoutrrrIntakeReminders: importData.settings.shoutrrrIntakeReminders ?? true,
+          reminderDaysBefore: importData.settings.reminderDaysBefore ?? 7,
+          repeatDailyReminders: importData.settings.repeatDailyReminders ?? false,
+          skipRemindersForTakenDoses: importData.settings.skipRemindersForTakenDoses ?? false,
+          repeatRemindersEnabled: importData.settings.repeatRemindersEnabled ?? false,
+          reminderRepeatIntervalMinutes: importData.settings.reminderRepeatIntervalMinutes ?? 30,
+          maxNaggingReminders: importData.settings.maxNaggingReminders ?? 5,
+          lowStockDays: importData.settings.lowStockDays ?? 30,
+          normalStockDays: importData.settings.normalStockDays ?? 90,
+          highStockDays: importData.settings.highStockDays ?? 180,
+          language: importData.settings.language ?? "en",
+          stockCalculationMode: importData.settings.stockCalculationMode ?? "automatic",
+        });
+      }
+
+      // 6. Import share links (with new tokens)
+      for (const share of importData.shareLinks) {
+        // Always generate new token for security
+        const token = randomBytes(8).toString("hex");
+        
+        await db.insert(shareTokens).values({
+          userId,
+          token,
+          takenBy: share.takenBy,
+          scheduleDays: share.scheduleDays,
+          expiresAt: share.expiresAt ? new Date(share.expiresAt) : null,
+        });
+      }
+
+      return {
+        success: true,
+        imported: {
+          medications: importData.medications.length,
+          doseHistory: importData.doseHistory.length,
+          settings: importData.settings ? 1 : 0,
+          shareLinks: importData.shareLinks.length,
+        },
+      };
+    }
+  );
+}

backend/src/routes/health.ts

@@ -1,5 +1,9 @@
 import { FastifyInstance } from "fastify";
 
 export async function healthRoutes(app: FastifyInstance) {
-  app.get("/health", async () => ({ status: "ok" }));
+  app.get("/health", async () => ({
+    status: "ok",
+    smtpConfigured: Boolean(process.env.SMTP_HOST),
+    shoutrrrConfigured: Boolean(process.env.SHOUTRRR_URL),
+  }));
 }

backend/src/routes/medications.ts

@@ -353,7 +353,7 @@ export async function medicationRoutes(app: FastifyInstance) {
       });
       
       const currentPills = Math.max(0, originalTotalPills - consumedUntilNow);
-      const stripsNeeded = pillsPerBlister > 0 ? Math.ceil(usageTotal / pillsPerBlister) : 0;
+      const blistersNeeded = pillsPerBlister > 0 ? Math.ceil(usageTotal / pillsPerBlister) : 0;
       
       // Calculate current stock using realistic consumption order (loose first, then blisters)
       const consumed = originalTotalPills - currentPills;
@@ -373,8 +373,8 @@ export async function medicationRoutes(app: FastifyInstance) {
         medicationName: row.name,
         totalPills: currentPills,
         plannerUsage: usageTotal,
-        stripSize: pillsPerBlister,
-        stripsNeeded,
+        blisterSize: pillsPerBlister,
+        blistersNeeded,
         fullBlisters,
         loosePills,
         enough,

backend/src/routes/planner.ts

@@ -7,14 +7,27 @@ import type { AuthUser } from "../types/fastify.js";
 import { requireAuth, getAnonymousUserId } from "../plugins/auth.js";
 import { env } from "../plugins/env.js";
 
+// Escape HTML to prevent XSS in email templates
+function escapeHtml(text: string): string {
+  const htmlEscapes: Record<string, string> = {
+    '&': '&amp;',
+    '<': '&lt;',
+    '>': '&gt;',
+    '"': '&quot;',
+    "'": '&#39;',
+  };
+  return text.replace(/[&<>"']/g, char => htmlEscapes[char] || char);
+}
+
 type PlannerRow = {
   medicationId: number;
   medicationName: string;
   totalPills: number;
   plannerUsage: number;
-  stripSize: number;
-  stripsNeeded: number;
-  stripsAvailable: number;
+  blisterSize: number;
+  blistersNeeded: number;
+  fullBlisters: number;
+  loosePills: number;
   enough: boolean;
 };
 
@@ -99,11 +112,11 @@ export async function plannerRoutes(app: FastifyInstance) {
       .map(
         (row) => `
         <tr>
-          <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; white-space: nowrap;">${row.medicationName}</td>
+          <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; white-space: nowrap;">${escapeHtml(row.medicationName)}</td>
           <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; text-align: center; white-space: nowrap;"><strong>${row.totalPills}</strong></td>
           <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; text-align: center; white-space: nowrap;"><strong>${row.plannerUsage}</strong></td>
-          <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; text-align: center; white-space: nowrap;">${row.stripsNeeded} × ${row.stripSize}</td>
-          <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; text-align: center; white-space: nowrap;">${row.stripsAvailable}</td>
+          <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; text-align: center; white-space: nowrap;">${row.blistersNeeded} × ${row.blisterSize}</td>
+          <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; text-align: center; white-space: nowrap;">${row.fullBlisters}${row.loosePills > 0 ? ` (+${row.loosePills})` : ""}</td>
           <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; text-align: center; white-space: nowrap;">
             <span style="display: inline-block; padding: 4px 10px; border-radius: 12px; font-size: 12px; font-weight: 600; ${
               row.enough
@@ -169,7 +182,7 @@ Supply overview from ${fromDate} to ${untilDate}
 
 ${summaryText}
 
-${rows.map((r) => `${r.medicationName}: ${r.totalPills} pills in stock, ${r.plannerUsage} pills needed, ${r.stripsAvailable} blisters available (${r.stripsNeeded} needed) - ${r.enough ? "Enough" : "OUT OF STOCK"}`).join("\n")}
+${rows.map((r) => `${r.medicationName}: ${r.totalPills} pills in stock, ${r.plannerUsage} pills needed, ${r.fullBlisters} blisters available${r.loosePills > 0 ? ` (+${r.loosePills} loose)` : ""} (${r.blistersNeeded} needed) - ${r.enough ? "Enough" : "OUT OF STOCK"}`).join("\n")}
 
 ---
 Sent from MedAssist-ng Medication Planner`;
@@ -280,7 +293,7 @@ Sent from MedAssist-ng Medication Planner`;
           const rowBg = isEmpty ? "#fef2f2" : "white";
           return `
           <tr style="background: ${rowBg};">
-            <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; white-space: nowrap;">${statusIcon} ${row.name}</td>
+            <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; white-space: nowrap;">${statusIcon} ${escapeHtml(row.name)}</td>
             <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; text-align: center; white-space: nowrap; ${isEmpty ? "color: #dc2626; font-weight: 600;" : ""}"><strong>${row.medsLeft}</strong></td>
             <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; text-align: center; white-space: nowrap;">${row.daysLeft ?? 0}</td>
             <td style="padding: 10px 12px; border-bottom: 1px solid #e5e7eb; text-align: center; white-space: nowrap;">${isEmpty ? "<strong>NOW</strong>" : (row.depletionDate ?? "-")}</td>

backend/src/routes/settings.ts

@@ -21,6 +21,10 @@ export type UserSettings = {
   shoutrrrIntakeReminders: boolean;
   reminderDaysBefore: number;
   repeatDailyReminders: boolean;
+  skipRemindersForTakenDoses: boolean;
+  repeatRemindersEnabled: boolean;
+  reminderRepeatIntervalMinutes: number;
+  maxNaggingReminders: number;
   lowStockDays: number;
   normalStockDays: number;
   highStockDays: number;
@@ -45,6 +49,10 @@ type SettingsBody = {
   emailIntakeReminders: boolean;
   shoutrrrStockReminders: boolean;
   shoutrrrIntakeReminders: boolean;
+  skipRemindersForTakenDoses: boolean;
+  repeatRemindersEnabled: boolean;
+  reminderRepeatIntervalMinutes: number;
+  maxNaggingReminders: number;
   language: string;
   stockCalculationMode: "automatic" | "manual";
 };
@@ -57,37 +65,58 @@ type TestShoutrrrBody = {
   url: string;
 };
 
-// Default settings for new users
-const defaultSettings = {
-  emailEnabled: false,
-  notificationEmail: null,
-  emailStockReminders: true,
-  emailIntakeReminders: true,
-  shoutrrrEnabled: false,
-  shoutrrrUrl: null,
-  shoutrrrStockReminders: true,
-  shoutrrrIntakeReminders: true,
-  reminderDaysBefore: 7,
-  repeatDailyReminders: false,
-  lowStockDays: 30,
-  normalStockDays: 90,
-  highStockDays: 180,
-  language: "en",
-  stockCalculationMode: "automatic" as const,
-  lastAutoEmailSent: null,
-  lastNotificationType: null,
-  lastNotificationChannel: null,
-};
+// Helper to parse boolean env vars
+function envBool(key: string, defaultVal: boolean): boolean {
+  const val = process.env[key];
+  if (val === undefined) return defaultVal;
+  return val === "true" || val === "1";
+}
+
+// Helper to parse integer env vars
+function envInt(key: string, defaultVal: number): number {
+  const val = process.env[key];
+  if (val === undefined) return defaultVal;
+  const parsed = parseInt(val, 10);
+  return isNaN(parsed) ? defaultVal : parsed;
+}
+
+// Default settings for new users - read from ENV with fallbacks
+function getDefaultSettings() {
+  return {
+    emailEnabled: envBool("DEFAULT_EMAIL_ENABLED", false),
+    notificationEmail: process.env.DEFAULT_NOTIFICATION_EMAIL || null,
+    emailStockReminders: envBool("DEFAULT_EMAIL_STOCK_REMINDERS", true),
+    emailIntakeReminders: envBool("DEFAULT_EMAIL_INTAKE_REMINDERS", true),
+    shoutrrrEnabled: envBool("DEFAULT_SHOUTRRR_ENABLED", false),
+    shoutrrrUrl: process.env.DEFAULT_SHOUTRRR_URL || null,
+    shoutrrrStockReminders: envBool("DEFAULT_SHOUTRRR_STOCK_REMINDERS", true),
+    shoutrrrIntakeReminders: envBool("DEFAULT_SHOUTRRR_INTAKE_REMINDERS", true),
+    reminderDaysBefore: envInt("REMINDER_DAYS_BEFORE", 7),
+    repeatDailyReminders: envBool("DEFAULT_REPEAT_DAILY_REMINDERS", false),
+    skipRemindersForTakenDoses: envBool("DEFAULT_SKIP_REMINDERS_FOR_TAKEN_DOSES", false),
+    repeatRemindersEnabled: envBool("DEFAULT_REPEAT_REMINDERS_ENABLED", false),
+    reminderRepeatIntervalMinutes: envInt("DEFAULT_REMINDER_REPEAT_INTERVAL_MINUTES", 30),
+    maxNaggingReminders: envInt("DEFAULT_MAX_NAGGING_REMINDERS", 5),
+    lowStockDays: envInt("DEFAULT_LOW_STOCK_DAYS", 30),
+    normalStockDays: envInt("DEFAULT_NORMAL_STOCK_DAYS", 90),
+    highStockDays: envInt("DEFAULT_HIGH_STOCK_DAYS", 180),
+    language: (process.env.DEFAULT_LANGUAGE as "en" | "de") || "en",
+    stockCalculationMode: (process.env.DEFAULT_STOCK_CALCULATION_MODE as "automatic" | "manual") || "automatic",
+    lastAutoEmailSent: null,
+    lastNotificationType: null,
+    lastNotificationChannel: null,
+  };
+}
 
 // Helper to get or create user settings
 async function getOrCreateUserSettings(userId: number) {
   let [settings] = await db.select().from(userSettings).where(eq(userSettings.userId, userId));
   
   if (!settings) {
-    // Create default settings for user
+    // Create default settings for user (using ENV defaults)
     [settings] = await db.insert(userSettings).values({
       userId,
-      ...defaultSettings,
+      ...getDefaultSettings(),
     }).returning();
   }
   
@@ -109,6 +138,10 @@ export async function loadUserSettings(userId: number): Promise<UserSettings> {
     shoutrrrIntakeReminders: settings.shoutrrrIntakeReminders,
     reminderDaysBefore: settings.reminderDaysBefore,
     repeatDailyReminders: settings.repeatDailyReminders,
+    skipRemindersForTakenDoses: settings.skipRemindersForTakenDoses ?? false,
+    repeatRemindersEnabled: settings.repeatRemindersEnabled ?? false,
+    reminderRepeatIntervalMinutes: settings.reminderRepeatIntervalMinutes ?? 30,
+    maxNaggingReminders: settings.maxNaggingReminders ?? 5,
     lowStockDays: settings.lowStockDays,
     normalStockDays: settings.normalStockDays,
     highStockDays: settings.highStockDays,
@@ -135,6 +168,10 @@ export async function getAllUserSettings(): Promise<UserSettings[]> {
     shoutrrrIntakeReminders: settings.shoutrrrIntakeReminders,
     reminderDaysBefore: settings.reminderDaysBefore,
     repeatDailyReminders: settings.repeatDailyReminders,
+    skipRemindersForTakenDoses: settings.skipRemindersForTakenDoses ?? false,
+    repeatRemindersEnabled: settings.repeatRemindersEnabled ?? false,
+    reminderRepeatIntervalMinutes: settings.reminderRepeatIntervalMinutes ?? 30,
+    maxNaggingReminders: settings.maxNaggingReminders ?? 5,
     lowStockDays: settings.lowStockDays,
     normalStockDays: settings.normalStockDays,
     highStockDays: settings.highStockDays,
@@ -187,6 +224,10 @@ export async function settingsRoutes(app: FastifyInstance) {
       emailIntakeReminders: settings.emailIntakeReminders,
       shoutrrrStockReminders: settings.shoutrrrStockReminders,
       shoutrrrIntakeReminders: settings.shoutrrrIntakeReminders,
+      skipRemindersForTakenDoses: settings.skipRemindersForTakenDoses,
+      repeatRemindersEnabled: settings.repeatRemindersEnabled ?? false,
+      reminderRepeatIntervalMinutes: settings.reminderRepeatIntervalMinutes ?? 30,
+      maxNaggingReminders: settings.maxNaggingReminders ?? 5,
       language: settings.language,
       stockCalculationMode: settings.stockCalculationMode ?? "automatic",
       // SMTP settings (from .env - shared/server-configured)
@@ -233,6 +274,10 @@ export async function settingsRoutes(app: FastifyInstance) {
       shoutrrrIntakeReminders: body.shoutrrrIntakeReminders ?? true,
       reminderDaysBefore: body.reminderDaysBefore,
       repeatDailyReminders,
+      skipRemindersForTakenDoses: body.skipRemindersForTakenDoses ?? false,
+      repeatRemindersEnabled: body.repeatRemindersEnabled ?? false,
+      reminderRepeatIntervalMinutes: body.reminderRepeatIntervalMinutes ?? 30,
+      maxNaggingReminders: body.maxNaggingReminders ?? 5,
       lowStockDays: body.lowStockDays ?? 30,
       normalStockDays: body.normalStockDays ?? 90,
       highStockDays: body.highStockDays ?? 180,
@@ -327,9 +372,61 @@ export async function settingsRoutes(app: FastifyInstance) {
   });
 }
 
+// Validate URL to prevent SSRF attacks
+function isAllowedNotificationUrl(urlStr: string): { allowed: boolean; error?: string } {
+  try {
+    // Convert ntfy:// to https:// for parsing
+    const normalizedUrl = urlStr.startsWith("ntfy://") 
+      ? urlStr.replace("ntfy://", "https://") 
+      : urlStr;
+    
+    const parsed = new URL(normalizedUrl);
+    
+    // Only allow http and https protocols
+    if (!['http:', 'https:'].includes(parsed.protocol)) {
+      return { allowed: false, error: "Only HTTP/HTTPS protocols are allowed" };
+    }
+    
+    // Block private/internal IP addresses
+    const hostname = parsed.hostname.toLowerCase();
+    
+    // Block localhost
+    if (hostname === 'localhost' || hostname === '127.0.0.1' || hostname === '::1') {
+      return { allowed: false, error: "Localhost URLs are not allowed" };
+    }
+    
+    // Block private IP ranges (basic check)
+    const ipMatch = hostname.match(/^(\d+)\.(\d+)\.(\d+)\.(\d+)$/);
+    if (ipMatch) {
+      const [, a, b] = ipMatch.map(Number);
+      // 10.x.x.x, 172.16-31.x.x, 192.168.x.x, 169.254.x.x (link-local)
+      if (a === 10 || a === 127 || (a === 172 && b >= 16 && b <= 31) || 
+          (a === 192 && b === 168) || (a === 169 && b === 254)) {
+        return { allowed: false, error: "Private IP addresses are not allowed" };
+      }
+    }
+    
+    // Block common internal hostnames
+    if (hostname.endsWith('.local') || hostname.endsWith('.internal') || 
+        hostname.endsWith('.lan') || hostname === 'metadata.google.internal') {
+      return { allowed: false, error: "Internal hostnames are not allowed" };
+    }
+    
+    return { allowed: true };
+  } catch {
+    return { allowed: false, error: "Invalid URL format" };
+  }
+}
+
 // Send notification via Shoutrrr-compatible URL (supports ntfy, Discord, Telegram, etc.)
 export async function sendShoutrrrNotification(urlStr: string, title: string, message: string): Promise<{ success: boolean; error?: string }> {
   try {
+    // Validate URL to prevent SSRF
+    const validation = isAllowedNotificationUrl(urlStr);
+    if (!validation.allowed) {
+      return { success: false, error: validation.error };
+    }
+    
     let targetUrl: string;
     let method = "POST";
     let headers: Record<string, string> = {};

backend/src/services/intake-reminder-scheduler.ts

@@ -1,145 +1,59 @@
 import nodemailer from "nodemailer";
-import { eq } from "drizzle-orm";
+import { eq, and, gte, lte } from "drizzle-orm";
 import { db } from "../db/client.js";
-import { medications } from "../db/schema.js";
+import { medications, doseTracking } from "../db/schema.js";
 import { readFileSync, writeFileSync, existsSync } from "fs";
 import { resolve } from "path";
 import { getAllUserSettings, sendShoutrrrNotification, type UserSettings } from "../routes/settings.js";
 import { getTranslations, t, getDateLocale, type Language } from "../i18n/translations.js";
 import { getReminderState, updateReminderSentTime, updateUserReminderSentTime } from "./reminder-scheduler.js";
 
-type Blister = { usage: number; every: number; start: string };
-
-type IntakeReminderState = {
-  sentReminders: string[]; // Array of "medName:timestamp" to track sent reminders
-};
+// Import shared utilities
+import {
+  getTimezone,
+  parseBlisters,
+  parseTakenByJson,
+  getUpcomingIntakes,
+  getTodaysIntakes,
+  parseIntakeReminderState,
+  createDefaultIntakeReminderState,
+  cleanOldIntakeReminders,
+  type Blister,
+  type IntakeReminderState,
+  type UpcomingIntake,
+} from "../utils/scheduler-utils.js";
 
 const REMINDER_MINUTES_BEFORE = parseInt(process.env.REMINDER_MINUTES_BEFORE ?? "15", 10);
 const CHECK_INTERVAL_MS = 60 * 1000; // Check every 1 minute
 
-// Get current timezone from TZ env variable or default to UTC
-function getTimezone(): string {
-  return process.env.TZ || "UTC";
-}
-
-// Parse takenByJson to array of strings
-function parseTakenByJson(takenByJson: string | null | undefined): string[] {
-  if (!takenByJson) return [];
-  try {
-    const parsed = JSON.parse(takenByJson);
-    return Array.isArray(parsed) ? parsed.filter((s: unknown) => typeof s === "string" && s.trim()) : [];
-  } catch {
-    return [];
-  }
-}
-
 const intakeReminderStateFile = resolve(process.cwd(), "data", "intake-reminder-state.json");
 
 function loadIntakeReminderState(): IntakeReminderState {
   try {
     if (existsSync(intakeReminderStateFile)) {
-      const saved = JSON.parse(readFileSync(intakeReminderStateFile, "utf-8"));
-      return {
-        sentReminders: saved.sentReminders ?? [],
-      };
+      return parseIntakeReminderState(readFileSync(intakeReminderStateFile, "utf-8"));
     }
   } catch {
     // ignore
   }
-  return { sentReminders: [] };
+  return createDefaultIntakeReminderState();
 }
 
 function saveIntakeReminderState(state: IntakeReminderState): void {
   writeFileSync(intakeReminderStateFile, JSON.stringify(state, null, 2));
 }
 
-function parseBlisters(row: { usageJson: string; everyJson: string; startJson: string }): Blister[] {
-  try {
-    const usage = JSON.parse(row.usageJson) as number[];
-    const every = JSON.parse(row.everyJson) as number[];
-    const start = JSON.parse(row.startJson) as string[];
-    const len = Math.min(usage.length, every.length, start.length);
-    const blisters: Blister[] = [];
-    for (let i = 0; i < len; i++) {
-      blisters.push({ usage: usage[i], every: every[i], start: start[i] });
-    }
-    return blisters;
-  } catch {
-    return [];
-  }
+function parseBlistersFromRow(row: { usageJson: string; everyJson: string; startJson: string }): Blister[] {
+  return parseBlisters(row);
 }
 
-type UpcomingIntake = {
-  medName: string;
-  usage: number;
-  intakeTime: Date;
-  intakeTimeStr: string;
-  takenBy: string[]; // Changed to array
-  pillWeightMg: number | null;
-};
-
-function getUpcomingIntakes(medName: string, blisters: Blister[], minutesBefore: number, takenBy: string[], pillWeightMg: number | null, locale: string): UpcomingIntake[] {
-  const now = Date.now();
-  // Window to detect if "now" is the right time to send reminder
-  // We check if the notify time (intake - 15min) falls within current minute ±1
-  const windowStart = now - 2 * 60 * 1000; // 2 minutes ago (catch slightly late checks)
-  const windowEnd = now + 1 * 60 * 1000; // 1 minute from now
-  
-  const upcoming: UpcomingIntake[] = [];
-  
-  for (const blister of blisters) {
-    const startTime = new Date(blister.start).getTime();
-    const intervalMs = blister.every * 24 * 60 * 60 * 1000;
-    
-    if (intervalMs <= 0) continue;
-    
-    // Find the next scheduled intake time (could be today or in the future)
-    let nextTime = startTime;
-    
-    // If start is in the past, calculate occurrences
-    if (nextTime < now) {
-      const elapsed = now - startTime;
-      const intervals = Math.floor(elapsed / intervalMs);
-      
-      // Check the current occurrence (today's scheduled time, even if past)
-      const currentOccurrence = startTime + intervals * intervalMs;
-      // And the next occurrence
-      const nextOccurrence = startTime + (intervals + 1) * intervalMs;
-      
-      // If today's occurrence is within the reminder window, use it
-      // (intake hasn't happened yet, we should remind)
-      const currentNotifyTime = currentOccurrence - minutesBefore * 60 * 1000;
-      if (currentNotifyTime >= windowStart && currentOccurrence > now) {
-        nextTime = currentOccurrence;
-      } else {
-        nextTime = nextOccurrence;
-      }
-    }
-    
-    // Calculate when we should notify for this intake
-    const notifyTime = nextTime - minutesBefore * 60 * 1000;
-    
-    if (notifyTime >= windowStart && notifyTime <= windowEnd) {
-      const intakeDate = new Date(nextTime);
-      upcoming.push({
-        medName,
-        usage: blister.usage,
-        intakeTime: intakeDate,
-        intakeTimeStr: intakeDate.toLocaleTimeString(locale, { 
-          hour: "2-digit", 
-          minute: "2-digit",
-          timeZone: getTimezone()
-        }),
-        takenBy,
-        pillWeightMg,
-      });
-    }
-  }
-  
-  return upcoming;
-}
-
-async function sendIntakeReminderEmail(email: string, intakes: UpcomingIntake[], language: Language): Promise<{ success: boolean; error?: string }> {
+async function sendIntakeReminderEmail(
+  email: string, 
+  intakes: UpcomingIntake[], 
+  language: Language,
+  isRepeat: boolean = false,
+  repeatIntervalMinutes?: number
+): Promise<{ success: boolean; error?: string }> {
   const smtpHost = process.env.SMTP_HOST;
   const smtpUser = process.env.SMTP_USER;
   const smtpPass = process.env.SMTP_TOKEN || process.env.SMTP_PASS; // Token takes precedence
@@ -189,11 +103,16 @@ async function sendIntakeReminderEmail(email: string, intakes: UpcomingIntake[],
     ? tr.intakeReminder.alertSingle 
     : t(tr.intakeReminder.alertMultiple, { count: intakes.length });
 
+  // Different description for repeat reminders
+  const description = isRepeat && repeatIntervalMinutes
+    ? `⚠️ Don't forget your medication! This reminder will be sent every ${repeatIntervalMinutes} minutes until you mark it as taken.`
+    : t(tr.intakeReminder.description, { minutes: REMINDER_MINUTES_BEFORE });
+
   const html = `
     <div style="font-family: system-ui, -apple-system, sans-serif; max-width: 100%; margin: 0 auto; padding: 12px; background: #f9fafb;">
       <div style="background: white; border-radius: 12px; padding: 16px; box-shadow: 0 1px 3px rgba(0,0,0,0.1);">
         <h2 style="color: #1f2937; margin: 0 0 8px; font-size: 18px;">${tr.intakeReminder.title}</h2>
-        <p style="color: #6b7280; margin: 0 0 16px; font-size: 13px;">${t(tr.intakeReminder.description, { minutes: REMINDER_MINUTES_BEFORE })}</p>
+        <p style="color: #6b7280; margin: 0 0 16px; font-size: 13px;">${description}</p>
         
         <div style="padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; background: #eff6ff; border: 1px solid #bfdbfe;">
           <p style="margin: 0; color: #1e40af; font-weight: 500; font-size: 13px;">
@@ -235,7 +154,7 @@ async function sendIntakeReminderEmail(email: string, intakes: UpcomingIntake[],
 
   const plainText = `${tr.intakeReminder.title}
 
-${t(tr.intakeReminder.description, { minutes: REMINDER_MINUTES_BEFORE })}
+${description}
 
 ${intakes.map((i) => {
     const takenByStr = i.takenBy.length > 0 ? ` ${t(tr.intakeReminder.takenBy, { name: i.takenBy.join(", ") })}` : "";
@@ -245,7 +164,9 @@ ${intakes.map((i) => {
 ---
 ${tr.intakeReminder.footer}`;
 
-  const subject = t(tr.intakeReminder.subject, { medications: intakes.map(i => i.medName).join(", ") });
+  const subject = isRepeat
+    ? `[Reminder] ${t(tr.intakeReminder.subject, { medications: intakes.map(i => i.medName).join(", ") })}`
+    : t(tr.intakeReminder.subject, { medications: intakes.map(i => i.medName).join(", ") });
 
   try {
     const transporter = nodemailer.createTransport({
@@ -274,13 +195,18 @@ ${tr.intakeReminder.footer}`;
 }
 
 async function checkAndSendIntakeReminders(logger: { info: (msg: string) => void; error: (msg: string) => void }): Promise<void> {
+  logger.info(`[IntakeReminder] Checking for intake reminders...`);
+  
   // Get all user settings to iterate over each user
   const allUserSettings = await getAllUserSettings();
   
   if (allUserSettings.length === 0) {
+    logger.info(`[IntakeReminder] No users with settings found`);
     return; // No users with settings
   }
 
+  logger.info(`[IntakeReminder] Found ${allUserSettings.length} users to check`);
+  
   for (const userSettings of allUserSettings) {
     await checkAndSendIntakeRemindersForUser(userSettings, logger);
   }
@@ -293,56 +219,190 @@ async function checkAndSendIntakeRemindersForUser(
   const language = settings.language;
   const tr = getTranslations(language);
   
+  logger.info(`[IntakeReminder] Checking user ${settings.userId} - repeat:${settings.repeatRemindersEnabled} skip:${settings.skipRemindersForTakenDoses}`);
+  
   // Check if any intake reminder notifications are enabled (granular check)
   const emailEnabled = settings.emailEnabled && settings.notificationEmail && settings.emailIntakeReminders;
   const shoutrrrEnabled = settings.shoutrrrEnabled && settings.shoutrrrUrl && settings.shoutrrrIntakeReminders;
   
   if (!emailEnabled && !shoutrrrEnabled) {
+    logger.info(`[IntakeReminder] User ${settings.userId}: No intake notifications enabled (email:${emailEnabled}, shoutrrr:${shoutrrrEnabled})`);
     return; // No intake reminder notifications enabled for this user
   }
 
+  logger.info(`[IntakeReminder] User ${settings.userId}: Notifications enabled (email:${emailEnabled}, shoutrrr:${shoutrrrEnabled})`);
+
   // Get all medications with intake reminders enabled for this user
   const rows = await db.select().from(medications).where(eq(medications.userId, settings.userId)).orderBy(medications.id);
   const medsWithReminders = rows.filter(row => row.intakeRemindersEnabled);
   
   if (medsWithReminders.length === 0) {
+    logger.info(`[IntakeReminder] User ${settings.userId}: No medications have reminders enabled`);
     return; // No medications have reminders enabled for this user
   }
 
-  const state = loadIntakeReminderState();
-  const allUpcoming: UpcomingIntake[] = [];
-  const locale = getDateLocale(language);
+  logger.info(`[IntakeReminder] User ${settings.userId}: Found ${medsWithReminders.length} medications with reminders`);
   
-  // Find all upcoming intakes across all medications for this user
+  const state = loadIntakeReminderState();
+  const allUpcoming: (UpcomingIntake & { medicationId: number; blisterIndex: number })[] = [];
+  const locale = getDateLocale(language);
+  const tz = getTimezone();
+  
+  // Get start and end of today in user's timezone (for filtering today's doses only)
+  const now = new Date();
+  const todayStart = new Date(now.toLocaleString("en-US", { timeZone: tz }));
+  todayStart.setHours(0, 0, 0, 0);
+  
+  const todayEnd = new Date(now.toLocaleString("en-US", { timeZone: tz }));
+  todayEnd.setHours(23, 59, 59, 999);
+  
+  logger.info(`[IntakeReminder] User ${settings.userId}: Today range: ${todayStart.toISOString()} to ${todayEnd.toISOString()}`);
+  
+  // Find intakes: upcoming ones in reminder window + past ones for repeat reminders
   for (const med of medsWithReminders) {
-    const blisters = parseBlisters(med);
+    const blisters = parseBlistersFromRow(med);
     const takenByArray = parseTakenByJson(med.takenByJson);
-    const upcoming = getUpcomingIntakes(med.name, blisters, REMINDER_MINUTES_BEFORE, takenByArray, med.pillWeightMg, locale);
-    allUpcoming.push(...upcoming);
+    
+    logger.info(`[IntakeReminder] User ${settings.userId}: Processing medication "${med.name}" with ${blisters.length} blisters`);
+    
+    // Process each blister separately to track blisterIndex
+    blisters.forEach((blister, blisterIndex) => {
+      logger.info(`[IntakeReminder] User ${settings.userId}: Blister ${blisterIndex} - start: ${blister.start}, every: ${blister.every} days, usage: ${blister.usage}`);
+      
+      // Always get upcoming intakes (15 min before) for first reminders
+      const upcomingIntakes = getUpcomingIntakes(med.name, [blister], REMINDER_MINUTES_BEFORE, takenByArray, med.pillWeightMg, locale, tz);
+      logger.info(`[IntakeReminder] User ${settings.userId}: Blister ${blisterIndex} found ${upcomingIntakes.length} upcoming intakes (reminder window)`);
+      
+      // Add upcoming intakes for first reminders
+      allUpcoming.push(...upcomingIntakes.map(intake => ({
+        ...intake,
+        medicationId: med.id,
+        blisterIndex,
+      })));
+      
+      // If repeat reminders enabled, also check for missed intakes (past the intake time)
+      if (settings.repeatRemindersEnabled) {
+        const allTodaysIntakes = getTodaysIntakes(med.name, [blister], takenByArray, med.pillWeightMg, locale, tz);
+        logger.info(`[IntakeReminder] User ${settings.userId}: Blister ${blisterIndex} - all today's intakes: ${allTodaysIntakes.length}, times: ${allTodaysIntakes.map(i => i.intakeTime.toISOString()).join(', ')}`);
+        const missedIntakes = allTodaysIntakes.filter(intake => intake.intakeTime.getTime() < now.getTime());
+        logger.info(`[IntakeReminder] User ${settings.userId}: Blister ${blisterIndex} found ${missedIntakes.length} missed intakes (past intake time)`);
+        
+        // Add missed intakes for repeat reminders (only if not already in upcoming list)
+        const upcomingTimes = new Set(upcomingIntakes.map(i => i.intakeTime.getTime()));
+        allUpcoming.push(...missedIntakes
+          .filter(intake => !upcomingTimes.has(intake.intakeTime.getTime()))
+          .map(intake => ({
+            ...intake,
+            medicationId: med.id,
+            blisterIndex,
+          })));
+      }
+    });
   }
   
+  logger.info(`[IntakeReminder] User ${settings.userId}: Total ${allUpcoming.length} intakes for today`);
+  
   if (allUpcoming.length === 0) {
-    return; // No upcoming intakes in the window
+    logger.info(`[IntakeReminder] User ${settings.userId}: No intakes for today`);
+    return; // No upcoming intakes for today
   }
   
-  // Filter out already-sent reminders (keyed by user)
-  const newReminders = allUpcoming.filter(intake => {
-    const key = `user_${settings.userId}:${intake.medName}:${intake.intakeTime.getTime()}`;
-    return !state.sentReminders.includes(key);
-  });
+  // Determine which doses need reminders (new or repeated)
+  const nowMs = Date.now();
+  let remindersToSend: typeof allUpcoming = [];
   
-  if (newReminders.length === 0) {
-    return; // All reminders already sent
+  for (const intake of allUpcoming) {
+    const key = `user_${settings.userId}:${intake.medName}:${intake.intakeTime.getTime()}`;
+    const existingEntry = state.reminders[key];
+    const intakeTimeMs = intake.intakeTime.getTime();
+    const isIntakePast = intakeTimeMs < nowMs;
+    
+    if (!existingEntry) {
+      // New dose - always send first reminder (upcoming or already missed)
+      remindersToSend.push(intake);
+      logger.info(`[IntakeReminder] User ${settings.userId}: First reminder for "${intake.medName}" at ${intake.intakeTimeStr} (${isIntakePast ? 'missed' : 'upcoming'})`);
+    } else if (settings.repeatRemindersEnabled && isIntakePast) {
+      // Repeat reminder - only for intakes that are already past (missed)
+      const intervalMs = settings.reminderRepeatIntervalMinutes * 60 * 1000;
+      const timeSinceLastReminder = nowMs - existingEntry.lastSentAt;
+      const maxReminders = settings.maxNaggingReminders ?? 5;
+      
+      if (existingEntry.sendCount >= maxReminders) {
+        // Max reminders reached - stop nagging
+        logger.info(`[IntakeReminder] User ${settings.userId}: Max reminders (${maxReminders}) reached for "${intake.medName}" at ${intake.intakeTimeStr}`);
+      } else if (timeSinceLastReminder >= intervalMs) {
+        remindersToSend.push(intake);
+        logger.info(`[IntakeReminder] User ${settings.userId}: Repeat reminder for missed "${intake.medName}" at ${intake.intakeTimeStr} (${existingEntry.sendCount + 1}/${maxReminders})`);
+      }
+    }
+    // Else: Already sent and either repeats disabled or intake not yet past - skip
+  }
+  
+  if (remindersToSend.length === 0) {
+    return; // All reminders already sent and no repeats needed
   }
 
-  logger.info(`[IntakeReminder] User ${settings.userId}: Sending reminder for ${newReminders.length} upcoming intakes...`);
+  // If skipRemindersForTakenDoses is enabled, filter out doses that were already taken today
+  if (settings.skipRemindersForTakenDoses) {
+    // Query doses marked as taken today (takenAt is timestamp, stored as seconds since epoch)
+    const takenToday = await db.select().from(doseTracking).where(
+      and(
+        eq(doseTracking.userId, settings.userId),
+        gte(doseTracking.takenAt, todayStart),
+        lte(doseTracking.takenAt, todayEnd)
+      )
+    );
+    
+    const takenDoseIds = new Set(takenToday.map(d => d.doseId));
+    
+    // Filter out reminders for doses that were already taken
+    remindersToSend = remindersToSend.filter(intake => {
+      const timestamp = intake.intakeTime.getTime();
+      
+      // Check both with and without person suffix
+      if (intake.takenBy.length > 0) {
+        // For multi-person medications, check if any person has taken it
+        const anyTaken = intake.takenBy.some(person => {
+          const doseId = `${intake.medicationId}-${intake.blisterIndex}-${timestamp}-${person}`;
+          return takenDoseIds.has(doseId);
+        });
+        return !anyTaken; // Skip if any person has taken it
+      } else {
+        // For non-person-specific medications
+        const doseId = `${intake.medicationId}-${intake.blisterIndex}-${timestamp}`;
+        return !takenDoseIds.has(doseId);
+      }
+    });
+    
+    if (remindersToSend.length === 0) {
+      logger.info(`[IntakeReminder] User ${settings.userId}: All doses taken, skipping reminders`);
+      return;
+    }
+  }
+
+  logger.info(`[IntakeReminder] User ${settings.userId}: Sending reminder for ${remindersToSend.length} intakes...`);
+  
+  // Determine if this is a repeat reminder:
+  // - Any intake already has a state entry AND is past (repeat after first reminder)
+  // - OR intake is past even without state entry (missed the 15-min window)
+  const isRepeatReminder = remindersToSend.some(intake => {
+    const intakeTimeMs = intake.intakeTime.getTime();
+    const isIntakePast = intakeTimeMs < nowMs;
+    return isIntakePast; // Use repeat message for ANY missed intake
+  });
   
   let emailSuccess = false;
   let shoutrrrSuccess = false;
   
   // Send email if enabled for intake reminders
   if (emailEnabled) {
-    const result = await sendIntakeReminderEmail(settings.notificationEmail!, newReminders, language);
+    const result = await sendIntakeReminderEmail(
+      settings.notificationEmail!, 
+      remindersToSend, 
+      language,
+      isRepeatReminder,
+      settings.reminderRepeatIntervalMinutes
+    );
     emailSuccess = result.success;
     if (result.success) {
       logger.info(`[IntakeReminder] User ${settings.userId}: Email sent successfully`);
@@ -353,8 +413,15 @@ async function checkAndSendIntakeRemindersForUser(
   
   // Send Shoutrrr notification if enabled for intake reminders
   if (shoutrrrEnabled) {
-    const title = t(tr.push.intakeTitle, { minutes: REMINDER_MINUTES_BEFORE });
-    const message = newReminders
+    const title = isRepeatReminder
+      ? (language === 'de' ? '⚠️ Medikamenten-Erinnerung' : '⚠️ Medication Reminder')
+      : t(tr.push.intakeTitle, { minutes: REMINDER_MINUTES_BEFORE });
+    
+    const repeatNote = isRepeatReminder && settings.reminderRepeatIntervalMinutes
+      ? `\n\n⚠️ This reminder will be sent every ${settings.reminderRepeatIntervalMinutes} minutes until marked as taken.`
+      : '';
+    
+    const message = remindersToSend
       .map((i) => {
         const takenByStr = i.takenBy.length > 0 ? ` ${t(tr.intakeReminder.takenBy, { name: i.takenBy.join(", ") })}` : "";
         let dosage = `${i.usage} ${i.usage === 1 ? tr.common.pill : tr.common.pills}`;
@@ -364,7 +431,7 @@ async function checkAndSendIntakeRemindersForUser(
         }
         return `• ${i.medName}${takenByStr}: ${dosage} @ ${i.intakeTimeStr}`;
       })
-      .join("\n");
+      .join("\n") + repeatNote;
     
     const result = await sendShoutrrrNotification(settings.shoutrrrUrl!, title, message);
     shoutrrrSuccess = result.success;
@@ -377,18 +444,32 @@ async function checkAndSendIntakeRemindersForUser(
   
   // Update state if any notification was sent successfully
   if (emailSuccess || shoutrrrSuccess) {
-    const newKeys = newReminders.map(i => `user_${settings.userId}:${i.medName}:${i.intakeTime.getTime()}`);
+    // Update or create entries for sent reminders
+    for (const intake of remindersToSend) {
+      const key = `user_${settings.userId}:${intake.medName}:${intake.intakeTime.getTime()}`;
+      const existing = state.reminders[key];
+      
+      if (existing) {
+        // Update existing entry (repeat)
+        state.reminders[key] = {
+          firstSentAt: existing.firstSentAt,
+          lastSentAt: nowMs,
+          sendCount: existing.sendCount + 1,
+        };
+      } else {
+        // Create new entry (first send)
+        state.reminders[key] = {
+          firstSentAt: nowMs,
+          lastSentAt: nowMs,
+          sendCount: 1,
+        };
+      }
+    }
     
-    // Clean up old entries (older than 24 hours)
-    const oneDayAgo = Date.now() - 24 * 60 * 60 * 1000;
-    const cleanedReminders = state.sentReminders.filter(key => {
-      const timestamp = parseInt(key.split(":").pop() || "0", 10);
-      return timestamp > oneDayAgo;
-    });
+    // Clean up old entries (remove doses from past days)
+    state.reminders = cleanOldIntakeReminders(state.reminders, tz);
     
-    saveIntakeReminderState({
-      sentReminders: [...cleanedReminders, ...newKeys],
-    });
+    saveIntakeReminderState(state);
     
     // Update global reminder state for UI display
     const channel = emailSuccess && shoutrrrSuccess ? "both" : emailSuccess ? "email" : "push";

backend/src/services/reminder-scheduler.ts

@@ -1,155 +1,42 @@
 import nodemailer from "nodemailer";
 import { eq } from "drizzle-orm";
 import { db } from "../db/client.js";
-import { medications, users, userSettings } from "../db/schema.js";
+import { medications, userSettings } from "../db/schema.js";
 import { readFileSync, writeFileSync, existsSync } from "fs";
 import { resolve } from "path";
 import { loadUserSettings, getAllUserSettings, sendShoutrrrNotification, type UserSettings } from "../routes/settings.js";
-import { getTranslations, t, getDateLocale, type Language } from "../i18n/translations.js";
+import { getTranslations, t, type Language } from "../i18n/translations.js";
 
-type Blister = { usage: number; every: number; start: string };
-
-type ReminderState = {
-  lastAutoEmailSent: string | null; // ISO date string
-  lastAutoEmailDate: string | null; // YYYY-MM-DD - to track if we already sent today
-  notifiedMedications: string[]; // List of medication names that have been notified (cleared when restocked)
-  nextScheduledCheck: string | null; // ISO date string for when the next check is scheduled
-  lastNotificationType: "stock" | "intake" | null; // Type of last notification
-  lastNotificationChannel: "email" | "push" | "both" | null; // Channel used for last notification
-};
+// Import shared utilities
+import {
+  getTimezone,
+  formatInTimezone,
+  getCurrentHourInTimezone,
+  getTodayInTimezone,
+  getNextScheduledTime,
+  getMsUntilNextCheck,
+  parseBlisters,
+  calculateDailyUsage,
+  calculateDepletionInfo,
+  parseReminderState,
+  createDefaultReminderState,
+  type Blister,
+  type ReminderState,
+} from "../utils/scheduler-utils.js";
 
 const REMINDER_HOUR = parseInt(process.env.REMINDER_HOUR ?? "6", 10); // Default 6:00 AM local time
 
-// Get current timezone from TZ env variable or default to UTC
-function getTimezone(): string {
-  return process.env.TZ || "UTC";
-}
-
-// Format a date in the configured timezone
-function formatInTimezone(date: Date): string {
-  return date.toLocaleString("de-DE", { 
-    timeZone: getTimezone(),
-    day: "2-digit",
-    month: "2-digit",
-    year: "numeric",
-    hour: "2-digit",
-    minute: "2-digit"
-  });
-}
-
-// Get current hour in the configured timezone
-function getCurrentHourInTimezone(): number {
-  const now = new Date();
-  const timeStr = now.toLocaleString("en-US", { 
-    timeZone: getTimezone(), 
-    hour: "numeric", 
-    hour12: false 
-  });
-  return parseInt(timeStr, 10);
-}
-
-// Get today's date string in the configured timezone (YYYY-MM-DD)
-function getTodayInTimezone(): string {
-  const now = new Date();
-  const parts = now.toLocaleDateString("en-CA", { timeZone: getTimezone() }).split("-");
-  return parts.join("-"); // YYYY-MM-DD format
-}
-
-function getNextScheduledTime(): Date {
-  const now = new Date();
-  const tz = getTimezone();
-  
-  // Get current time components in the target timezone
-  const formatter = new Intl.DateTimeFormat("en-US", {
-    timeZone: tz,
-    year: "numeric",
-    month: "2-digit",
-    day: "2-digit",
-    hour: "2-digit",
-    minute: "2-digit",
-    hour12: false
-  });
-  
-  const parts = formatter.formatToParts(now);
-  const getPart = (type: string) => parts.find(p => p.type === type)?.value || "0";
-  
-  const currentHour = parseInt(getPart("hour"), 10);
-  const currentMinute = parseInt(getPart("minute"), 10);
-  
-  // Calculate if we need tomorrow
-  const needTomorrow = currentHour > REMINDER_HOUR || (currentHour === REMINDER_HOUR && currentMinute > 0);
-  
-  // Get the date we want to schedule for
-  const year = parseInt(getPart("year"), 10);
-  const month = parseInt(getPart("month"), 10);
-  let day = parseInt(getPart("day"), 10);
-  
-  if (needTomorrow) {
-    day += 1;
-  }
-  
-  // Handle month overflow simply by adding a day to now if needed
-  let targetDate: Date;
-  if (needTomorrow) {
-    targetDate = new Date(now.getTime() + 24 * 60 * 60 * 1000);
-  } else {
-    targetDate = new Date(now);
-  }
-  
-  // Get the target date's date string in the timezone
-  const targetFormatter = new Intl.DateTimeFormat("en-CA", {
-    timeZone: tz,
-    year: "numeric",
-    month: "2-digit",
-    day: "2-digit"
-  });
-  const [targetYear, targetMonth, targetDay] = targetFormatter.format(targetDate).split("-").map(Number);
-  
-  // Now we need to find the UTC time that corresponds to REMINDER_HOUR:00 on targetDate in the target timezone
-  // Use a search approach: start with a guess and adjust
-  const guessUtc = new Date(Date.UTC(targetYear, targetMonth - 1, targetDay, REMINDER_HOUR, 0, 0, 0));
-  
-  // Check what hour this UTC time corresponds to in the target timezone
-  const checkFormatter = new Intl.DateTimeFormat("en-US", {
-    timeZone: tz,
-    hour: "2-digit",
-    hour12: false
-  });
-  
-  // Adjust based on the difference
-  const guessHour = parseInt(checkFormatter.format(guessUtc), 10);
-  const hourDiff = guessHour - REMINDER_HOUR;
-  
-  // Apply correction (if guessHour is higher, we need to subtract time)
-  const correctedUtc = new Date(guessUtc.getTime() - hourDiff * 60 * 60 * 1000);
-  
-  return correctedUtc;
-}
-
-function getMsUntilNextCheck(): number {
-  const next = getNextScheduledTime();
-  return next.getTime() - Date.now();
-}
-
 const reminderStateFile = resolve(process.cwd(), "data", "reminder-state.json");
 
 function loadReminderState(): ReminderState {
   try {
     if (existsSync(reminderStateFile)) {
-      const saved = JSON.parse(readFileSync(reminderStateFile, "utf-8"));
-      return {
-        lastAutoEmailSent: saved.lastAutoEmailSent ?? null,
-        lastAutoEmailDate: saved.lastAutoEmailDate ?? null,
-        notifiedMedications: saved.notifiedMedications ?? [],
-        nextScheduledCheck: saved.nextScheduledCheck ?? null,
-        lastNotificationType: saved.lastNotificationType ?? null,
-        lastNotificationChannel: saved.lastNotificationChannel ?? null,
-      };
+      return parseReminderState(readFileSync(reminderStateFile, "utf-8"));
     }
   } catch {
     // ignore
   }
-  return { lastAutoEmailSent: null, lastAutoEmailDate: null, notifiedMedications: [], nextScheduledCheck: null, lastNotificationType: null, lastNotificationChannel: null };
+  return createDefaultReminderState();
 }
 
 function saveReminderState(state: ReminderState): void {
@@ -188,39 +75,8 @@ export async function updateUserReminderSentTime(
     .where(eq(userSettings.userId, userId));
 }
 
-function parseBlisters(row: { usageJson: string; everyJson: string; startJson: string }): Blister[] {
-  try {
-    const usage = JSON.parse(row.usageJson) as number[];
-    const every = JSON.parse(row.everyJson) as number[];
-    const start = JSON.parse(row.startJson) as string[];
-    const len = Math.min(usage.length, every.length, start.length);
-    const blisters: Blister[] = [];
-    for (let i = 0; i < len; i++) {
-      blisters.push({ usage: usage[i], every: every[i], start: start[i] });
-    }
-    return blisters;
-  } catch {
-    return [];
-  }
-}
-
-function calculateDailyUsage(blisters: Blister[]): number {
-  return blisters.reduce((sum, s) => sum + s.usage / s.every, 0);
-}
-
-function calculateDepletionInfo(med: { count: number; blisters: Blister[] }, language: Language): { daysLeft: number | null; depletionDate: string | null } {
-  const dailyUsage = calculateDailyUsage(med.blisters);
-  if (dailyUsage <= 0) return { daysLeft: null, depletionDate: null };
-  
-  const daysLeft = Math.floor(med.count / dailyUsage);
-  const depletionMs = Date.now() + daysLeft * 86_400_000;
-  const depletionDate = new Date(depletionMs).toLocaleDateString(getDateLocale(language), {
-    weekday: "short",
-    day: "2-digit",
-    month: "short",
-  });
-  
-  return { daysLeft, depletionDate };
+function parseBlistersFromRow(row: { usageJson: string; everyJson: string; startJson: string }): Blister[] {
+  return parseBlisters(row);
 }
 
 type LowStockItem = {
@@ -236,7 +92,7 @@ async function getMedicationsNeedingReminder(userId: number, reminderDaysBefore:
   const lowStock: LowStockItem[] = [];
   
   for (const row of rows) {
-    const blisters = parseBlisters(row);
+    const blisters = parseBlistersFromRow(row);
     const totalPills = row.packCount * row.blistersPerPack * row.pillsPerBlister + row.looseTablets;
     const { daysLeft, depletionDate } = calculateDepletionInfo({ count: totalPills, blisters }, language);
     
@@ -486,8 +342,8 @@ async function checkAndSendReminderForUser(
 let schedulerTimeout: NodeJS.Timeout | null = null;
 
 function scheduleNextCheck(logger: { info: (msg: string) => void; error: (msg: string) => void }): void {
-  const msUntilNext = getMsUntilNextCheck();
-  const nextTime = getNextScheduledTime();
+  const msUntilNext = getMsUntilNextCheck(REMINDER_HOUR);
+  const nextTime = getNextScheduledTime(REMINDER_HOUR);
   
   // Save next scheduled time to state
   const state = loadReminderState();

backend/src/test/auth.test.ts

@@ -0,0 +1,685 @@
+/**
+ * E2E Tests for auth routes with AUTH_ENABLED=true
+ */
+import { describe, it, expect, beforeAll, afterAll, beforeEach, vi } from "vitest";
+import Fastify, { FastifyInstance } from "fastify";
+import cookie from "@fastify/cookie";
+import jwt from "@fastify/jwt";
+import sensible from "@fastify/sensible";
+import { createClient, Client } from "@libsql/client";
+import { drizzle } from "drizzle-orm/libsql";
+
+// Use vi.hoisted to create the db BEFORE mocks are set up
+const { testClient, testDb } = vi.hoisted(() => {
+  const { createClient } = require("@libsql/client");
+  const { drizzle } = require("drizzle-orm/libsql");
+  const client = createClient({ url: ":memory:" });
+  const db = drizzle(client);
+  return { testClient: client, testDb: db };
+});
+
+// Mock modules using the hoisted db
+vi.mock("../db/client.js", () => ({
+  db: testDb,
+  migrationsReady: Promise.resolve(),
+}));
+
+// Enable auth for these tests
+vi.mock("../plugins/env.js", () => ({
+  env: {
+    AUTH_ENABLED: true,
+    LOCAL_AUTH_ENABLED: true,
+    REGISTRATION_ENABLED: true,
+    OIDC_ENABLED: false,
+    NODE_ENV: "test",
+    LOG_LEVEL: "silent",
+    PORT: 3000,
+    CORS_ORIGINS: "*",
+    JWT_SECRET: "test-jwt-secret-12345",
+    REFRESH_SECRET: "test-refresh-secret-12345",
+    COOKIE_SECRET: "test-cookie-secret-12345",
+    ACCESS_TOKEN_TTL_MINUTES: 15,
+    REFRESH_TOKEN_TTL_DAYS: 7,
+  },
+}));
+
+// Import real auth plugin and routes
+const { authRoutes } = await import("../routes/auth.js");
+
+// =============================================================================
+// Test Setup
+// =============================================================================
+
+async function createSchema(client: Client) {
+  const tableCreations = [
+    `CREATE TABLE IF NOT EXISTS users (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      username text NOT NULL UNIQUE,
+      password_hash text,
+      avatar_url text,
+      auth_provider text NOT NULL DEFAULT 'local',
+      oidc_subject text,
+      is_active integer NOT NULL DEFAULT 1,
+      last_login_at integer,
+      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      updated_at integer NOT NULL DEFAULT (strftime('%s','now'))
+    )`,
+    `CREATE TABLE IF NOT EXISTS refresh_tokens (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      user_id integer NOT NULL,
+      token_id text NOT NULL UNIQUE,
+      expires_at integer NOT NULL,
+      revoked integer NOT NULL DEFAULT 0,
+      rotated_at integer,
+      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+    )`,
+  ];
+
+  for (const sql of tableCreations) {
+    await client.execute(sql);
+  }
+}
+
+async function clearData(client: Client) {
+  await client.execute("DELETE FROM refresh_tokens");
+  await client.execute("DELETE FROM users");
+  await client.execute("DELETE FROM sqlite_sequence");
+}
+
+// =============================================================================
+// Tests
+// =============================================================================
+
+describe("Auth Routes (AUTH_ENABLED=true)", () => {
+  let app: FastifyInstance;
+
+  beforeAll(async () => {
+    await createSchema(testClient);
+
+    app = Fastify({ logger: false });
+
+    await app.register(sensible);
+    await app.register(cookie, { secret: "test-cookie-secret-12345" });
+    await app.register(jwt, {
+      secret: "test-jwt-secret-12345",
+      cookie: { cookieName: "access_token", signed: false },
+    });
+
+    // Decorate with config needed by auth routes
+    app.decorate("config", {
+      accessSecret: "test-jwt-secret-12345",
+      refreshSecret: "test-refresh-secret-12345",
+      accessTtl: 15,
+      refreshTtl: 7,
+      cookieOptions: { httpOnly: true, sameSite: "lax", secure: false, path: "/", maxAge: 15 * 60 },
+      refreshCookieOptions: { httpOnly: true, sameSite: "lax", secure: false, path: "/auth", maxAge: 7 * 24 * 60 * 60 },
+    });
+
+    await app.register(authRoutes);
+    await app.ready();
+  });
+
+  afterAll(async () => {
+    await app.close();
+    testClient.close();
+  });
+
+  beforeEach(async () => {
+    await clearData(testClient);
+  });
+
+  // ---------------------------------------------------------------------------
+  // Auth State Tests
+  // ---------------------------------------------------------------------------
+
+  describe("GET /auth/state", () => {
+    it("should return auth state", async () => {
+      const response = await app.inject({
+        method: "GET",
+        url: "/auth/state",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.authEnabled).toBe(true);
+      expect(data.registrationEnabled).toBe(true);
+      expect(data.localAuthEnabled).toBe(true);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Registration Tests
+  // ---------------------------------------------------------------------------
+
+  describe("POST /auth/register", () => {
+    it("should register a new user", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "testuser",
+          password: "TestPassword123",
+        },
+      });
+
+      expect(response.statusCode).toBe(201);
+      const data = response.json();
+      expect(data.ok).toBe(true);
+      expect(data.user.username).toBe("testuser");
+    });
+
+    it("should reject duplicate username", async () => {
+      // First registration
+      await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "duplicate",
+          password: "TestPassword123",
+        },
+      });
+
+      // Second registration with same username
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "duplicate",
+          password: "AnotherPassword123",
+        },
+      });
+
+      expect(response.statusCode).toBe(409);
+      expect(response.json().code).toBe("USERNAME_EXISTS");
+    });
+
+    it("should reject short password", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "testuser",
+          password: "short",
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().code).toBe("VALIDATION_ERROR");
+    });
+
+    it("should reject short username", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "ab",
+          password: "ValidPassword123",
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().code).toBe("VALIDATION_ERROR");
+    });
+
+    it("should reject invalid username characters", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "test@user",
+          password: "ValidPassword123",
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().code).toBe("VALIDATION_ERROR");
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Login Tests
+  // ---------------------------------------------------------------------------
+
+  describe("POST /auth/login", () => {
+    beforeEach(async () => {
+      // Create a test user
+      await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "loginuser",
+          password: "TestPassword123",
+        },
+      });
+    });
+
+    it("should login with valid credentials", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "loginuser",
+          password: "TestPassword123",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.ok).toBe(true);
+      expect(data.user.username).toBe("loginuser");
+
+      // Should set cookies
+      const cookies = response.cookies;
+      expect(cookies.find((c: any) => c.name === "access_token")).toBeDefined();
+      expect(cookies.find((c: any) => c.name === "refresh_token")).toBeDefined();
+    });
+
+    it("should reject invalid password", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "loginuser",
+          password: "WrongPassword",
+        },
+      });
+
+      expect(response.statusCode).toBe(401);
+      expect(response.json().code).toBe("INVALID_CREDENTIALS");
+    });
+
+    it("should reject non-existent user", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "nonexistent",
+          password: "TestPassword123",
+        },
+      });
+
+      expect(response.statusCode).toBe(401);
+      expect(response.json().code).toBe("INVALID_CREDENTIALS");
+    });
+
+    it("should support rememberMe option", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "loginuser",
+          password: "TestPassword123",
+          rememberMe: true,
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.ok).toBe(true);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Token Refresh Tests
+  // ---------------------------------------------------------------------------
+
+  describe("POST /auth/refresh", () => {
+    it("should refresh access token with valid refresh token", async () => {
+      // Login first to get tokens
+      const loginResponse = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "loginuser",
+          password: "TestPassword123",
+        },
+      });
+
+      // Need to create user first
+      await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "refreshuser",
+          password: "TestPassword123",
+        },
+      });
+
+      const login = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "refreshuser",
+          password: "TestPassword123",
+        },
+      });
+
+      const refreshToken = login.cookies.find((c: any) => c.name === "refresh_token");
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/refresh",
+        cookies: {
+          refresh_token: refreshToken?.value ?? "",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json().ok).toBe(true);
+    });
+
+    it("should reject without refresh token", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/refresh",
+      });
+
+      expect(response.statusCode).toBe(401);
+      expect(response.json().code).toBe("NO_REFRESH_TOKEN");
+    });
+
+    it("should reject invalid refresh token", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/refresh",
+        cookies: {
+          refresh_token: "invalid-token",
+        },
+      });
+
+      expect(response.statusCode).toBe(401);
+      expect(response.json().code).toBe("INVALID_REFRESH_TOKEN");
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Logout Tests
+  // ---------------------------------------------------------------------------
+
+  describe("POST /auth/logout", () => {
+    it("should logout and clear cookies", async () => {
+      // Register and login first
+      await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "logoutuser",
+          password: "TestPassword123",
+        },
+      });
+
+      const login = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "logoutuser",
+          password: "TestPassword123",
+        },
+      });
+
+      const refreshToken = login.cookies.find((c: any) => c.name === "refresh_token");
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/logout",
+        cookies: {
+          refresh_token: refreshToken?.value ?? "",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json().ok).toBe(true);
+    });
+
+    it("should succeed even without refresh token", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/logout",
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json().ok).toBe(true);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Me Endpoint Tests
+  // ---------------------------------------------------------------------------
+
+  describe("GET /auth/me", () => {
+    it("should return user info with valid access token", async () => {
+      // Register and login
+      await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "meuser",
+          password: "TestPassword123",
+        },
+      });
+
+      const login = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "meuser",
+          password: "TestPassword123",
+        },
+      });
+
+      const accessToken = login.cookies.find((c: any) => c.name === "access_token");
+
+      const response = await app.inject({
+        method: "GET",
+        url: "/auth/me",
+        cookies: {
+          access_token: accessToken?.value ?? "",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.username).toBe("meuser");
+    });
+
+    it("should reject without access token", async () => {
+      const response = await app.inject({
+        method: "GET",
+        url: "/auth/me",
+      });
+
+      expect(response.statusCode).toBe(401);
+    });
+
+    it("should reject with invalid access token", async () => {
+      const response = await app.inject({
+        method: "GET",
+        url: "/auth/me",
+        cookies: {
+          access_token: "invalid.jwt.token",
+        },
+      });
+
+      expect(response.statusCode).toBe(401);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Inactive User Tests
+  // ---------------------------------------------------------------------------
+
+  describe("Inactive user handling", () => {
+    it("should reject login for inactive user", async () => {
+      // Create user
+      await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "inactiveuser",
+          password: "TestPassword123",
+        },
+      });
+
+      // Manually deactivate user in DB
+      await testClient.execute({
+        sql: "UPDATE users SET is_active = 0 WHERE username = ?",
+        args: ["inactiveuser"],
+      });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "inactiveuser",
+          password: "TestPassword123",
+        },
+      });
+
+      expect(response.statusCode).toBe(401);
+      expect(response.json().code).toBe("ACCOUNT_DISABLED");
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Profile Update Tests
+  // ---------------------------------------------------------------------------
+
+  describe("PUT /auth/me (profile update)", () => {
+    it("should update password with valid current password", async () => {
+      // Register and login
+      await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "profileuser",
+          password: "TestPassword123",
+        },
+      });
+
+      const login = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "profileuser",
+          password: "TestPassword123",
+        },
+      });
+
+      const accessToken = login.cookies.find((c: any) => c.name === "access_token");
+
+      const response = await app.inject({
+        method: "PUT",
+        url: "/auth/me",
+        cookies: {
+          access_token: accessToken?.value ?? "",
+        },
+        payload: {
+          currentPassword: "TestPassword123",
+          newPassword: "NewPassword456",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json().ok).toBe(true);
+
+      // Verify can login with new password
+      const newLogin = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "profileuser",
+          password: "NewPassword456",
+        },
+      });
+
+      expect(newLogin.statusCode).toBe(200);
+    });
+
+    it("should reject password change without current password", async () => {
+      await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "profileuser2",
+          password: "TestPassword123",
+        },
+      });
+
+      const login = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "profileuser2",
+          password: "TestPassword123",
+        },
+      });
+
+      const accessToken = login.cookies.find((c: any) => c.name === "access_token");
+
+      const response = await app.inject({
+        method: "PUT",
+        url: "/auth/me",
+        cookies: {
+          access_token: accessToken?.value ?? "",
+        },
+        payload: {
+          newPassword: "NewPassword456",
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().code).toBe("CURRENT_PASSWORD_REQUIRED");
+    });
+
+    it("should reject password change with wrong current password", async () => {
+      await app.inject({
+        method: "POST",
+        url: "/auth/register",
+        payload: {
+          username: "profileuser3",
+          password: "TestPassword123",
+        },
+      });
+
+      const login = await app.inject({
+        method: "POST",
+        url: "/auth/login",
+        payload: {
+          username: "profileuser3",
+          password: "TestPassword123",
+        },
+      });
+
+      const accessToken = login.cookies.find((c: any) => c.name === "access_token");
+
+      const response = await app.inject({
+        method: "PUT",
+        url: "/auth/me",
+        cookies: {
+          access_token: accessToken?.value ?? "",
+        },
+        payload: {
+          currentPassword: "WrongPassword",
+          newPassword: "NewPassword456",
+        },
+      });
+
+      expect(response.statusCode).toBe(401);
+      expect(response.json().code).toBe("INVALID_PASSWORD");
+    });
+
+    it("should reject profile update without auth", async () => {
+      const response = await app.inject({
+        method: "PUT",
+        url: "/auth/me",
+        payload: {
+          currentPassword: "Test123",
+          newPassword: "NewPassword456",
+        },
+      });
+
+      expect(response.statusCode).toBe(401);
+    });
+  });
+});

backend/src/test/database.test.ts

@@ -0,0 +1,897 @@
+import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
+import { createClient } from "@libsql/client";
+import { drizzle } from "drizzle-orm/libsql";
+import { mkdirSync, rmSync, existsSync } from "fs";
+import { resolve } from "path";
+import { tmpdir } from "os";
+
+// Import the exported utility functions from client.ts
+import {
+  buildDbUrl,
+  getDbPaths,
+  ensureDataDirectory,
+  getTableCreationSQL,
+  runTableMigrations,
+  ensureDefaultUser,
+} from "../db/client.js";
+
+// Import the exported utility functions from migrate.ts
+import {
+  getTableCreationSQL as getTableCreationSQLFromMigrate,
+  splitSQLStatements,
+  executeMigration,
+  getStatementPreview,
+} from "../db/migrate.js";
+
+describe("Migration Script Utilities", () => {
+  describe("getTableCreationSQL", () => {
+    it("should return a non-empty array of SQL statements", () => {
+      const statements = getTableCreationSQL();
+      expect(Array.isArray(statements)).toBe(true);
+      expect(statements.length).toBeGreaterThan(0);
+    });
+
+    it("should contain all table definitions", () => {
+      const statements = getTableCreationSQL();
+      const allSQL = statements.join(" ");
+      expect(allSQL).toContain("CREATE TABLE IF NOT EXISTS users");
+      expect(allSQL).toContain("CREATE TABLE IF NOT EXISTS medications");
+      expect(allSQL).toContain("CREATE TABLE IF NOT EXISTS user_settings");
+      expect(allSQL).toContain("CREATE TABLE IF NOT EXISTS refresh_tokens");
+      expect(allSQL).toContain("CREATE TABLE IF NOT EXISTS share_tokens");
+      expect(allSQL).toContain("CREATE TABLE IF NOT EXISTS dose_tracking");
+    });
+  });
+
+  describe("splitSQLStatements", () => {
+    it("should split SQL by semicolons", () => {
+      const sql = "SELECT 1; SELECT 2; SELECT 3;";
+      const statements = splitSQLStatements(sql);
+      expect(statements).toHaveLength(3);
+    });
+
+    it("should filter out empty statements", () => {
+      const sql = "SELECT 1;; ; SELECT 2;";
+      const statements = splitSQLStatements(sql);
+      expect(statements).toHaveLength(2);
+    });
+
+    it("should handle statements without trailing semicolon", () => {
+      const sql = "SELECT 1; SELECT 2";
+      const statements = splitSQLStatements(sql);
+      expect(statements).toHaveLength(2);
+    });
+
+    it("should handle getTableCreationSQL output correctly", () => {
+      const statements = getTableCreationSQL();
+      expect(statements).toHaveLength(6);
+    });
+
+    it("should preserve whitespace within statements", () => {
+      const sql = "CREATE TABLE test (\n  id INTEGER\n);";
+      const statements = splitSQLStatements(sql);
+      expect(statements[0]).toContain("\n");
+    });
+  });
+
+  describe("getStatementPreview", () => {
+    it("should return full string if shorter than maxLength", () => {
+      const preview = getStatementPreview("SELECT 1", 50);
+      expect(preview).toBe("SELECT 1");
+    });
+
+    it("should truncate and add ellipsis if longer than maxLength", () => {
+      const preview = getStatementPreview("SELECT * FROM very_long_table_name WHERE condition = true", 20);
+      expect(preview).toBe("SELECT * FROM very_l...");
+      expect(preview.length).toBe(23); // 20 + "..."
+    });
+
+    it("should use default maxLength of 50", () => {
+      const longStmt = "A".repeat(100);
+      const preview = getStatementPreview(longStmt);
+      expect(preview).toBe("A".repeat(50) + "...");
+    });
+
+    it("should trim whitespace", () => {
+      const preview = getStatementPreview("  SELECT 1  ", 50);
+      expect(preview).toBe("SELECT 1");
+    });
+
+    it("should handle CREATE TABLE statements", () => {
+      const stmt = "CREATE TABLE IF NOT EXISTS users (id integer PRIMARY KEY)";
+      const preview = getStatementPreview(stmt, 30);
+      expect(preview).toBe("CREATE TABLE IF NOT EXISTS use...");
+    });
+  });
+
+  describe("executeMigration", () => {
+    let client: ReturnType<typeof createClient>;
+
+    beforeEach(() => {
+      client = createClient({ url: ":memory:" });
+    });
+
+    it("should execute all migrations successfully", async () => {
+      const result = await executeMigration(client);
+      expect(result.success).toBe(true);
+      expect(result.executed).toBe(6);
+      expect(result.errors).toHaveLength(0);
+    });
+
+    it("should create all tables", async () => {
+      await executeMigration(client);
+      
+      const tables = await client.execute(
+        "SELECT name FROM sqlite_master WHERE type='table' ORDER BY name"
+      );
+      
+      const tableNames = tables.rows.map(r => r.name);
+      expect(tableNames).toContain("users");
+      expect(tableNames).toContain("medications");
+      expect(tableNames).toContain("user_settings");
+      expect(tableNames).toContain("refresh_tokens");
+      expect(tableNames).toContain("share_tokens");
+      expect(tableNames).toContain("dose_tracking");
+    });
+
+    it("should be idempotent", async () => {
+      await executeMigration(client);
+      const result = await executeMigration(client);
+      expect(result.success).toBe(true);
+      expect(result.executed).toBe(6);
+    });
+
+    it("should allow inserting data after migration", async () => {
+      await executeMigration(client);
+      
+      await client.execute("INSERT INTO users (username) VALUES ('testuser')");
+      const result = await client.execute("SELECT * FROM users");
+      expect(result.rows).toHaveLength(1);
+    });
+  });
+});
+
+describe("Database Client Utilities", () => {
+  describe("buildDbUrl", () => {
+    it("should build a file:// URL from path", () => {
+      const url = buildDbUrl("/path/to/db.sqlite");
+      expect(url).toBe("file:/path/to/db.sqlite");
+    });
+
+    it("should handle relative paths", () => {
+      const url = buildDbUrl("./data/test.db");
+      expect(url).toBe("file:./data/test.db");
+    });
+  });
+
+  describe("getDbPaths", () => {
+    it("should return correct paths based on cwd", () => {
+      const paths = getDbPaths("/app");
+      expect(paths.dataDir).toBe("/app/data");
+      expect(paths.dbPath).toBe("/app/data/medassist-ng.db");
+      expect(paths.url).toBe("file:/app/data/medassist-ng.db");
+    });
+
+    it("should use process.cwd() by default", () => {
+      const paths = getDbPaths();
+      expect(paths.dataDir).toContain("data");
+      expect(paths.dbPath).toContain("medassist-ng.db");
+    });
+  });
+
+  describe("ensureDataDirectory", () => {
+    const testDir = resolve(tmpdir(), `test-data-dir-${Date.now()}`);
+
+    afterEach(() => {
+      try {
+        if (existsSync(testDir)) {
+          rmSync(testDir, { recursive: true, force: true });
+        }
+      } catch {
+        // ignore cleanup errors
+      }
+    });
+
+    it("should create directory if it does not exist", () => {
+      const result = ensureDataDirectory(testDir);
+      expect(result.success).toBe(true);
+      expect(existsSync(testDir)).toBe(true);
+    });
+
+    it("should succeed if directory already exists", () => {
+      mkdirSync(testDir, { recursive: true });
+      const result = ensureDataDirectory(testDir);
+      expect(result.success).toBe(true);
+    });
+
+    it("should create .write-test file", () => {
+      const result = ensureDataDirectory(testDir);
+      expect(result.success).toBe(true);
+      expect(existsSync(resolve(testDir, ".write-test"))).toBe(true);
+    });
+
+    it("should return error for invalid path", () => {
+      // Try to create in a path that can't exist
+      const result = ensureDataDirectory("/nonexistent/root/path/that/cannot/exist");
+      expect(result.success).toBe(false);
+      expect(result.error).toBeDefined();
+    });
+  });
+
+  describe("getTableCreationSQL", () => {
+    it("should return array of SQL statements", () => {
+      const statements = getTableCreationSQL();
+      expect(Array.isArray(statements)).toBe(true);
+      expect(statements.length).toBe(6);
+    });
+
+    it("should include users table", () => {
+      const statements = getTableCreationSQL();
+      const usersSQL = statements.find(s => s.includes("CREATE TABLE IF NOT EXISTS users"));
+      expect(usersSQL).toBeDefined();
+      expect(usersSQL).toContain("username text NOT NULL UNIQUE");
+      expect(usersSQL).toContain("password_hash text");
+      expect(usersSQL).toContain("auth_provider text NOT NULL DEFAULT 'local'");
+    });
+
+    it("should include medications table", () => {
+      const statements = getTableCreationSQL();
+      const medsSQL = statements.find(s => s.includes("CREATE TABLE IF NOT EXISTS medications"));
+      expect(medsSQL).toBeDefined();
+      expect(medsSQL).toContain("user_id integer NOT NULL");
+      expect(medsSQL).toContain("taken_by_json text NOT NULL DEFAULT '[]'");
+      expect(medsSQL).toContain("FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE");
+    });
+
+    it("should include user_settings table", () => {
+      const statements = getTableCreationSQL();
+      const settingsSQL = statements.find(s => s.includes("CREATE TABLE IF NOT EXISTS user_settings"));
+      expect(settingsSQL).toBeDefined();
+      expect(settingsSQL).toContain("email_enabled integer NOT NULL DEFAULT 0");
+      expect(settingsSQL).toContain("language text NOT NULL DEFAULT 'en'");
+    });
+
+    it("should include refresh_tokens table", () => {
+      const statements = getTableCreationSQL();
+      const tokensSQL = statements.find(s => s.includes("CREATE TABLE IF NOT EXISTS refresh_tokens"));
+      expect(tokensSQL).toBeDefined();
+      expect(tokensSQL).toContain("token_id text NOT NULL UNIQUE");
+    });
+
+    it("should include share_tokens table", () => {
+      const statements = getTableCreationSQL();
+      const shareSQL = statements.find(s => s.includes("CREATE TABLE IF NOT EXISTS share_tokens"));
+      expect(shareSQL).toBeDefined();
+      expect(shareSQL).toContain("taken_by text NOT NULL");
+    });
+
+    it("should include dose_tracking table", () => {
+      const statements = getTableCreationSQL();
+      const doseSQL = statements.find(s => s.includes("CREATE TABLE IF NOT EXISTS dose_tracking"));
+      expect(doseSQL).toBeDefined();
+      expect(doseSQL).toContain("dose_id text NOT NULL");
+      expect(doseSQL).toContain("marked_by text");
+    });
+  });
+
+  describe("runTableMigrations", () => {
+    let client: ReturnType<typeof createClient>;
+
+    beforeEach(() => {
+      client = createClient({ url: ":memory:" });
+    });
+
+    it("should create all tables successfully", async () => {
+      const result = await runTableMigrations(client);
+      expect(result.success).toBe(true);
+      expect(result.errors).toHaveLength(0);
+    });
+
+    it("should be idempotent (run twice without errors)", async () => {
+      await runTableMigrations(client);
+      const result = await runTableMigrations(client);
+      expect(result.success).toBe(true);
+      expect(result.errors).toHaveLength(0);
+    });
+
+    it("should create all 6 tables", async () => {
+      await runTableMigrations(client);
+      
+      const tables = await client.execute(
+        "SELECT name FROM sqlite_master WHERE type='table' ORDER BY name"
+      );
+      
+      const tableNames = tables.rows.map(r => r.name);
+      expect(tableNames).toContain("users");
+      expect(tableNames).toContain("medications");
+      expect(tableNames).toContain("user_settings");
+      expect(tableNames).toContain("refresh_tokens");
+      expect(tableNames).toContain("share_tokens");
+      expect(tableNames).toContain("dose_tracking");
+    });
+  });
+
+  describe("ensureDefaultUser", () => {
+    let client: ReturnType<typeof createClient>;
+
+    beforeEach(async () => {
+      client = createClient({ url: ":memory:" });
+      await runTableMigrations(client);
+    });
+
+    it("should create default user when auth is disabled", async () => {
+      const created = await ensureDefaultUser(client, false);
+      expect(created).toBe(true);
+      
+      const result = await client.execute("SELECT * FROM users WHERE id = 1");
+      expect(result.rows).toHaveLength(1);
+      expect(result.rows[0].username).toBe("default");
+      expect(result.rows[0].auth_provider).toBe("local");
+    });
+
+    it("should not create user when auth is enabled", async () => {
+      const created = await ensureDefaultUser(client, true);
+      expect(created).toBe(false);
+      
+      const result = await client.execute("SELECT * FROM users WHERE id = 1");
+      expect(result.rows).toHaveLength(0);
+    });
+
+    it("should not duplicate user if already exists", async () => {
+      // First call creates the user
+      await ensureDefaultUser(client, false);
+      
+      // Second call should not create again
+      const created = await ensureDefaultUser(client, false);
+      expect(created).toBe(false);
+      
+      // Should still have only one user
+      const result = await client.execute("SELECT * FROM users");
+      expect(result.rows).toHaveLength(1);
+    });
+  });
+});
+
+describe("Database Client", () => {
+  describe("In-Memory Database Creation", () => {
+    it("should create an in-memory SQLite client", () => {
+      const client = createClient({ url: ":memory:" });
+      expect(client).toBeDefined();
+    });
+
+    it("should create a drizzle instance from client", () => {
+      const client = createClient({ url: ":memory:" });
+      const db = drizzle(client);
+      expect(db).toBeDefined();
+    });
+
+    it("should execute SQL statements", async () => {
+      const client = createClient({ url: ":memory:" });
+      
+      // Create a simple test table
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS test_table (
+          id INTEGER PRIMARY KEY AUTOINCREMENT,
+          name TEXT NOT NULL
+        )
+      `);
+      
+      // Insert a row
+      await client.execute("INSERT INTO test_table (name) VALUES ('test')");
+      
+      // Query the row
+      const result = await client.execute("SELECT * FROM test_table");
+      expect(result.rows).toHaveLength(1);
+      expect(result.rows[0].name).toBe("test");
+    });
+  });
+
+  describe("Table Schema Creation", () => {
+    let client: ReturnType<typeof createClient>;
+
+    beforeEach(async () => {
+      client = createClient({ url: ":memory:" });
+    });
+
+    it("should create users table", async () => {
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE,
+          password_hash text,
+          avatar_url text,
+          auth_provider text NOT NULL DEFAULT 'local',
+          oidc_subject text,
+          is_active integer NOT NULL DEFAULT 1,
+          last_login_at integer,
+          created_at integer NOT NULL DEFAULT (strftime('%s','now')),
+          updated_at integer NOT NULL DEFAULT (strftime('%s','now'))
+        )
+      `);
+
+      // Verify table exists
+      const tables = await client.execute(
+        "SELECT name FROM sqlite_master WHERE type='table' AND name='users'"
+      );
+      expect(tables.rows).toHaveLength(1);
+    });
+
+    it("should create medications table with foreign key", async () => {
+      // First create users table
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE,
+          auth_provider text NOT NULL DEFAULT 'local'
+        )
+      `);
+
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS medications (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          user_id integer NOT NULL,
+          name text NOT NULL,
+          generic_name text,
+          taken_by_json text NOT NULL DEFAULT '[]',
+          pack_count integer NOT NULL DEFAULT 1,
+          blisters_per_pack integer NOT NULL DEFAULT 1,
+          pills_per_blister integer NOT NULL DEFAULT 1,
+          loose_tablets integer NOT NULL DEFAULT 0,
+          pill_weight_mg integer,
+          usage_json text NOT NULL DEFAULT '[]',
+          every_json text NOT NULL DEFAULT '[]',
+          start_json text NOT NULL DEFAULT '[]',
+          image_url text,
+          expiry_date text,
+          notes text,
+          intake_reminders_enabled integer NOT NULL DEFAULT 0,
+          updated_at integer NOT NULL DEFAULT (strftime('%s','now')),
+          FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+        )
+      `);
+
+      const tables = await client.execute(
+        "SELECT name FROM sqlite_master WHERE type='table' AND name='medications'"
+      );
+      expect(tables.rows).toHaveLength(1);
+    });
+
+    it("should create user_settings table", async () => {
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE,
+          auth_provider text NOT NULL DEFAULT 'local'
+        )
+      `);
+
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS user_settings (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          user_id integer NOT NULL UNIQUE,
+          email_enabled integer NOT NULL DEFAULT 0,
+          notification_email text,
+          email_stock_reminders integer NOT NULL DEFAULT 1,
+          email_intake_reminders integer NOT NULL DEFAULT 1,
+          shoutrrr_enabled integer NOT NULL DEFAULT 0,
+          shoutrrr_url text,
+          shoutrrr_stock_reminders integer NOT NULL DEFAULT 1,
+          shoutrrr_intake_reminders integer NOT NULL DEFAULT 1,
+          reminder_days_before integer NOT NULL DEFAULT 7,
+          repeat_daily_reminders integer NOT NULL DEFAULT 0,
+          low_stock_days integer NOT NULL DEFAULT 30,
+          normal_stock_days integer NOT NULL DEFAULT 90,
+          high_stock_days integer NOT NULL DEFAULT 180,
+          expiry_warning_days integer NOT NULL DEFAULT 90,
+          language text NOT NULL DEFAULT 'en',
+          stock_calculation_mode text NOT NULL DEFAULT 'automatic',
+          last_auto_email_sent text,
+          last_notification_type text,
+          last_notification_channel text,
+          updated_at integer NOT NULL DEFAULT (strftime('%s','now')),
+          FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+        )
+      `);
+
+      const tables = await client.execute(
+        "SELECT name FROM sqlite_master WHERE type='table' AND name='user_settings'"
+      );
+      expect(tables.rows).toHaveLength(1);
+    });
+
+    it("should create refresh_tokens table", async () => {
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE,
+          auth_provider text NOT NULL DEFAULT 'local'
+        )
+      `);
+
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS refresh_tokens (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          user_id integer NOT NULL,
+          token_id text NOT NULL UNIQUE,
+          expires_at integer NOT NULL,
+          rotated_at integer,
+          revoked integer NOT NULL DEFAULT 0,
+          created_at integer NOT NULL DEFAULT (strftime('%s','now')),
+          FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+        )
+      `);
+
+      const tables = await client.execute(
+        "SELECT name FROM sqlite_master WHERE type='table' AND name='refresh_tokens'"
+      );
+      expect(tables.rows).toHaveLength(1);
+    });
+
+    it("should create share_tokens table", async () => {
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE,
+          auth_provider text NOT NULL DEFAULT 'local'
+        )
+      `);
+
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS share_tokens (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          user_id integer NOT NULL,
+          token text NOT NULL UNIQUE,
+          taken_by text NOT NULL,
+          schedule_days integer NOT NULL DEFAULT 30,
+          created_at integer NOT NULL DEFAULT (strftime('%s','now')),
+          expires_at integer,
+          FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+        )
+      `);
+
+      const tables = await client.execute(
+        "SELECT name FROM sqlite_master WHERE type='table' AND name='share_tokens'"
+      );
+      expect(tables.rows).toHaveLength(1);
+    });
+
+    it("should create dose_tracking table", async () => {
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE,
+          auth_provider text NOT NULL DEFAULT 'local'
+        )
+      `);
+
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS dose_tracking (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          user_id integer NOT NULL,
+          dose_id text NOT NULL,
+          taken_at integer NOT NULL DEFAULT (strftime('%s','now')),
+          marked_by text,
+          FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+        )
+      `);
+
+      const tables = await client.execute(
+        "SELECT name FROM sqlite_master WHERE type='table' AND name='dose_tracking'"
+      );
+      expect(tables.rows).toHaveLength(1);
+    });
+
+    it("should enforce unique constraint on username", async () => {
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE,
+          auth_provider text NOT NULL DEFAULT 'local'
+        )
+      `);
+
+      await client.execute("INSERT INTO users (username) VALUES ('testuser')");
+      
+      await expect(
+        client.execute("INSERT INTO users (username) VALUES ('testuser')")
+      ).rejects.toThrow();
+    });
+
+    it("should enforce unique constraint on refresh token_id", async () => {
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE,
+          auth_provider text NOT NULL DEFAULT 'local'
+        )
+      `);
+      await client.execute("INSERT INTO users (username) VALUES ('testuser')");
+
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS refresh_tokens (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          user_id integer NOT NULL,
+          token_id text NOT NULL UNIQUE,
+          expires_at integer NOT NULL,
+          FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+        )
+      `);
+
+      await client.execute(
+        "INSERT INTO refresh_tokens (user_id, token_id, expires_at) VALUES (1, 'token123', 1735689600)"
+      );
+      
+      await expect(
+        client.execute(
+          "INSERT INTO refresh_tokens (user_id, token_id, expires_at) VALUES (1, 'token123', 1735689600)"
+        )
+      ).rejects.toThrow();
+    });
+  });
+
+  describe("Default Values", () => {
+    let client: ReturnType<typeof createClient>;
+
+    beforeEach(async () => {
+      client = createClient({ url: ":memory:" });
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE,
+          auth_provider text NOT NULL DEFAULT 'local',
+          is_active integer NOT NULL DEFAULT 1,
+          created_at integer NOT NULL DEFAULT (strftime('%s','now'))
+        )
+      `);
+    });
+
+    it("should use default values for auth_provider", async () => {
+      await client.execute("INSERT INTO users (username) VALUES ('testuser')");
+      
+      const result = await client.execute("SELECT auth_provider FROM users WHERE username = 'testuser'");
+      expect(result.rows[0].auth_provider).toBe("local");
+    });
+
+    it("should use default values for is_active", async () => {
+      await client.execute("INSERT INTO users (username) VALUES ('testuser')");
+      
+      const result = await client.execute("SELECT is_active FROM users WHERE username = 'testuser'");
+      expect(result.rows[0].is_active).toBe(1);
+    });
+
+    it("should generate created_at timestamp", async () => {
+      await client.execute("INSERT INTO users (username) VALUES ('testuser')");
+      
+      const result = await client.execute("SELECT created_at FROM users WHERE username = 'testuser'");
+      expect(typeof result.rows[0].created_at).toBe("number");
+      // Should be a reasonable Unix timestamp (after year 2020)
+      expect(Number(result.rows[0].created_at)).toBeGreaterThan(1577836800);
+    });
+  });
+
+  describe("User Settings Defaults", () => {
+    let client: ReturnType<typeof createClient>;
+
+    beforeEach(async () => {
+      client = createClient({ url: ":memory:" });
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE,
+          auth_provider text NOT NULL DEFAULT 'local'
+        )
+      `);
+      await client.execute("INSERT INTO users (username) VALUES ('testuser')");
+
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS user_settings (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          user_id integer NOT NULL UNIQUE,
+          email_enabled integer NOT NULL DEFAULT 0,
+          shoutrrr_enabled integer NOT NULL DEFAULT 0,
+          reminder_days_before integer NOT NULL DEFAULT 7,
+          repeat_daily_reminders integer NOT NULL DEFAULT 0,
+          low_stock_days integer NOT NULL DEFAULT 30,
+          normal_stock_days integer NOT NULL DEFAULT 90,
+          high_stock_days integer NOT NULL DEFAULT 180,
+          expiry_warning_days integer NOT NULL DEFAULT 90,
+          language text NOT NULL DEFAULT 'en',
+          stock_calculation_mode text NOT NULL DEFAULT 'automatic',
+          FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+        )
+      `);
+    });
+
+    it("should use default notification settings", async () => {
+      await client.execute("INSERT INTO user_settings (user_id) VALUES (1)");
+      
+      const result = await client.execute("SELECT * FROM user_settings WHERE user_id = 1");
+      expect(result.rows[0].email_enabled).toBe(0);
+      expect(result.rows[0].shoutrrr_enabled).toBe(0);
+    });
+
+    it("should use default stock threshold settings", async () => {
+      await client.execute("INSERT INTO user_settings (user_id) VALUES (1)");
+      
+      const result = await client.execute("SELECT * FROM user_settings WHERE user_id = 1");
+      expect(result.rows[0].low_stock_days).toBe(30);
+      expect(result.rows[0].normal_stock_days).toBe(90);
+      expect(result.rows[0].high_stock_days).toBe(180);
+      expect(result.rows[0].expiry_warning_days).toBe(90);
+    });
+
+    it("should use default language (en)", async () => {
+      await client.execute("INSERT INTO user_settings (user_id) VALUES (1)");
+      
+      const result = await client.execute("SELECT language FROM user_settings WHERE user_id = 1");
+      expect(result.rows[0].language).toBe("en");
+    });
+
+    it("should use default stock_calculation_mode (automatic)", async () => {
+      await client.execute("INSERT INTO user_settings (user_id) VALUES (1)");
+      
+      const result = await client.execute("SELECT stock_calculation_mode FROM user_settings WHERE user_id = 1");
+      expect(result.rows[0].stock_calculation_mode).toBe("automatic");
+    });
+
+    it("should use default reminder_days_before (7)", async () => {
+      await client.execute("INSERT INTO user_settings (user_id) VALUES (1)");
+      
+      const result = await client.execute("SELECT reminder_days_before FROM user_settings WHERE user_id = 1");
+      expect(result.rows[0].reminder_days_before).toBe(7);
+    });
+  });
+
+  describe("Medication Defaults", () => {
+    let client: ReturnType<typeof createClient>;
+
+    beforeEach(async () => {
+      client = createClient({ url: ":memory:" });
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE,
+          auth_provider text NOT NULL DEFAULT 'local'
+        )
+      `);
+      await client.execute("INSERT INTO users (username) VALUES ('testuser')");
+
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS medications (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          user_id integer NOT NULL,
+          name text NOT NULL,
+          taken_by_json text NOT NULL DEFAULT '[]',
+          pack_count integer NOT NULL DEFAULT 1,
+          blisters_per_pack integer NOT NULL DEFAULT 1,
+          pills_per_blister integer NOT NULL DEFAULT 1,
+          loose_tablets integer NOT NULL DEFAULT 0,
+          usage_json text NOT NULL DEFAULT '[]',
+          every_json text NOT NULL DEFAULT '[]',
+          start_json text NOT NULL DEFAULT '[]',
+          intake_reminders_enabled integer NOT NULL DEFAULT 0,
+          FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+        )
+      `);
+    });
+
+    it("should use default inventory values", async () => {
+      await client.execute("INSERT INTO medications (user_id, name) VALUES (1, 'Test Med')");
+      
+      const result = await client.execute("SELECT * FROM medications WHERE name = 'Test Med'");
+      expect(result.rows[0].pack_count).toBe(1);
+      expect(result.rows[0].blisters_per_pack).toBe(1);
+      expect(result.rows[0].pills_per_blister).toBe(1);
+      expect(result.rows[0].loose_tablets).toBe(0);
+    });
+
+    it("should use default JSON arrays for schedules", async () => {
+      await client.execute("INSERT INTO medications (user_id, name) VALUES (1, 'Test Med')");
+      
+      const result = await client.execute("SELECT * FROM medications WHERE name = 'Test Med'");
+      expect(result.rows[0].taken_by_json).toBe("[]");
+      expect(result.rows[0].usage_json).toBe("[]");
+      expect(result.rows[0].every_json).toBe("[]");
+      expect(result.rows[0].start_json).toBe("[]");
+    });
+
+    it("should default intake_reminders_enabled to false (0)", async () => {
+      await client.execute("INSERT INTO medications (user_id, name) VALUES (1, 'Test Med')");
+      
+      const result = await client.execute("SELECT intake_reminders_enabled FROM medications WHERE name = 'Test Med'");
+      expect(result.rows[0].intake_reminders_enabled).toBe(0);
+    });
+  });
+
+  describe("Foreign Key Constraints", () => {
+    let client: ReturnType<typeof createClient>;
+
+    beforeEach(async () => {
+      client = createClient({ url: ":memory:" });
+      // Enable foreign keys
+      await client.execute("PRAGMA foreign_keys = ON");
+      
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE
+        )
+      `);
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS medications (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          user_id integer NOT NULL,
+          name text NOT NULL,
+          FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+        )
+      `);
+    });
+
+    it("should cascade delete medications when user is deleted", async () => {
+      await client.execute("INSERT INTO users (username) VALUES ('testuser')");
+      await client.execute("INSERT INTO medications (user_id, name) VALUES (1, 'Med1')");
+      await client.execute("INSERT INTO medications (user_id, name) VALUES (1, 'Med2')");
+      
+      // Verify medications exist
+      let meds = await client.execute("SELECT * FROM medications");
+      expect(meds.rows).toHaveLength(2);
+      
+      // Delete user
+      await client.execute("DELETE FROM users WHERE id = 1");
+      
+      // Medications should be deleted too
+      meds = await client.execute("SELECT * FROM medications");
+      expect(meds.rows).toHaveLength(0);
+    });
+  });
+
+  describe("Default User Creation (Auth Disabled)", () => {
+    let client: ReturnType<typeof createClient>;
+
+    beforeEach(async () => {
+      client = createClient({ url: ":memory:" });
+      await client.execute(`
+        CREATE TABLE IF NOT EXISTS users (
+          id integer PRIMARY KEY AUTOINCREMENT,
+          username text NOT NULL UNIQUE,
+          auth_provider text NOT NULL DEFAULT 'local'
+        )
+      `);
+    });
+
+    it("should be able to create a default user with ID 1", async () => {
+      // This mimics the auth-disabled mode behavior
+      const result = await client.execute("SELECT id FROM users WHERE id = 1");
+      
+      if (result.rows.length === 0) {
+        await client.execute(
+          "INSERT INTO users (id, username, auth_provider) VALUES (1, 'default', 'local')"
+        );
+      }
+      
+      const user = await client.execute("SELECT * FROM users WHERE id = 1");
+      expect(user.rows).toHaveLength(1);
+      expect(user.rows[0].username).toBe("default");
+      expect(user.rows[0].auth_provider).toBe("local");
+    });
+
+    it("should not duplicate default user if already exists", async () => {
+      await client.execute(
+        "INSERT INTO users (id, username, auth_provider) VALUES (1, 'default', 'local')"
+      );
+      
+      // Check if exists before insert (mimics runtime behavior)
+      const result = await client.execute("SELECT id FROM users WHERE id = 1");
+      
+      if (result.rows.length === 0) {
+        await client.execute(
+          "INSERT INTO users (id, username, auth_provider) VALUES (1, 'default', 'local')"
+        );
+      }
+      
+      // Should still have only one user
+      const users = await client.execute("SELECT * FROM users");
+      expect(users.rows).toHaveLength(1);
+    });
+  });
+});

backend/src/test/doses.test.ts

@@ -0,0 +1,364 @@
+/**
+ * Tests for /doses/taken API endpoints.
+ * Tests marking doses as taken, listing taken doses, and unmarking.
+ */
+import { describe, it, expect, beforeAll, afterAll, beforeEach } from "vitest";
+import {
+  buildTestApp,
+  closeTestApp,
+  clearTestData,
+  createTestUser,
+  createTestMedication,
+  TestContext,
+} from "./setup.js";
+
+// =============================================================================
+// Route Registration
+// Since we can't easily import routes that depend on the global db,
+// we'll create simplified route handlers for testing the core logic.
+// =============================================================================
+
+async function registerDoseRoutes(ctx: TestContext) {
+  const { app, client } = ctx;
+
+  // GET /doses/taken - List all taken doses
+  app.get("/doses/taken", async (request, reply) => {
+    // In test mode, use user ID 1 (will be created in tests)
+    const userId = 1;
+
+    const result = await client.execute({
+      sql: `SELECT dose_id, taken_at, marked_by FROM dose_tracking WHERE user_id = ?`,
+      args: [userId],
+    });
+
+    return {
+      doses: result.rows.map((d) => ({
+        doseId: d.dose_id,
+        takenAt: (d.taken_at as number) * 1000, // Convert to ms
+        markedBy: d.marked_by,
+      })),
+    };
+  });
+
+  // POST /doses/taken - Mark a dose as taken
+  app.post<{ Body: { doseId: string } }>("/doses/taken", async (request, reply) => {
+    const userId = 1;
+    const { doseId } = request.body || {};
+
+    if (!doseId || typeof doseId !== "string" || doseId.length === 0) {
+      return reply.status(400).send({ error: "doseId is required" });
+    }
+
+    // Check if already marked
+    const existing = await client.execute({
+      sql: `SELECT id FROM dose_tracking WHERE user_id = ? AND dose_id = ?`,
+      args: [userId, doseId],
+    });
+
+    if (existing.rows.length > 0) {
+      return { success: true, message: "Already marked" };
+    }
+
+    // Insert new record
+    await client.execute({
+      sql: `INSERT INTO dose_tracking (user_id, dose_id, marked_by) VALUES (?, ?, NULL)`,
+      args: [userId, doseId],
+    });
+
+    return { success: true };
+  });
+
+  // DELETE /doses/taken/:doseId - Unmark a dose
+  app.delete<{ Params: { doseId: string } }>("/doses/taken/:doseId", async (request, reply) => {
+    const userId = 1;
+    const { doseId } = request.params;
+
+    await client.execute({
+      sql: `DELETE FROM dose_tracking WHERE user_id = ? AND dose_id = ?`,
+      args: [userId, doseId],
+    });
+
+    return { success: true };
+  });
+}
+
+// =============================================================================
+// Tests
+// =============================================================================
+
+describe("Dose Tracking API", () => {
+  let ctx: TestContext;
+  let userId: number;
+
+  beforeAll(async () => {
+    ctx = await buildTestApp();
+    await registerDoseRoutes(ctx);
+    await ctx.app.ready();
+  });
+
+  afterAll(async () => {
+    await closeTestApp(ctx);
+  });
+
+  beforeEach(async () => {
+    await clearTestData(ctx.client);
+    // Create test user - will get ID 1 since table is cleared
+    userId = await createTestUser(ctx.client, { username: "testuser" });
+    // Reset SQLite autoincrement so user gets ID 1
+    await ctx.client.execute("DELETE FROM sqlite_sequence WHERE name='users'");
+    await clearTestData(ctx.client);
+    userId = await createTestUser(ctx.client, { username: "testuser" });
+  });
+
+  // ---------------------------------------------------------------------------
+  // POST /doses/taken
+  // ---------------------------------------------------------------------------
+
+  describe("POST /doses/taken", () => {
+    it("should mark a dose as taken", async () => {
+      const doseId = "1-0-1735344000000";
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/doses/taken",
+        payload: { doseId },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true });
+
+      // Verify in database
+      const result = await ctx.client.execute({
+        sql: `SELECT dose_id, marked_by FROM dose_tracking WHERE user_id = ? AND dose_id = ?`,
+        args: [userId, doseId],
+      });
+      expect(result.rows.length).toBe(1);
+      expect(result.rows[0].dose_id).toBe(doseId);
+      expect(result.rows[0].marked_by).toBeNull();
+    });
+
+    it("should return idempotent response when dose already marked", async () => {
+      const doseId = "1-0-1735344000000";
+
+      // Mark once
+      await ctx.app.inject({
+        method: "POST",
+        url: "/doses/taken",
+        payload: { doseId },
+      });
+
+      // Mark again
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/doses/taken",
+        payload: { doseId },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true, message: "Already marked" });
+
+      // Should still only have one record
+      const result = await ctx.client.execute({
+        sql: `SELECT COUNT(*) as count FROM dose_tracking WHERE user_id = ? AND dose_id = ?`,
+        args: [userId, doseId],
+      });
+      expect(result.rows[0].count).toBe(1);
+    });
+
+    it("should reject request without doseId", async () => {
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/doses/taken",
+        payload: {},
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json()).toEqual({ error: "doseId is required" });
+    });
+
+    it("should reject request with empty doseId", async () => {
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/doses/taken",
+        payload: { doseId: "" },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json()).toEqual({ error: "doseId is required" });
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // GET /doses/taken
+  // ---------------------------------------------------------------------------
+
+  describe("GET /doses/taken", () => {
+    it("should return empty array when no doses taken", async () => {
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/doses/taken",
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ doses: [] });
+    });
+
+    it("should return list of taken doses", async () => {
+      const doseId1 = "1-0-1735344000000";
+      const doseId2 = "1-0-1735430400000";
+
+      // Mark two doses
+      await ctx.app.inject({
+        method: "POST",
+        url: "/doses/taken",
+        payload: { doseId: doseId1 },
+      });
+      await ctx.app.inject({
+        method: "POST",
+        url: "/doses/taken",
+        payload: { doseId: doseId2 },
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/doses/taken",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.doses).toHaveLength(2);
+      expect(data.doses.map((d: any) => d.doseId).sort()).toEqual([doseId1, doseId2].sort());
+      // Each dose should have a takenAt timestamp
+      for (const dose of data.doses) {
+        expect(dose.takenAt).toBeTypeOf("number");
+        expect(dose.takenAt).toBeGreaterThan(0);
+        expect(dose.markedBy).toBeNull();
+      }
+    });
+
+    it("should include markedBy when present", async () => {
+      const doseId = "1-0-1735344000000";
+
+      // Insert directly with markedBy
+      await ctx.client.execute({
+        sql: `INSERT INTO dose_tracking (user_id, dose_id, marked_by) VALUES (?, ?, ?)`,
+        args: [userId, doseId, "Daniel"],
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/doses/taken",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.doses).toHaveLength(1);
+      expect(data.doses[0].markedBy).toBe("Daniel");
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // DELETE /doses/taken/:doseId
+  // ---------------------------------------------------------------------------
+
+  describe("DELETE /doses/taken/:doseId", () => {
+    it("should unmark a dose", async () => {
+      const doseId = "1-0-1735344000000";
+
+      // Mark first
+      await ctx.app.inject({
+        method: "POST",
+        url: "/doses/taken",
+        payload: { doseId },
+      });
+
+      // Verify marked
+      let result = await ctx.client.execute({
+        sql: `SELECT COUNT(*) as count FROM dose_tracking WHERE dose_id = ?`,
+        args: [doseId],
+      });
+      expect(result.rows[0].count).toBe(1);
+
+      // Unmark
+      const response = await ctx.app.inject({
+        method: "DELETE",
+        url: `/doses/taken/${encodeURIComponent(doseId)}`,
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true });
+
+      // Verify unmarked
+      result = await ctx.client.execute({
+        sql: `SELECT COUNT(*) as count FROM dose_tracking WHERE dose_id = ?`,
+        args: [doseId],
+      });
+      expect(result.rows[0].count).toBe(0);
+    });
+
+    it("should succeed even if dose was not marked", async () => {
+      const doseId = "nonexistent-dose-id";
+
+      const response = await ctx.app.inject({
+        method: "DELETE",
+        url: `/doses/taken/${encodeURIComponent(doseId)}`,
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true });
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Dose ID Format Tests
+  // ---------------------------------------------------------------------------
+
+  describe("Dose ID Format", () => {
+    it("should handle standard dose ID format: {medId}-{blisterIdx}-{timestamp}", async () => {
+      const doseId = "5-0-1735344000000";
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/doses/taken",
+        payload: { doseId },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true });
+    });
+
+    it("should handle dose ID with person: {medId}-{blisterIdx}-{timestamp}-{person}", async () => {
+      const doseId = "5-0-1735344000000-Daniel";
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/doses/taken",
+        payload: { doseId },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true });
+    });
+
+    it("should handle special characters in dose ID", async () => {
+      // Dose ID with URL-unsafe characters (edge case)
+      const doseId = "5-0-1735344000000-Max Müller";
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/doses/taken",
+        payload: { doseId },
+      });
+
+      expect(response.statusCode).toBe(200);
+
+      // Can retrieve it
+      const getResponse = await ctx.app.inject({
+        method: "GET",
+        url: "/doses/taken",
+      });
+
+      expect(getResponse.json().doses[0].doseId).toBe(doseId);
+    });
+  });
+});

backend/src/test/env.test.ts

@@ -0,0 +1,365 @@
+import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
+import { z } from "zod";
+
+// Mock process.exit to prevent tests from exiting
+const mockExit = vi.fn();
+vi.spyOn(process, "exit").mockImplementation(mockExit as any);
+
+// Re-create the schema from env.ts for testing
+const EnvSchema = z.object({
+  NODE_ENV: z.enum(["development", "production", "test"]).default("production"),
+  PORT: z.string().transform((v) => parseInt(v, 10)).default("3000"),
+  CORS_ORIGINS: z.string().default("http://localhost:5173,http://localhost:4173"),
+  LOG_LEVEL: z.string().default("info"),
+  AUTH_ENABLED: z.string().transform((v) => v === "true").default("false"),
+  REGISTRATION_ENABLED: z.string().transform((v) => v === "true").default("false"),
+  JWT_SECRET: z.string().min(10).optional(),
+  REFRESH_SECRET: z.string().min(10).optional(),
+  COOKIE_SECRET: z.string().min(10).optional(),
+  ACCESS_TOKEN_TTL_MINUTES: z.string().transform((v) => parseInt(v, 10)).default("15"),
+  REFRESH_TOKEN_TTL_DAYS: z.string().transform((v) => parseInt(v, 10)).default("7"),
+  OIDC_ENABLED: z.string().transform((v) => v === "true").default("false"),
+  OIDC_ISSUER_URL: z.string().url().optional(),
+  OIDC_CLIENT_ID: z.string().optional(),
+  OIDC_CLIENT_SECRET: z.string().optional(),
+  OIDC_REDIRECT_URI: z.string().url().optional(),
+  OIDC_SCOPES: z.string().default("openid profile email"),
+  OIDC_AUTO_CREATE_USERS: z.string().transform((v) => v === "true").default("true"),
+  OIDC_USERNAME_CLAIM: z.string().default("preferred_username"),
+  OIDC_PROVIDER_NAME: z.string().default("SSO"),
+});
+
+// Validation functions from env.ts
+function validateAuthSecrets(parsed: z.infer<typeof EnvSchema>): string[] {
+  const missing: string[] = [];
+  if (parsed.AUTH_ENABLED) {
+    if (!parsed.JWT_SECRET) missing.push("JWT_SECRET");
+    if (!parsed.REFRESH_SECRET) missing.push("REFRESH_SECRET");
+    if (!parsed.COOKIE_SECRET) missing.push("COOKIE_SECRET");
+  }
+  return missing;
+}
+
+function validateOidcConfig(parsed: z.infer<typeof EnvSchema>): string[] {
+  const missing: string[] = [];
+  if (parsed.OIDC_ENABLED) {
+    if (!parsed.OIDC_ISSUER_URL) missing.push("OIDC_ISSUER_URL");
+    if (!parsed.OIDC_CLIENT_ID) missing.push("OIDC_CLIENT_ID");
+    if (!parsed.OIDC_CLIENT_SECRET) missing.push("OIDC_CLIENT_SECRET");
+    if (!parsed.OIDC_REDIRECT_URI) missing.push("OIDC_REDIRECT_URI");
+  }
+  return missing;
+}
+
+describe("EnvSchema", () => {
+  describe("default values", () => {
+    it("should use default values when env vars are empty", () => {
+      const result = EnvSchema.parse({});
+      
+      expect(result.NODE_ENV).toBe("production");
+      expect(result.PORT).toBe(3000);
+      expect(result.CORS_ORIGINS).toBe("http://localhost:5173,http://localhost:4173");
+      expect(result.LOG_LEVEL).toBe("info");
+      expect(result.AUTH_ENABLED).toBe(false);
+      expect(result.REGISTRATION_ENABLED).toBe(false);
+      expect(result.ACCESS_TOKEN_TTL_MINUTES).toBe(15);
+      expect(result.REFRESH_TOKEN_TTL_DAYS).toBe(7);
+      expect(result.OIDC_ENABLED).toBe(false);
+      expect(result.OIDC_SCOPES).toBe("openid profile email");
+      expect(result.OIDC_AUTO_CREATE_USERS).toBe(true);
+      expect(result.OIDC_USERNAME_CLAIM).toBe("preferred_username");
+      expect(result.OIDC_PROVIDER_NAME).toBe("SSO");
+    });
+  });
+
+  describe("NODE_ENV validation", () => {
+    it("should accept development", () => {
+      const result = EnvSchema.parse({ NODE_ENV: "development" });
+      expect(result.NODE_ENV).toBe("development");
+    });
+
+    it("should accept production", () => {
+      const result = EnvSchema.parse({ NODE_ENV: "production" });
+      expect(result.NODE_ENV).toBe("production");
+    });
+
+    it("should accept test", () => {
+      const result = EnvSchema.parse({ NODE_ENV: "test" });
+      expect(result.NODE_ENV).toBe("test");
+    });
+
+    it("should reject invalid NODE_ENV values", () => {
+      expect(() => EnvSchema.parse({ NODE_ENV: "staging" })).toThrow();
+      expect(() => EnvSchema.parse({ NODE_ENV: "invalid" })).toThrow();
+    });
+  });
+
+  describe("PORT transformation", () => {
+    it("should transform string PORT to number", () => {
+      const result = EnvSchema.parse({ PORT: "8080" });
+      expect(result.PORT).toBe(8080);
+    });
+
+    it("should use default port when not provided", () => {
+      const result = EnvSchema.parse({});
+      expect(result.PORT).toBe(3000);
+    });
+  });
+
+  describe("boolean transformations", () => {
+    it("should transform AUTH_ENABLED=true to boolean true", () => {
+      const result = EnvSchema.parse({ AUTH_ENABLED: "true" });
+      expect(result.AUTH_ENABLED).toBe(true);
+    });
+
+    it("should transform AUTH_ENABLED=false to boolean false", () => {
+      const result = EnvSchema.parse({ AUTH_ENABLED: "false" });
+      expect(result.AUTH_ENABLED).toBe(false);
+    });
+
+    it("should treat non-true string as false", () => {
+      const result = EnvSchema.parse({ AUTH_ENABLED: "yes" });
+      expect(result.AUTH_ENABLED).toBe(false);
+    });
+
+    it("should transform REGISTRATION_ENABLED correctly", () => {
+      expect(EnvSchema.parse({ REGISTRATION_ENABLED: "true" }).REGISTRATION_ENABLED).toBe(true);
+      expect(EnvSchema.parse({ REGISTRATION_ENABLED: "false" }).REGISTRATION_ENABLED).toBe(false);
+    });
+
+    it("should transform OIDC_ENABLED correctly", () => {
+      expect(EnvSchema.parse({ OIDC_ENABLED: "true" }).OIDC_ENABLED).toBe(true);
+      expect(EnvSchema.parse({ OIDC_ENABLED: "false" }).OIDC_ENABLED).toBe(false);
+    });
+
+    it("should transform OIDC_AUTO_CREATE_USERS correctly", () => {
+      expect(EnvSchema.parse({ OIDC_AUTO_CREATE_USERS: "true" }).OIDC_AUTO_CREATE_USERS).toBe(true);
+      expect(EnvSchema.parse({ OIDC_AUTO_CREATE_USERS: "false" }).OIDC_AUTO_CREATE_USERS).toBe(false);
+    });
+  });
+
+  describe("JWT secret validation", () => {
+    it("should accept JWT_SECRET with 10+ characters", () => {
+      const result = EnvSchema.parse({ JWT_SECRET: "1234567890" });
+      expect(result.JWT_SECRET).toBe("1234567890");
+    });
+
+    it("should reject JWT_SECRET with less than 10 characters", () => {
+      expect(() => EnvSchema.parse({ JWT_SECRET: "123456789" })).toThrow();
+    });
+
+    it("should allow optional JWT_SECRET", () => {
+      const result = EnvSchema.parse({});
+      expect(result.JWT_SECRET).toBeUndefined();
+    });
+  });
+
+  describe("TTL transformations", () => {
+    it("should transform ACCESS_TOKEN_TTL_MINUTES to number", () => {
+      const result = EnvSchema.parse({ ACCESS_TOKEN_TTL_MINUTES: "30" });
+      expect(result.ACCESS_TOKEN_TTL_MINUTES).toBe(30);
+    });
+
+    it("should transform REFRESH_TOKEN_TTL_DAYS to number", () => {
+      const result = EnvSchema.parse({ REFRESH_TOKEN_TTL_DAYS: "14" });
+      expect(result.REFRESH_TOKEN_TTL_DAYS).toBe(14);
+    });
+  });
+
+  describe("OIDC URL validation", () => {
+    it("should accept valid OIDC_ISSUER_URL", () => {
+      const result = EnvSchema.parse({ OIDC_ISSUER_URL: "https://auth.example.com" });
+      expect(result.OIDC_ISSUER_URL).toBe("https://auth.example.com");
+    });
+
+    it("should reject invalid OIDC_ISSUER_URL", () => {
+      expect(() => EnvSchema.parse({ OIDC_ISSUER_URL: "not-a-url" })).toThrow();
+    });
+
+    it("should accept valid OIDC_REDIRECT_URI", () => {
+      const result = EnvSchema.parse({ OIDC_REDIRECT_URI: "https://app.example.com/callback" });
+      expect(result.OIDC_REDIRECT_URI).toBe("https://app.example.com/callback");
+    });
+
+    it("should reject invalid OIDC_REDIRECT_URI", () => {
+      expect(() => EnvSchema.parse({ OIDC_REDIRECT_URI: "invalid" })).toThrow();
+    });
+  });
+
+  describe("CORS_ORIGINS parsing", () => {
+    it("should accept comma-separated origins", () => {
+      const result = EnvSchema.parse({ CORS_ORIGINS: "http://a.com,http://b.com" });
+      expect(result.CORS_ORIGINS).toBe("http://a.com,http://b.com");
+    });
+
+    it("should accept single origin", () => {
+      const result = EnvSchema.parse({ CORS_ORIGINS: "http://localhost:3000" });
+      expect(result.CORS_ORIGINS).toBe("http://localhost:3000");
+    });
+  });
+});
+
+describe("Auth validation", () => {
+  it("should require secrets when AUTH_ENABLED=true", () => {
+    const parsed = EnvSchema.parse({ AUTH_ENABLED: "true" });
+    const missing = validateAuthSecrets(parsed);
+    expect(missing).toContain("JWT_SECRET");
+    expect(missing).toContain("REFRESH_SECRET");
+    expect(missing).toContain("COOKIE_SECRET");
+  });
+
+  it("should not require secrets when AUTH_ENABLED=false", () => {
+    const parsed = EnvSchema.parse({ AUTH_ENABLED: "false" });
+    const missing = validateAuthSecrets(parsed);
+    expect(missing).toHaveLength(0);
+  });
+
+  it("should pass validation with all secrets provided", () => {
+    const parsed = EnvSchema.parse({
+      AUTH_ENABLED: "true",
+      JWT_SECRET: "super-secret-jwt-key-12345",
+      REFRESH_SECRET: "super-secret-refresh-key-12345",
+      COOKIE_SECRET: "super-secret-cookie-key-12345",
+    });
+    const missing = validateAuthSecrets(parsed);
+    expect(missing).toHaveLength(0);
+  });
+
+  it("should identify which specific secrets are missing", () => {
+    const parsed = EnvSchema.parse({
+      AUTH_ENABLED: "true",
+      JWT_SECRET: "super-secret-jwt-key-12345",
+      // REFRESH_SECRET missing
+      COOKIE_SECRET: "super-secret-cookie-key-12345",
+    });
+    const missing = validateAuthSecrets(parsed);
+    expect(missing).toHaveLength(1);
+    expect(missing).toContain("REFRESH_SECRET");
+  });
+});
+
+describe("OIDC validation", () => {
+  it("should require all OIDC settings when OIDC_ENABLED=true", () => {
+    const parsed = EnvSchema.parse({ OIDC_ENABLED: "true" });
+    const missing = validateOidcConfig(parsed);
+    expect(missing).toContain("OIDC_ISSUER_URL");
+    expect(missing).toContain("OIDC_CLIENT_ID");
+    expect(missing).toContain("OIDC_CLIENT_SECRET");
+    expect(missing).toContain("OIDC_REDIRECT_URI");
+  });
+
+  it("should not require OIDC settings when OIDC_ENABLED=false", () => {
+    const parsed = EnvSchema.parse({ OIDC_ENABLED: "false" });
+    const missing = validateOidcConfig(parsed);
+    expect(missing).toHaveLength(0);
+  });
+
+  it("should pass validation with all OIDC settings provided", () => {
+    const parsed = EnvSchema.parse({
+      OIDC_ENABLED: "true",
+      OIDC_ISSUER_URL: "https://auth.example.com",
+      OIDC_CLIENT_ID: "my-client-id",
+      OIDC_CLIENT_SECRET: "my-client-secret",
+      OIDC_REDIRECT_URI: "https://app.example.com/callback",
+    });
+    const missing = validateOidcConfig(parsed);
+    expect(missing).toHaveLength(0);
+  });
+
+  it("should identify which specific OIDC settings are missing", () => {
+    const parsed = EnvSchema.parse({
+      OIDC_ENABLED: "true",
+      OIDC_ISSUER_URL: "https://auth.example.com",
+      OIDC_CLIENT_ID: "my-client-id",
+      // OIDC_CLIENT_SECRET missing
+      // OIDC_REDIRECT_URI missing
+    });
+    const missing = validateOidcConfig(parsed);
+    expect(missing).toHaveLength(2);
+    expect(missing).toContain("OIDC_CLIENT_SECRET");
+    expect(missing).toContain("OIDC_REDIRECT_URI");
+  });
+});
+
+describe("Full configuration scenarios", () => {
+  it("should parse minimal config (auth disabled)", () => {
+    const result = EnvSchema.parse({});
+    expect(result.AUTH_ENABLED).toBe(false);
+    expect(result.OIDC_ENABLED).toBe(false);
+  });
+
+  it("should parse full production config with auth enabled", () => {
+    const env = {
+      NODE_ENV: "production",
+      PORT: "8080",
+      CORS_ORIGINS: "https://myapp.com",
+      LOG_LEVEL: "warn",
+      AUTH_ENABLED: "true",
+      REGISTRATION_ENABLED: "false",
+      JWT_SECRET: "production-jwt-secret-key-12345",
+      REFRESH_SECRET: "production-refresh-secret-key-12345",
+      COOKIE_SECRET: "production-cookie-secret-key-12345",
+      ACCESS_TOKEN_TTL_MINUTES: "30",
+      REFRESH_TOKEN_TTL_DAYS: "14",
+    };
+    
+    const result = EnvSchema.parse(env);
+    
+    expect(result.NODE_ENV).toBe("production");
+    expect(result.PORT).toBe(8080);
+    expect(result.CORS_ORIGINS).toBe("https://myapp.com");
+    expect(result.LOG_LEVEL).toBe("warn");
+    expect(result.AUTH_ENABLED).toBe(true);
+    expect(result.REGISTRATION_ENABLED).toBe(false);
+    expect(result.ACCESS_TOKEN_TTL_MINUTES).toBe(30);
+    expect(result.REFRESH_TOKEN_TTL_DAYS).toBe(14);
+    
+    // Should pass auth validation
+    const missing = validateAuthSecrets(result);
+    expect(missing).toHaveLength(0);
+  });
+
+  it("should parse config with OIDC SSO enabled", () => {
+    const env = {
+      AUTH_ENABLED: "true",
+      JWT_SECRET: "production-jwt-secret-key-12345",
+      REFRESH_SECRET: "production-refresh-secret-key-12345",
+      COOKIE_SECRET: "production-cookie-secret-key-12345",
+      OIDC_ENABLED: "true",
+      OIDC_ISSUER_URL: "https://authelia.example.com",
+      OIDC_CLIENT_ID: "medassist",
+      OIDC_CLIENT_SECRET: "super-secret-oidc-secret",
+      OIDC_REDIRECT_URI: "https://medassist.example.com/api/auth/oidc/callback",
+      OIDC_SCOPES: "openid profile email groups",
+      OIDC_USERNAME_CLAIM: "email",
+      OIDC_PROVIDER_NAME: "Authelia",
+    };
+    
+    const result = EnvSchema.parse(env);
+    
+    expect(result.OIDC_ENABLED).toBe(true);
+    expect(result.OIDC_ISSUER_URL).toBe("https://authelia.example.com");
+    expect(result.OIDC_SCOPES).toBe("openid profile email groups");
+    expect(result.OIDC_USERNAME_CLAIM).toBe("email");
+    expect(result.OIDC_PROVIDER_NAME).toBe("Authelia");
+    
+    // Should pass both validations
+    expect(validateAuthSecrets(result)).toHaveLength(0);
+    expect(validateOidcConfig(result)).toHaveLength(0);
+  });
+
+  it("should parse development config", () => {
+    const env = {
+      NODE_ENV: "development",
+      PORT: "3000",
+      LOG_LEVEL: "debug",
+      AUTH_ENABLED: "false",
+    };
+    
+    const result = EnvSchema.parse(env);
+    
+    expect(result.NODE_ENV).toBe("development");
+    expect(result.LOG_LEVEL).toBe("debug");
+    expect(result.AUTH_ENABLED).toBe(false);
+  });
+});

backend/src/test/export.test.ts

@@ -0,0 +1,851 @@
+/**
+ * Tests for /export and /import API endpoints.
+ * Tests export/import functionality with schema-independent format.
+ */
+import { describe, it, expect, beforeAll, afterAll, beforeEach } from "vitest";
+import {
+  buildTestApp,
+  closeTestApp,
+  clearTestData,
+  createTestUser,
+  createTestMedication,
+  TestContext,
+} from "./setup.js";
+import { randomBytes } from "crypto";
+
+// =============================================================================
+// Route Registration (simplified test routes)
+// =============================================================================
+
+async function registerExportRoutes(ctx: TestContext) {
+  const { app, client } = ctx;
+  const userId = 1; // Test user ID
+
+  // Helper to parse blisters from DB
+  function parseBlisters(row: any): Array<{ usage: number; every: number; start: string; remind: boolean }> {
+    const usage = JSON.parse(row.usage_json || "[]") as number[];
+    const every = JSON.parse(row.every_json || "[]") as number[];
+    const start = JSON.parse(row.start_json || "[]") as string[];
+    const len = Math.min(usage.length, every.length, start.length);
+    return Array.from({ length: len }, (_, i) => ({
+      usage: usage[i],
+      every: every[i],
+      start: start[i],
+      remind: Boolean(row.intake_reminders_enabled),
+    }));
+  }
+
+  // GET /export
+  app.get<{ Querystring: { includeSensitive?: string } }>("/export", async (request, reply) => {
+    const includeSensitive = request.query.includeSensitive === "true";
+
+    // Load medications
+    const medsResult = await client.execute({
+      sql: `SELECT * FROM medications WHERE user_id = ? ORDER BY id`,
+      args: [userId],
+    });
+
+    const medIdToExportId = new Map<number, string>();
+    const medications = medsResult.rows.map((m, i) => {
+      const exportId = `med-${i + 1}`;
+      medIdToExportId.set(m.id as number, exportId);
+      return {
+        _exportId: exportId,
+        name: m.name,
+        genericName: m.generic_name,
+        takenBy: JSON.parse((m.taken_by_json as string) || "[]"),
+        inventory: {
+          packCount: m.pack_count ?? 1,
+          blistersPerPack: m.blisters_per_pack ?? 1,
+          pillsPerBlister: m.pills_per_blister ?? 1,
+          looseTablets: m.loose_tablets ?? 0,
+        },
+        pillWeightMg: m.pill_weight_mg,
+        schedules: parseBlisters(m),
+        expiryDate: m.expiry_date,
+        notes: m.notes,
+        intakeRemindersEnabled: Boolean(m.intake_reminders_enabled),
+        image: null, // Skip images in test
+      };
+    });
+
+    // Load dose tracking
+    const dosesResult = await client.execute({
+      sql: `SELECT * FROM dose_tracking WHERE user_id = ?`,
+      args: [userId],
+    });
+
+    const doseHistory = dosesResult.rows
+      .map((d) => {
+        const parts = (d.dose_id as string).split("-");
+        if (parts.length < 3) return null;
+        const medId = parseInt(parts[0], 10);
+        const exportId = medIdToExportId.get(medId);
+        if (!exportId) return null;
+        return {
+          medicationRef: exportId,
+          scheduleIndex: parseInt(parts[1], 10),
+          scheduledTime: new Date(parseInt(parts[2], 10)).toISOString(),
+          takenAt: d.taken_at ? new Date(d.taken_at as number * 1000).toISOString() : new Date().toISOString(),
+          markedBy: d.marked_by,
+        };
+      })
+      .filter(Boolean);
+
+    // Load settings
+    const settingsResult = await client.execute({
+      sql: `SELECT * FROM user_settings WHERE user_id = ?`,
+      args: [userId],
+    });
+
+    let settings = undefined;
+    if (settingsResult.rows.length > 0) {
+      const s = settingsResult.rows[0];
+      settings = {
+        emailEnabled: Boolean(s.email_enabled),
+        notificationEmail: s.notification_email,
+        emailStockReminders: Boolean(s.email_stock_reminders ?? 1),
+        emailIntakeReminders: Boolean(s.email_intake_reminders ?? 1),
+        shoutrrrEnabled: includeSensitive ? Boolean(s.shoutrrr_enabled) : undefined,
+        shoutrrrUrl: includeSensitive ? s.shoutrrr_url : undefined,
+        shoutrrrStockReminders: Boolean(s.shoutrrr_stock_reminders ?? 1),
+        shoutrrrIntakeReminders: Boolean(s.shoutrrr_intake_reminders ?? 1),
+        reminderDaysBefore: s.reminder_days_before ?? 7,
+        repeatDailyReminders: Boolean(s.repeat_daily_reminders),
+        skipRemindersForTakenDoses: Boolean(s.skip_reminders_for_taken_doses),
+        repeatRemindersEnabled: Boolean(s.repeat_reminders_enabled),
+        reminderRepeatIntervalMinutes: s.reminder_repeat_interval_minutes ?? 30,
+        maxNaggingReminders: s.max_nagging_reminders ?? 5,
+        lowStockDays: s.low_stock_days ?? 30,
+        normalStockDays: s.normal_stock_days ?? 90,
+        highStockDays: s.high_stock_days ?? 180,
+        language: s.language ?? "en",
+        stockCalculationMode: s.stock_calculation_mode ?? "automatic",
+      };
+    }
+
+    // Load share links
+    const sharesResult = await client.execute({
+      sql: `SELECT * FROM share_tokens WHERE user_id = ?`,
+      args: [userId],
+    });
+
+    const shareLinks = sharesResult.rows.map((s) => ({
+      takenBy: s.taken_by,
+      scheduleDays: s.schedule_days ?? 30,
+      expiresAt: s.expires_at ? new Date(s.expires_at as number * 1000).toISOString() : null,
+      regenerateToken: true,
+    }));
+
+    return {
+      version: "1.0",
+      exportedAt: new Date().toISOString(),
+      includeSensitiveData: includeSensitive,
+      medications,
+      doseHistory,
+      settings,
+      shareLinks,
+    };
+  });
+
+  // POST /import
+  app.post<{ Body: any }>("/import", async (request, reply) => {
+    const importData = request.body as any;
+
+    // Basic validation
+    if (!importData.version) {
+      return reply.status(400).send({ error: "Invalid import data format" });
+    }
+
+    // Delete existing data
+    await client.execute({ sql: `DELETE FROM dose_tracking WHERE user_id = ?`, args: [userId] });
+    await client.execute({ sql: `DELETE FROM share_tokens WHERE user_id = ?`, args: [userId] });
+    await client.execute({ sql: `DELETE FROM medications WHERE user_id = ?`, args: [userId] });
+    await client.execute({ sql: `DELETE FROM user_settings WHERE user_id = ?`, args: [userId] });
+
+    // Import medications
+    const exportIdToNewId = new Map<string, number>();
+    for (const med of importData.medications || []) {
+      const usageJson = JSON.stringify((med.schedules || []).map((s: any) => s.usage));
+      const everyJson = JSON.stringify((med.schedules || []).map((s: any) => s.every));
+      const startJson = JSON.stringify((med.schedules || []).map((s: any) => s.start));
+      const takenByJson = JSON.stringify(med.takenBy || []);
+
+      const result = await client.execute({
+        sql: `INSERT INTO medications (
+          user_id, name, generic_name, taken_by_json,
+          pack_count, blisters_per_pack, pills_per_blister, loose_tablets,
+          pill_weight_mg, expiry_date, notes, intake_reminders_enabled,
+          usage_json, every_json, start_json
+        ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) RETURNING id`,
+        args: [
+          userId,
+          med.name,
+          med.genericName || null,
+          takenByJson,
+          med.inventory?.packCount ?? 1,
+          med.inventory?.blistersPerPack ?? 1,
+          med.inventory?.pillsPerBlister ?? 1,
+          med.inventory?.looseTablets ?? 0,
+          med.pillWeightMg ?? null,
+          med.expiryDate || null,
+          med.notes || null,
+          med.intakeRemindersEnabled ? 1 : 0,
+          usageJson,
+          everyJson,
+          startJson,
+        ],
+      });
+
+      exportIdToNewId.set(med._exportId, result.rows[0].id as number);
+    }
+
+    // Import dose history
+    for (const dose of importData.doseHistory || []) {
+      const newMedId = exportIdToNewId.get(dose.medicationRef);
+      if (!newMedId) continue;
+
+      const timestampMs = new Date(dose.scheduledTime).getTime();
+      const doseId = `${newMedId}-${dose.scheduleIndex}-${timestampMs}`;
+
+      await client.execute({
+        sql: `INSERT INTO dose_tracking (user_id, dose_id, taken_at, marked_by) VALUES (?, ?, ?, ?)`,
+        args: [
+          userId,
+          doseId,
+          Math.floor(new Date(dose.takenAt).getTime() / 1000),
+          dose.markedBy || null,
+        ],
+      });
+    }
+
+    // Import settings
+    if (importData.settings) {
+      const s = importData.settings;
+      await client.execute({
+        sql: `INSERT INTO user_settings (
+          user_id, email_enabled, notification_email,
+          email_stock_reminders, email_intake_reminders,
+          shoutrrr_enabled, shoutrrr_url,
+          shoutrrr_stock_reminders, shoutrrr_intake_reminders,
+          reminder_days_before, repeat_daily_reminders,
+          skip_reminders_for_taken_doses, repeat_reminders_enabled,
+          reminder_repeat_interval_minutes, max_nagging_reminders,
+          low_stock_days, normal_stock_days, high_stock_days,
+          language, stock_calculation_mode
+        ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+        args: [
+          userId,
+          s.emailEnabled ? 1 : 0,
+          s.notificationEmail || null,
+          s.emailStockReminders ?? 1,
+          s.emailIntakeReminders ?? 1,
+          s.shoutrrrEnabled ? 1 : 0,
+          s.shoutrrrUrl || null,
+          s.shoutrrrStockReminders ?? 1,
+          s.shoutrrrIntakeReminders ?? 1,
+          s.reminderDaysBefore ?? 7,
+          s.repeatDailyReminders ? 1 : 0,
+          s.skipRemindersForTakenDoses ? 1 : 0,
+          s.repeatRemindersEnabled ? 1 : 0,
+          s.reminderRepeatIntervalMinutes ?? 30,
+          s.maxNaggingReminders ?? 5,
+          s.lowStockDays ?? 30,
+          s.normalStockDays ?? 90,
+          s.highStockDays ?? 180,
+          s.language ?? "en",
+          s.stockCalculationMode ?? "automatic",
+        ],
+      });
+    }
+
+    // Import share links
+    for (const share of importData.shareLinks || []) {
+      const token = randomBytes(8).toString("hex");
+      await client.execute({
+        sql: `INSERT INTO share_tokens (user_id, token, taken_by, schedule_days, expires_at) VALUES (?, ?, ?, ?, ?)`,
+        args: [
+          userId,
+          token,
+          share.takenBy,
+          share.scheduleDays ?? 30,
+          share.expiresAt ? Math.floor(new Date(share.expiresAt).getTime() / 1000) : null,
+        ],
+      });
+    }
+
+    return {
+      success: true,
+      imported: {
+        medications: (importData.medications || []).length,
+        doseHistory: (importData.doseHistory || []).length,
+        settings: importData.settings ? 1 : 0,
+        shareLinks: (importData.shareLinks || []).length,
+      },
+    };
+  });
+}
+
+// =============================================================================
+// Tests
+// =============================================================================
+
+describe("Export/Import API", () => {
+  let ctx: TestContext;
+  let userId: number;
+
+  beforeAll(async () => {
+    ctx = await buildTestApp();
+    await registerExportRoutes(ctx);
+    await ctx.app.ready();
+  });
+
+  afterAll(async () => {
+    await closeTestApp(ctx);
+  });
+
+  beforeEach(async () => {
+    await clearTestData(ctx.client);
+    await ctx.client.execute("DELETE FROM sqlite_sequence WHERE name='users'");
+    await ctx.client.execute("DELETE FROM sqlite_sequence WHERE name='medications'");
+    userId = await createTestUser(ctx.client, { username: "testuser" });
+  });
+
+  // ---------------------------------------------------------------------------
+  // GET /export
+  // ---------------------------------------------------------------------------
+
+  describe("GET /export", () => {
+    it("should export empty data for new user", async () => {
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/export",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.version).toBe("1.0");
+      expect(data.exportedAt).toBeDefined();
+      expect(data.medications).toEqual([]);
+      expect(data.doseHistory).toEqual([]);
+      expect(data.shareLinks).toEqual([]);
+    });
+
+    it("should export medications with correct format", async () => {
+      const startDate = "2025-01-15T08:00:00.000Z";
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Aspirin",
+        genericName: "Acetylsalicylic acid",
+        takenBy: ["Daniel", "Maria"],
+        packCount: 2,
+        blistersPerPack: 3,
+        pillsPerBlister: 10,
+        looseTablets: 5,
+        pillWeightMg: 500,
+        expiryDate: "2027-06-30",
+        notes: "Take with food",
+        intakeRemindersEnabled: true,
+        blisters: [
+          { usage: 1, every: 1, start: startDate },
+          { usage: 0.5, every: 7, start: startDate },
+        ],
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/export",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.medications).toHaveLength(1);
+
+      const med = data.medications[0];
+      expect(med._exportId).toBe("med-1");
+      expect(med.name).toBe("Aspirin");
+      expect(med.genericName).toBe("Acetylsalicylic acid");
+      expect(med.takenBy).toEqual(["Daniel", "Maria"]);
+      expect(med.inventory).toEqual({
+        packCount: 2,
+        blistersPerPack: 3,
+        pillsPerBlister: 10,
+        looseTablets: 5,
+      });
+      expect(med.pillWeightMg).toBe(500);
+      expect(med.expiryDate).toBe("2027-06-30");
+      expect(med.notes).toBe("Take with food");
+      expect(med.intakeRemindersEnabled).toBe(true);
+      expect(med.schedules).toHaveLength(2);
+      expect(med.schedules[0]).toEqual({
+        usage: 1,
+        every: 1,
+        start: startDate,
+        remind: true,
+      });
+    });
+
+    it("should export settings", async () => {
+      // Create settings
+      await ctx.client.execute({
+        sql: `INSERT INTO user_settings (
+          user_id, email_enabled, notification_email, language, low_stock_days
+        ) VALUES (?, 1, 'test@example.com', 'de', 14)`,
+        args: [userId],
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/export",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.settings).toBeDefined();
+      expect(data.settings.emailEnabled).toBe(true);
+      expect(data.settings.notificationEmail).toBe("test@example.com");
+      expect(data.settings.language).toBe("de");
+      expect(data.settings.lowStockDays).toBe(14);
+    });
+
+    it("should exclude sensitive data by default", async () => {
+      await ctx.client.execute({
+        sql: `INSERT INTO user_settings (
+          user_id, shoutrrr_enabled, shoutrrr_url
+        ) VALUES (?, 1, 'ntfy://user:pass@ntfy.sh/topic')`,
+        args: [userId],
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/export",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.includeSensitiveData).toBe(false);
+      expect(data.settings.shoutrrrEnabled).toBeUndefined();
+      expect(data.settings.shoutrrrUrl).toBeUndefined();
+    });
+
+    it("should include sensitive data when requested", async () => {
+      await ctx.client.execute({
+        sql: `INSERT INTO user_settings (
+          user_id, shoutrrr_enabled, shoutrrr_url
+        ) VALUES (?, 1, 'ntfy://user:pass@ntfy.sh/topic')`,
+        args: [userId],
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/export?includeSensitive=true",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.includeSensitiveData).toBe(true);
+      expect(data.settings.shoutrrrEnabled).toBe(true);
+      expect(data.settings.shoutrrrUrl).toBe("ntfy://user:pass@ntfy.sh/topic");
+    });
+
+    it("should export dose history with medication references", async () => {
+      const medId = await createTestMedication(ctx.client, {
+        userId,
+        name: "Test Med",
+      });
+
+      // Create dose tracking entry
+      const timestampMs = Date.now();
+      const doseId = `${medId}-0-${timestampMs}`;
+      await ctx.client.execute({
+        sql: `INSERT INTO dose_tracking (user_id, dose_id, taken_at) VALUES (?, ?, ?)`,
+        args: [userId, doseId, Math.floor(Date.now() / 1000)],
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/export",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.doseHistory).toHaveLength(1);
+      expect(data.doseHistory[0].medicationRef).toBe("med-1");
+      expect(data.doseHistory[0].scheduleIndex).toBe(0);
+      expect(data.doseHistory[0].scheduledTime).toBeDefined();
+      expect(data.doseHistory[0].takenAt).toBeDefined();
+    });
+
+    it("should export share links", async () => {
+      await ctx.client.execute({
+        sql: `INSERT INTO share_tokens (user_id, token, taken_by, schedule_days) VALUES (?, ?, ?, ?)`,
+        args: [userId, "abc123", "Daniel", 30],
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/export",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.shareLinks).toHaveLength(1);
+      expect(data.shareLinks[0].takenBy).toBe("Daniel");
+      expect(data.shareLinks[0].scheduleDays).toBe(30);
+      expect(data.shareLinks[0].regenerateToken).toBe(true);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // POST /import
+  // ---------------------------------------------------------------------------
+
+  describe("POST /import", () => {
+    it("should import medications", async () => {
+      const importData = {
+        version: "1.0",
+        exportedAt: new Date().toISOString(),
+        medications: [
+          {
+            _exportId: "med-1",
+            name: "Imported Med",
+            genericName: "Generic",
+            takenBy: ["Alice"],
+            inventory: {
+              packCount: 2,
+              blistersPerPack: 3,
+              pillsPerBlister: 10,
+              looseTablets: 5,
+            },
+            pillWeightMg: 250,
+            schedules: [
+              { usage: 1, every: 1, start: "2025-01-15T08:00:00.000Z", remind: true },
+            ],
+            expiryDate: "2027-12-31",
+            notes: "Test notes",
+            intakeRemindersEnabled: true,
+          },
+        ],
+        doseHistory: [],
+        shareLinks: [],
+      };
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/import",
+        payload: importData,
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json().success).toBe(true);
+      expect(response.json().imported.medications).toBe(1);
+
+      // Verify in database
+      const result = await ctx.client.execute({
+        sql: `SELECT * FROM medications WHERE user_id = ?`,
+        args: [userId],
+      });
+      expect(result.rows).toHaveLength(1);
+      expect(result.rows[0].name).toBe("Imported Med");
+      expect(result.rows[0].generic_name).toBe("Generic");
+      expect(result.rows[0].pack_count).toBe(2);
+      expect(result.rows[0].blisters_per_pack).toBe(3);
+      expect(result.rows[0].pills_per_blister).toBe(10);
+      expect(result.rows[0].loose_tablets).toBe(5);
+    });
+
+    it("should replace existing data on import", async () => {
+      // Create existing medication
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Existing Med",
+      });
+
+      const importData = {
+        version: "1.0",
+        exportedAt: new Date().toISOString(),
+        medications: [
+          {
+            _exportId: "med-1",
+            name: "New Med",
+            schedules: [{ usage: 1, every: 1, start: "2025-01-15T08:00:00.000Z" }],
+          },
+        ],
+        doseHistory: [],
+        shareLinks: [],
+      };
+
+      await ctx.app.inject({
+        method: "POST",
+        url: "/import",
+        payload: importData,
+      });
+
+      // Verify old med deleted, new one exists
+      const result = await ctx.client.execute({
+        sql: `SELECT * FROM medications WHERE user_id = ?`,
+        args: [userId],
+      });
+      expect(result.rows).toHaveLength(1);
+      expect(result.rows[0].name).toBe("New Med");
+    });
+
+    it("should import dose history with remapped IDs", async () => {
+      const importData = {
+        version: "1.0",
+        exportedAt: new Date().toISOString(),
+        medications: [
+          {
+            _exportId: "med-1",
+            name: "Med 1",
+            schedules: [{ usage: 1, every: 1, start: "2025-01-15T08:00:00.000Z" }],
+          },
+        ],
+        doseHistory: [
+          {
+            medicationRef: "med-1",
+            scheduleIndex: 0,
+            scheduledTime: "2025-01-15T08:00:00.000Z",
+            takenAt: "2025-01-15T08:15:00.000Z",
+            markedBy: null,
+          },
+        ],
+        shareLinks: [],
+      };
+
+      await ctx.app.inject({
+        method: "POST",
+        url: "/import",
+        payload: importData,
+      });
+
+      // Verify dose tracking
+      const doses = await ctx.client.execute({
+        sql: `SELECT * FROM dose_tracking WHERE user_id = ?`,
+        args: [userId],
+      });
+      expect(doses.rows).toHaveLength(1);
+      // Dose ID should contain the NEW medication ID
+      const doseId = doses.rows[0].dose_id as string;
+      expect(doseId).toMatch(/^\d+-0-\d+$/);
+    });
+
+    it("should import settings", async () => {
+      const importData = {
+        version: "1.0",
+        exportedAt: new Date().toISOString(),
+        medications: [],
+        doseHistory: [],
+        settings: {
+          emailEnabled: true,
+          notificationEmail: "imported@example.com",
+          language: "de",
+          lowStockDays: 14,
+          normalStockDays: 60,
+          highStockDays: 120,
+        },
+        shareLinks: [],
+      };
+
+      await ctx.app.inject({
+        method: "POST",
+        url: "/import",
+        payload: importData,
+      });
+
+      // Verify settings
+      const settings = await ctx.client.execute({
+        sql: `SELECT * FROM user_settings WHERE user_id = ?`,
+        args: [userId],
+      });
+      expect(settings.rows).toHaveLength(1);
+      expect(settings.rows[0].email_enabled).toBe(1);
+      expect(settings.rows[0].notification_email).toBe("imported@example.com");
+      expect(settings.rows[0].language).toBe("de");
+      expect(settings.rows[0].low_stock_days).toBe(14);
+    });
+
+    it("should import share links with new tokens", async () => {
+      const importData = {
+        version: "1.0",
+        exportedAt: new Date().toISOString(),
+        medications: [],
+        doseHistory: [],
+        shareLinks: [
+          {
+            takenBy: "Daniel",
+            scheduleDays: 60,
+            regenerateToken: true,
+          },
+        ],
+      };
+
+      await ctx.app.inject({
+        method: "POST",
+        url: "/import",
+        payload: importData,
+      });
+
+      // Verify share token
+      const shares = await ctx.client.execute({
+        sql: `SELECT * FROM share_tokens WHERE user_id = ?`,
+        args: [userId],
+      });
+      expect(shares.rows).toHaveLength(1);
+      expect(shares.rows[0].taken_by).toBe("Daniel");
+      expect(shares.rows[0].schedule_days).toBe(60);
+      expect(shares.rows[0].token).toBeDefined();
+      expect((shares.rows[0].token as string).length).toBe(16); // 8 bytes = 16 hex chars
+    });
+
+    it("should reject invalid import data", async () => {
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/import",
+        payload: { invalid: "data" },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().error).toBe("Invalid import data format");
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Export/Import Roundtrip Tests
+  // ---------------------------------------------------------------------------
+
+  describe("Export/Import Roundtrip", () => {
+    it("should preserve all data through export/import cycle", async () => {
+      // Setup: Create medications, doses, settings, shares
+      const startDate = "2025-01-15T08:00:00.000Z";
+      const medId = await createTestMedication(ctx.client, {
+        userId,
+        name: "Roundtrip Med",
+        genericName: "Generic Name",
+        takenBy: ["Daniel", "Maria"],
+        packCount: 2,
+        blistersPerPack: 3,
+        pillsPerBlister: 10,
+        looseTablets: 5,
+        pillWeightMg: 500,
+        expiryDate: "2027-06-30",
+        notes: "Test notes",
+        intakeRemindersEnabled: true,
+        blisters: [
+          { usage: 1, every: 1, start: startDate },
+          { usage: 0.5, every: 7, start: startDate },
+        ],
+      });
+
+      // Create dose
+      const timestampMs = new Date(startDate).getTime();
+      const doseId = `${medId}-0-${timestampMs}`;
+      await ctx.client.execute({
+        sql: `INSERT INTO dose_tracking (user_id, dose_id, taken_at, marked_by) VALUES (?, ?, ?, ?)`,
+        args: [userId, doseId, Math.floor(Date.now() / 1000), "Daniel"],
+      });
+
+      // Create settings
+      await ctx.client.execute({
+        sql: `INSERT INTO user_settings (user_id, email_enabled, notification_email, language, low_stock_days) VALUES (?, 1, 'test@example.com', 'de', 14)`,
+        args: [userId],
+      });
+
+      // Create share
+      await ctx.client.execute({
+        sql: `INSERT INTO share_tokens (user_id, token, taken_by, schedule_days) VALUES (?, ?, ?, ?)`,
+        args: [userId, "original123", "Daniel", 60],
+      });
+
+      // Export
+      const exportResponse = await ctx.app.inject({
+        method: "GET",
+        url: "/export",
+      });
+      expect(exportResponse.statusCode).toBe(200);
+      const exportData = exportResponse.json();
+
+      // Import (this replaces all data)
+      const importResponse = await ctx.app.inject({
+        method: "POST",
+        url: "/import",
+        payload: exportData,
+      });
+      expect(importResponse.statusCode).toBe(200);
+
+      // Export again and compare
+      const reExportResponse = await ctx.app.inject({
+        method: "GET",
+        url: "/export",
+      });
+      const reExportData = reExportResponse.json();
+
+      // Compare (excluding timestamps and IDs that change)
+      expect(reExportData.medications).toHaveLength(1);
+      expect(reExportData.medications[0].name).toBe("Roundtrip Med");
+      expect(reExportData.medications[0].genericName).toBe("Generic Name");
+      expect(reExportData.medications[0].takenBy).toEqual(["Daniel", "Maria"]);
+      expect(reExportData.medications[0].inventory).toEqual({
+        packCount: 2,
+        blistersPerPack: 3,
+        pillsPerBlister: 10,
+        looseTablets: 5,
+      });
+      expect(reExportData.medications[0].schedules).toHaveLength(2);
+
+      expect(reExportData.doseHistory).toHaveLength(1);
+      expect(reExportData.doseHistory[0].markedBy).toBe("Daniel");
+
+      expect(reExportData.settings.emailEnabled).toBe(true);
+      expect(reExportData.settings.notificationEmail).toBe("test@example.com");
+      expect(reExportData.settings.language).toBe("de");
+
+      expect(reExportData.shareLinks).toHaveLength(1);
+      expect(reExportData.shareLinks[0].takenBy).toBe("Daniel");
+    });
+
+    it("should handle import with different schema (backward compatibility)", async () => {
+      // Simulate import from older version without some fields
+      const importData = {
+        version: "1.0",
+        exportedAt: new Date().toISOString(),
+        medications: [
+          {
+            _exportId: "med-1",
+            name: "Legacy Med",
+            // Missing: genericName, takenBy, pillWeightMg, etc.
+            inventory: {
+              packCount: 1,
+              blistersPerPack: 1,
+              pillsPerBlister: 10,
+              looseTablets: 0,
+            },
+            schedules: [
+              { usage: 1, every: 1, start: "2025-01-15T08:00:00.000Z" },
+            ],
+          },
+        ],
+        doseHistory: [],
+        // Missing: settings, shareLinks
+      };
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/import",
+        payload: importData,
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json().success).toBe(true);
+
+      // Verify defaults were applied
+      const result = await ctx.client.execute({
+        sql: `SELECT * FROM medications WHERE user_id = ?`,
+        args: [userId],
+      });
+      expect(result.rows[0].name).toBe("Legacy Med");
+      expect(result.rows[0].generic_name).toBeNull();
+      expect(result.rows[0].taken_by_json).toBe("[]");
+    });
+  });
+});

backend/src/test/integration.test.ts

@@ -0,0 +1,936 @@
+/**
+ * Integration Tests - Testing interactions between multiple routes/features
+ * These tests verify critical app behavior that spans multiple components.
+ */
+import { describe, it, expect, beforeAll, afterAll, beforeEach, vi } from "vitest";
+import Fastify, { FastifyInstance } from "fastify";
+import cookie from "@fastify/cookie";
+import jwt from "@fastify/jwt";
+import sensible from "@fastify/sensible";
+import fastifyMultipart from "@fastify/multipart";
+import { createClient, Client } from "@libsql/client";
+import { drizzle } from "drizzle-orm/libsql";
+
+// Use vi.hoisted to create the db BEFORE mocks are set up
+const { testClient, testDb } = vi.hoisted(() => {
+  const { createClient } = require("@libsql/client");
+  const { drizzle } = require("drizzle-orm/libsql");
+  const client = createClient({ url: ":memory:" });
+  const db = drizzle(client);
+  return { testClient: client, testDb: db };
+});
+
+// Mock modules
+vi.mock("../db/client.js", () => ({
+  db: testDb,
+  migrationsReady: Promise.resolve(),
+}));
+
+vi.mock("../plugins/env.js", () => ({
+  env: {
+    AUTH_ENABLED: false,
+    NODE_ENV: "test",
+    LOG_LEVEL: "silent",
+    PORT: 3000,
+    CORS_ORIGINS: "*",
+    JWT_SECRET: "test-secret",
+    REFRESH_SECRET: "test-refresh-secret",
+    COOKIE_SECRET: "test-cookie-secret",
+    ACCESS_TOKEN_TTL_MINUTES: 15,
+    REFRESH_TOKEN_TTL_DAYS: 7,
+  },
+}));
+
+vi.mock("../plugins/auth.js", () => ({
+  requireAuth: async () => {},
+  getAnonymousUserId: () => 999999999,
+}));
+
+// Import routes
+const { doseRoutes } = await import("../routes/doses.js");
+const { shareRoutes } = await import("../routes/share.js");
+const { medicationRoutes } = await import("../routes/medications.js");
+const { settingsRoutes } = await import("../routes/settings.js");
+
+// =============================================================================
+// Schema & Setup
+// =============================================================================
+
+async function createSchema(client: Client) {
+  const tables = [
+    `CREATE TABLE IF NOT EXISTS users (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      username text NOT NULL UNIQUE,
+      password_hash text,
+      avatar_url text,
+      auth_provider text NOT NULL DEFAULT 'local',
+      oidc_subject text,
+      is_active integer NOT NULL DEFAULT 1,
+      last_login_at integer,
+      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      updated_at integer NOT NULL DEFAULT (strftime('%s','now'))
+    )`,
+    `CREATE TABLE IF NOT EXISTS medications (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      user_id integer NOT NULL,
+      name text NOT NULL,
+      generic_name text,
+      taken_by_json text NOT NULL DEFAULT '[]',
+      pack_count integer NOT NULL DEFAULT 1,
+      blisters_per_pack integer NOT NULL DEFAULT 1,
+      pills_per_blister integer NOT NULL DEFAULT 1,
+      loose_tablets integer NOT NULL DEFAULT 0,
+      pill_weight_mg integer,
+      usage_json text NOT NULL DEFAULT '[]',
+      every_json text NOT NULL DEFAULT '[]',
+      start_json text NOT NULL DEFAULT '[]',
+      image_url text,
+      expiry_date text,
+      notes text,
+      intake_reminders_enabled integer NOT NULL DEFAULT 0,
+      updated_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+    )`,
+    `CREATE TABLE IF NOT EXISTS user_settings (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      user_id integer NOT NULL UNIQUE,
+      email_enabled integer NOT NULL DEFAULT 0,
+      notification_email text,
+      email_stock_reminders integer NOT NULL DEFAULT 1,
+      email_intake_reminders integer NOT NULL DEFAULT 1,
+      shoutrrr_enabled integer NOT NULL DEFAULT 0,
+      shoutrrr_url text,
+      shoutrrr_stock_reminders integer NOT NULL DEFAULT 1,
+      shoutrrr_intake_reminders integer NOT NULL DEFAULT 1,
+      reminder_days_before integer NOT NULL DEFAULT 7,
+      repeat_daily_reminders integer NOT NULL DEFAULT 0,
+      skip_reminders_for_taken_doses integer NOT NULL DEFAULT 0,
+      repeat_reminders_enabled integer NOT NULL DEFAULT 0,
+      reminder_repeat_interval_minutes integer NOT NULL DEFAULT 30,
+      max_nagging_reminders integer NOT NULL DEFAULT 5,
+      low_stock_days integer NOT NULL DEFAULT 30,
+      normal_stock_days integer NOT NULL DEFAULT 90,
+      high_stock_days integer NOT NULL DEFAULT 180,
+      expiry_warning_days integer NOT NULL DEFAULT 90,
+      language text NOT NULL DEFAULT 'en',
+      stock_calculation_mode text NOT NULL DEFAULT 'automatic',
+      last_auto_email_sent text,
+      last_notification_type text,
+      last_notification_channel text,
+      updated_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+    )`,
+    `CREATE TABLE IF NOT EXISTS share_tokens (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      user_id integer NOT NULL,
+      token text NOT NULL UNIQUE,
+      taken_by text NOT NULL,
+      schedule_days integer NOT NULL DEFAULT 30,
+      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      expires_at integer,
+      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+    )`,
+    `CREATE TABLE IF NOT EXISTS dose_tracking (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      user_id integer NOT NULL,
+      dose_id text NOT NULL,
+      taken_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      marked_by text,
+      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+    )`,
+  ];
+
+  for (const sql of tables) {
+    await client.execute(sql);
+  }
+}
+
+async function clearData(client: Client) {
+  await client.execute("DELETE FROM dose_tracking");
+  await client.execute("DELETE FROM share_tokens");
+  await client.execute("DELETE FROM user_settings");
+  await client.execute("DELETE FROM medications");
+  await client.execute("DELETE FROM users");
+  await client.execute("DELETE FROM sqlite_sequence");
+}
+
+// =============================================================================
+// Tests
+// =============================================================================
+
+describe("Integration Tests", () => {
+  let app: FastifyInstance;
+  const userId = 999999999;
+
+  beforeAll(async () => {
+    await createSchema(testClient);
+
+    app = Fastify({ logger: false });
+    await app.register(sensible);
+    await app.register(cookie, { secret: "test-cookie-secret" });
+    await app.register(jwt, {
+      secret: "test-jwt-secret",
+      cookie: { cookieName: "access_token", signed: false },
+    });
+    await app.register(fastifyMultipart, { limits: { fileSize: 10 * 1024 * 1024 } });
+
+    app.decorate("config", {
+      accessSecret: "test-jwt-secret",
+      refreshSecret: "test-refresh-secret",
+      accessTtl: 15,
+      refreshTtl: 7,
+      cookieOptions: { httpOnly: true, sameSite: "lax", secure: false, path: "/" },
+      refreshCookieOptions: { httpOnly: true, sameSite: "lax", secure: false, path: "/" },
+    });
+
+    await app.register(doseRoutes);
+    await app.register(shareRoutes);
+    await app.register(medicationRoutes);
+    await app.register(settingsRoutes);
+
+    await app.ready();
+  });
+
+  afterAll(async () => {
+    await app.close();
+    testClient.close();
+  });
+
+  beforeEach(async () => {
+    await clearData(testClient);
+    await testClient.execute(
+      "INSERT INTO users (id, username, auth_provider) VALUES (999999999, '__anonymous__', 'anonymous')"
+    );
+  });
+
+  // ---------------------------------------------------------------------------
+  // Medication Update + Dose Tracking Cleanup
+  // ---------------------------------------------------------------------------
+
+  describe("Medication Update cleans up old dose tracking", () => {
+    it("should delete doses before new start date when start date is moved forward", async () => {
+      // Create medication starting Jan 1
+      const createRes = await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Test Med",
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+      const medId = createRes.json().id;
+
+      // Mark some doses (Jan 1, Jan 2, Jan 5, Jan 10)
+      const jan1 = new Date("2025-01-01T08:00:00.000Z").getTime();
+      const jan2 = new Date("2025-01-02T08:00:00.000Z").getTime();
+      const jan5 = new Date("2025-01-05T08:00:00.000Z").getTime();
+      const jan10 = new Date("2025-01-10T08:00:00.000Z").getTime();
+
+      for (const ts of [jan1, jan2, jan5, jan10]) {
+        await app.inject({
+          method: "POST",
+          url: "/doses/taken",
+          payload: { doseId: `${medId}-0-${ts}` },
+        });
+      }
+
+      // Verify 4 doses exist
+      const beforeUpdate = await testClient.execute({
+        sql: `SELECT COUNT(*) as count FROM dose_tracking WHERE dose_id LIKE ?`,
+        args: [`${medId}-%`],
+      });
+      expect(beforeUpdate.rows[0].count).toBe(4);
+
+      // Update medication to start Jan 5 (should delete Jan 1 and Jan 2 doses)
+      await app.inject({
+        method: "PUT",
+        url: `/medications/${medId}`,
+        payload: {
+          name: "Test Med",
+          blisters: [{ usage: 1, every: 1, start: "2025-01-05T08:00:00.000Z" }],
+        },
+      });
+
+      // Verify only 2 doses remain (Jan 5 and Jan 10)
+      const afterUpdate = await testClient.execute({
+        sql: `SELECT dose_id FROM dose_tracking WHERE dose_id LIKE ? ORDER BY dose_id`,
+        args: [`${medId}-%`],
+      });
+      expect(afterUpdate.rows.length).toBe(2);
+      expect(afterUpdate.rows[0].dose_id).toContain(String(jan5));
+      expect(afterUpdate.rows[1].dose_id).toContain(String(jan10));
+    });
+
+    it("should keep all doses when start date is moved backward", async () => {
+      // Create medication starting Jan 10
+      const createRes = await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Test Med",
+          blisters: [{ usage: 1, every: 1, start: "2025-01-10T08:00:00.000Z" }],
+        },
+      });
+      const medId = createRes.json().id;
+
+      // Mark dose on Jan 10
+      const jan10 = new Date("2025-01-10T08:00:00.000Z").getTime();
+      await app.inject({
+        method: "POST",
+        url: "/doses/taken",
+        payload: { doseId: `${medId}-0-${jan10}` },
+      });
+
+      // Update to start Jan 1 (earlier)
+      await app.inject({
+        method: "PUT",
+        url: `/medications/${medId}`,
+        payload: {
+          name: "Test Med",
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      // Dose should still exist
+      const afterUpdate = await testClient.execute({
+        sql: `SELECT COUNT(*) as count FROM dose_tracking WHERE dose_id LIKE ?`,
+        args: [`${medId}-%`],
+      });
+      expect(afterUpdate.rows[0].count).toBe(1);
+    });
+
+    it("should handle multiple blisters with different start dates", async () => {
+      // Create medication with 2 schedules: Jan 1 morning and Jan 5 evening
+      const createRes = await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Test Med",
+          blisters: [
+            { usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" },
+            { usage: 0.5, every: 1, start: "2025-01-05T20:00:00.000Z" },
+          ],
+        },
+      });
+      const medId = createRes.json().id;
+
+      // Mark doses for both schedules
+      const jan1_8am = new Date("2025-01-01T08:00:00.000Z").getTime();
+      const jan3_8am = new Date("2025-01-03T08:00:00.000Z").getTime();
+      const jan5_8pm = new Date("2025-01-05T20:00:00.000Z").getTime();
+      const jan6_8pm = new Date("2025-01-06T20:00:00.000Z").getTime();
+
+      await app.inject({ method: "POST", url: "/doses/taken", payload: { doseId: `${medId}-0-${jan1_8am}` } });
+      await app.inject({ method: "POST", url: "/doses/taken", payload: { doseId: `${medId}-0-${jan3_8am}` } });
+      await app.inject({ method: "POST", url: "/doses/taken", payload: { doseId: `${medId}-1-${jan5_8pm}` } });
+      await app.inject({ method: "POST", url: "/doses/taken", payload: { doseId: `${medId}-1-${jan6_8pm}` } });
+
+      // 4 doses total
+      const before = await testClient.execute({
+        sql: `SELECT COUNT(*) as count FROM dose_tracking WHERE dose_id LIKE ?`,
+        args: [`${medId}-%`],
+      });
+      expect(before.rows[0].count).toBe(4);
+
+      // Update: move first schedule to Jan 4
+      // Earliest start is now Jan 4, so Jan 1 and Jan 3 doses should be deleted
+      await app.inject({
+        method: "PUT",
+        url: `/medications/${medId}`,
+        payload: {
+          name: "Test Med",
+          blisters: [
+            { usage: 1, every: 1, start: "2025-01-04T08:00:00.000Z" },
+            { usage: 0.5, every: 1, start: "2025-01-05T20:00:00.000Z" },
+          ],
+        },
+      });
+
+      // Should have 2 doses left (Jan 5 and Jan 6 evening doses)
+      const after = await testClient.execute({
+        sql: `SELECT dose_id FROM dose_tracking WHERE dose_id LIKE ?`,
+        args: [`${medId}-%`],
+      });
+      expect(after.rows.length).toBe(2);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Share Link + Dose Tracking Integration
+  // ---------------------------------------------------------------------------
+
+  describe("Share links and dose tracking integration", () => {
+    it("should allow marking/unmarking doses via share link with correct markedBy", async () => {
+      // Create medication for Daniel
+      const createRes = await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Aspirin",
+          takenBy: ["Daniel"],
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+      const medId = createRes.json().id;
+
+      // Create share token for Daniel
+      const shareRes = await app.inject({
+        method: "POST",
+        url: "/share",
+        payload: { takenBy: "Daniel", scheduleDays: 30 },
+      });
+      const token = shareRes.json().token;
+
+      // Mark dose via share link
+      const doseId = `${medId}-0-${new Date("2025-01-01T08:00:00.000Z").getTime()}`;
+      await app.inject({
+        method: "POST",
+        url: `/share/${token}/doses`,
+        payload: { doseId },
+      });
+
+      // Verify markedBy is "Daniel"
+      const result = await testClient.execute({
+        sql: `SELECT marked_by FROM dose_tracking WHERE dose_id = ?`,
+        args: [doseId],
+      });
+      expect(result.rows[0].marked_by).toBe("Daniel");
+
+      // Unmark via share link
+      await app.inject({
+        method: "DELETE",
+        url: `/share/${token}/doses/${encodeURIComponent(doseId)}`,
+      });
+
+      // Verify deleted
+      const afterDelete = await testClient.execute({
+        sql: `SELECT COUNT(*) as count FROM dose_tracking WHERE dose_id = ?`,
+        args: [doseId],
+      });
+      expect(afterDelete.rows[0].count).toBe(0);
+    });
+
+    it("should show medication in shared schedule after marking dose", async () => {
+      // Create medication
+      const createRes = await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Vitamin D",
+          takenBy: ["Anna"],
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+      const medId = createRes.json().id;
+
+      // Create share token
+      const shareRes = await app.inject({
+        method: "POST",
+        url: "/share",
+        payload: { takenBy: "Anna", scheduleDays: 30 },
+      });
+      const token = shareRes.json().token;
+
+      // Mark a dose
+      const doseId = `${medId}-0-${new Date("2025-01-05T08:00:00.000Z").getTime()}`;
+      await app.inject({
+        method: "POST",
+        url: `/share/${token}/doses`,
+        payload: { doseId },
+      });
+
+      // Get shared schedule
+      const scheduleRes = await app.inject({
+        method: "GET",
+        url: `/share/${token}`,
+      });
+
+      const data = scheduleRes.json();
+      expect(data.takenBy).toBe("Anna");
+      expect(data.medications).toHaveLength(1);
+      expect(data.medications[0].name).toBe("Vitamin D");
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Settings + Stock Calculation Mode
+  // ---------------------------------------------------------------------------
+
+  describe("Settings affect stock calculation", () => {
+    it("should persist stock calculation mode across requests", async () => {
+      // Set to manual mode
+      await app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          emailEnabled: false,
+          notificationEmail: "",
+          reminderDaysBefore: 7,
+          repeatDailyReminders: false,
+          lowStockDays: 30,
+          normalStockDays: 90,
+          highStockDays: 180,
+          shoutrrrEnabled: false,
+          shoutrrrUrl: "",
+          emailStockReminders: true,
+          emailIntakeReminders: true,
+          shoutrrrStockReminders: true,
+          shoutrrrIntakeReminders: true,
+          language: "en",
+          stockCalculationMode: "manual",
+        },
+      });
+
+      // Verify it's saved
+      const getRes = await app.inject({
+        method: "GET",
+        url: "/settings",
+      });
+      expect(getRes.json().stockCalculationMode).toBe("manual");
+
+      // Change to automatic
+      await app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          emailEnabled: false,
+          notificationEmail: "",
+          reminderDaysBefore: 7,
+          repeatDailyReminders: false,
+          lowStockDays: 30,
+          normalStockDays: 90,
+          highStockDays: 180,
+          shoutrrrEnabled: false,
+          shoutrrrUrl: "",
+          emailStockReminders: true,
+          emailIntakeReminders: true,
+          shoutrrrStockReminders: true,
+          shoutrrrIntakeReminders: true,
+          language: "en",
+          stockCalculationMode: "automatic",
+        },
+      });
+
+      const getRes2 = await app.inject({
+        method: "GET",
+        url: "/settings",
+      });
+      expect(getRes2.json().stockCalculationMode).toBe("automatic");
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Multi-Person Medication Scenarios
+  // ---------------------------------------------------------------------------
+
+  describe("Multi-person medication scenarios", () => {
+    it("should create separate share links for different people", async () => {
+      // Create medication for multiple people
+      await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Family Vitamins",
+          takenBy: ["Daniel", "Anna", "Max"],
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      // Create share links for each person
+      const danielShare = await app.inject({
+        method: "POST",
+        url: "/share",
+        payload: { takenBy: "Daniel", scheduleDays: 30 },
+      });
+
+      const annaShare = await app.inject({
+        method: "POST",
+        url: "/share",
+        payload: { takenBy: "Anna", scheduleDays: 30 },
+      });
+
+      // Both should succeed with different tokens
+      expect(danielShare.statusCode).toBe(200);
+      expect(annaShare.statusCode).toBe(200);
+      expect(danielShare.json().token).not.toBe(annaShare.json().token);
+
+      // Each share link should show correct person
+      const danielSchedule = await app.inject({
+        method: "GET",
+        url: `/share/${danielShare.json().token}`,
+      });
+      expect(danielSchedule.json().takenBy).toBe("Daniel");
+
+      const annaSchedule = await app.inject({
+        method: "GET",
+        url: `/share/${annaShare.json().token}`,
+      });
+      expect(annaSchedule.json().takenBy).toBe("Anna");
+    });
+
+    it("should list all people correctly via /share/people", async () => {
+      // Create multiple medications
+      await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Med 1",
+          takenBy: ["Daniel", "Anna"],
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Med 2",
+          takenBy: ["Max"],
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Med 3",
+          takenBy: ["Daniel"], // Daniel again
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      // Get all people
+      const peopleRes = await app.inject({
+        method: "GET",
+        url: "/share/people",
+      });
+
+      const people = peopleRes.json().people;
+      expect(people).toContain("Daniel");
+      expect(people).toContain("Anna");
+      expect(people).toContain("Max");
+      expect(people.length).toBe(3); // No duplicates
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Edge Cases
+  // ---------------------------------------------------------------------------
+
+  describe("Edge cases", () => {
+    it("should handle medication with 0 stock correctly", async () => {
+      const createRes = await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Empty Med",
+          packCount: 0,
+          blistersPerPack: 1,
+          pillsPerBlister: 10,
+          looseTablets: 0,
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      expect(createRes.statusCode).toBe(200);
+      expect(createRes.json().packCount).toBe(0);
+    });
+
+    it("should handle medication with very high pill count", async () => {
+      const createRes = await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Bulk Med",
+          packCount: 100,
+          blistersPerPack: 10,
+          pillsPerBlister: 100,
+          looseTablets: 500,
+          blisters: [{ usage: 0.5, every: 7, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      expect(createRes.statusCode).toBe(200);
+      // Total: 100 * 10 * 100 + 500 = 100500 pills
+    });
+
+    it("should handle fractional pill usage", async () => {
+      const createRes = await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Half-Pill Med",
+          blisters: [
+            { usage: 0.5, every: 1, start: "2025-01-01T08:00:00.000Z" },
+            { usage: 0.25, every: 1, start: "2025-01-01T20:00:00.000Z" },
+          ],
+        },
+      });
+
+      expect(createRes.statusCode).toBe(200);
+      expect(createRes.json().blisters[0].usage).toBe(0.5);
+      expect(createRes.json().blisters[1].usage).toBe(0.25);
+    });
+
+    it("should handle weekly medication schedule", async () => {
+      const createRes = await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Weekly Med",
+          blisters: [{ usage: 1, every: 7, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      expect(createRes.statusCode).toBe(200);
+      expect(createRes.json().blisters[0].every).toBe(7);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Planner Usage Calculation - POST /medications/usage
+  // This is a CRITICAL feature for the app - calculates if stock is enough
+  // ---------------------------------------------------------------------------
+
+  describe("Planner usage calculation", () => {
+    it("should calculate correct usage for daily medication", async () => {
+      // Create medication: 2 packs × 3 blisters × 10 pills = 60 pills total
+      // Schedule: 1 pill daily starting Jan 1
+      await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Daily Med",
+          packCount: 2,
+          blistersPerPack: 3,
+          pillsPerBlister: 10,
+          looseTablets: 0,
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      // Calculate usage for Jan 1-10 (10 days = 10 pills needed)
+      const response = await app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-11T00:00:00.000Z", // 10 days
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data).toHaveLength(1);
+      expect(data[0].medicationName).toBe("Daily Med");
+      expect(data[0].plannerUsage).toBe(10); // 10 days × 1 pill
+      // Note: 'enough' depends on current stock after consumption since start date
+      // Since test runs ~364 days after Jan 1, most pills are consumed
+    });
+
+    it("should detect insufficient stock", async () => {
+      // Create medication: 1 pack × 1 blister × 5 pills = 5 pills total
+      // Schedule: 1 pill daily
+      await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Low Stock Med",
+          packCount: 1,
+          blistersPerPack: 1,
+          pillsPerBlister: 5,
+          looseTablets: 0,
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      // Calculate usage for 10 days (needs 10 pills, only have 5 originally)
+      const response = await app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-11T00:00:00.000Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data[0].plannerUsage).toBe(10);
+      expect(data[0].enough).toBe(false); // Not enough!
+    });
+
+    it("should calculate weekly medication usage correctly", async () => {
+      // Create medication: 10 pills total
+      // Schedule: 1 pill every 7 days starting Jan 1
+      await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Weekly Med",
+          packCount: 1,
+          blistersPerPack: 1,
+          pillsPerBlister: 10,
+          blisters: [{ usage: 1, every: 7, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      // Calculate usage for 30 days (should need ~4-5 pills)
+      const response = await app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-31T00:00:00.000Z", // 30 days
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      // Jan 1, 8, 15, 22, 29 = 5 doses
+      expect(data[0].plannerUsage).toBe(5);
+    });
+
+    it("should handle multiple intake schedules per medication", async () => {
+      // Create medication with morning and evening doses
+      // 30 pills total, 1.5 pills per day (1 morning + 0.5 evening)
+      await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Twice Daily Med",
+          packCount: 1,
+          blistersPerPack: 1,
+          pillsPerBlister: 30,
+          blisters: [
+            { usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" },   // Morning: 1 pill
+            { usage: 0.5, every: 1, start: "2025-01-01T20:00:00.000Z" }, // Evening: 0.5 pill
+          ],
+        },
+      });
+
+      // Calculate for 10 days
+      const response = await app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-11T00:00:00.000Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      // 10 days × (1 + 0.5) = 15 pills
+      expect(data[0].plannerUsage).toBe(15);
+    });
+
+    it("should calculate correct blisters needed", async () => {
+      // 10 pills per blister, need 25 pills → need 3 blisters
+      await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Blister Med",
+          packCount: 5,
+          blistersPerPack: 1,
+          pillsPerBlister: 10,
+          blisters: [{ usage: 2.5, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      // 10 days × 2.5 pills = 25 pills needed
+      const response = await app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-11T00:00:00.000Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data[0].plannerUsage).toBe(25);
+      expect(data[0].blistersNeeded).toBe(3); // ceil(25/10)
+      expect(data[0].blisterSize).toBe(10);
+    });
+
+    it("should reject invalid date range", async () => {
+      // End before start
+      const response = await app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-15T00:00:00.000Z",
+          endDate: "2025-01-01T00:00:00.000Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+    });
+
+    it("should handle medication not yet started", async () => {
+      // Medication starts in the future
+      await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Future Med",
+          packCount: 1,
+          blistersPerPack: 1,
+          pillsPerBlister: 30,
+          blisters: [{ usage: 1, every: 1, start: "2025-06-01T08:00:00.000Z" }], // Starts June
+        },
+      });
+
+      // Query for January (before start)
+      const response = await app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-31T00:00:00.000Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data[0].plannerUsage).toBe(0); // No usage before start
+    });
+
+    it("should return correct totalPills based on current stock", async () => {
+      // Fresh medication with future start date = no consumption yet
+      await app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Fresh Med",
+          packCount: 2,
+          blistersPerPack: 2,
+          pillsPerBlister: 10,
+          looseTablets: 5,
+          // Start in far future so no consumption
+          blisters: [{ usage: 1, every: 1, start: "2030-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2030-01-01T00:00:00.000Z",
+          endDate: "2030-01-11T00:00:00.000Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      // Total: 2 packs × 2 blisters × 10 pills + 5 loose = 45 pills
+      expect(data[0].totalPills).toBe(45);
+      expect(data[0].plannerUsage).toBe(10);
+      expect(data[0].enough).toBe(true); // 45 > 10
+    });
+  });
+});

backend/src/test/medications.test.ts

@@ -0,0 +1,672 @@
+/**
+ * Tests for /medications API endpoints.
+ * Tests CRUD operations for medications.
+ */
+import { describe, it, expect, beforeAll, afterAll, beforeEach } from "vitest";
+import {
+  buildTestApp,
+  closeTestApp,
+  clearTestData,
+  createTestUser,
+  createTestMedication,
+  TestContext,
+} from "./setup.js";
+
+// =============================================================================
+// Route Registration
+// =============================================================================
+
+async function registerMedicationRoutes(ctx: TestContext) {
+  const { app, client } = ctx;
+
+  // GET /medications - List all medications
+  app.get("/medications", async (request, reply) => {
+    const userId = 1;
+
+    const result = await client.execute({
+      sql: `SELECT * FROM medications WHERE user_id = ? ORDER BY name`,
+      args: [userId],
+    });
+
+    return result.rows.map((m) => ({
+      id: m.id,
+      name: m.name,
+      genericName: m.generic_name,
+      takenBy: JSON.parse((m.taken_by_json as string) || "[]"),
+      packCount: m.pack_count,
+      blistersPerPack: m.blisters_per_pack,
+      pillsPerBlister: m.pills_per_blister,
+      looseTablets: m.loose_tablets,
+      pillWeightMg: m.pill_weight_mg,
+      imageUrl: m.image_url,
+      expiryDate: m.expiry_date,
+      notes: m.notes,
+      intakeRemindersEnabled: Boolean(m.intake_reminders_enabled),
+      blisters: (() => {
+        const usage: number[] = JSON.parse((m.usage_json as string) || "[]");
+        const every: number[] = JSON.parse((m.every_json as string) || "[]");
+        const start: string[] = JSON.parse((m.start_json as string) || "[]");
+        return usage.map((u, i) => ({
+          usage: u,
+          every: every[i] || 1,
+          start: start[i] || new Date().toISOString(),
+        }));
+      })(),
+    }));
+  });
+
+  // POST /medications - Create medication
+  app.post<{
+    Body: {
+      name: string;
+      genericName?: string;
+      takenBy?: string[];
+      packCount?: number;
+      blistersPerPack?: number;
+      pillsPerBlister?: number;
+      looseTablets?: number;
+      pillWeightMg?: number;
+      expiryDate?: string;
+      notes?: string;
+      intakeRemindersEnabled?: boolean;
+      blisters: Array<{ usage: number; every: number; start: string }>;
+    };
+  }>("/medications", async (request, reply) => {
+    const userId = 1;
+    const body = request.body || {};
+
+    // Validation
+    if (!body.name || body.name.length === 0) {
+      return reply.status(400).send({ error: "Name is required" });
+    }
+    if (body.name.length > 100) {
+      return reply.status(400).send({ error: "Name must be 100 characters or less" });
+    }
+    if (!body.blisters || body.blisters.length === 0) {
+      return reply.status(400).send({ error: "At least one intake schedule is required" });
+    }
+    if (body.blisters.length > 12) {
+      return reply.status(400).send({ error: "Maximum 12 intake schedules allowed" });
+    }
+
+    const usageJson = JSON.stringify(body.blisters.map((b) => b.usage));
+    const everyJson = JSON.stringify(body.blisters.map((b) => b.every));
+    const startJson = JSON.stringify(body.blisters.map((b) => b.start));
+    const takenByJson = JSON.stringify(body.takenBy || []);
+
+    const result = await client.execute({
+      sql: `INSERT INTO medications (
+        user_id, name, generic_name, taken_by_json,
+        pack_count, blisters_per_pack, pills_per_blister, loose_tablets,
+        pill_weight_mg, expiry_date, notes, intake_reminders_enabled,
+        usage_json, every_json, start_json
+      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) RETURNING id`,
+      args: [
+        userId,
+        body.name,
+        body.genericName || null,
+        takenByJson,
+        body.packCount ?? 1,
+        body.blistersPerPack ?? 1,
+        body.pillsPerBlister ?? 1,
+        body.looseTablets ?? 0,
+        body.pillWeightMg ?? null,
+        body.expiryDate || null,
+        body.notes || null,
+        body.intakeRemindersEnabled ? 1 : 0,
+        usageJson,
+        everyJson,
+        startJson,
+      ],
+    });
+
+    return { id: result.rows[0].id, success: true };
+  });
+
+  // PUT /medications/:id - Update medication
+  app.put<{
+    Params: { id: string };
+    Body: {
+      name: string;
+      genericName?: string;
+      takenBy?: string[];
+      packCount?: number;
+      blistersPerPack?: number;
+      pillsPerBlister?: number;
+      looseTablets?: number;
+      pillWeightMg?: number;
+      expiryDate?: string;
+      notes?: string;
+      intakeRemindersEnabled?: boolean;
+      blisters: Array<{ usage: number; every: number; start: string }>;
+    };
+  }>("/medications/:id", async (request, reply) => {
+    const userId = 1;
+    const medId = parseInt(request.params.id, 10);
+    const body = request.body || {};
+
+    // Check ownership
+    const existing = await client.execute({
+      sql: `SELECT id FROM medications WHERE id = ? AND user_id = ?`,
+      args: [medId, userId],
+    });
+
+    if (existing.rows.length === 0) {
+      return reply.status(404).send({ error: "Medication not found" });
+    }
+
+    // Validation
+    if (!body.name || body.name.length === 0) {
+      return reply.status(400).send({ error: "Name is required" });
+    }
+    if (!body.blisters || body.blisters.length === 0) {
+      return reply.status(400).send({ error: "At least one intake schedule is required" });
+    }
+
+    const usageJson = JSON.stringify(body.blisters.map((b) => b.usage));
+    const everyJson = JSON.stringify(body.blisters.map((b) => b.every));
+    const startJson = JSON.stringify(body.blisters.map((b) => b.start));
+    const takenByJson = JSON.stringify(body.takenBy || []);
+
+    await client.execute({
+      sql: `UPDATE medications SET
+        name = ?, generic_name = ?, taken_by_json = ?,
+        pack_count = ?, blisters_per_pack = ?, pills_per_blister = ?, loose_tablets = ?,
+        pill_weight_mg = ?, expiry_date = ?, notes = ?, intake_reminders_enabled = ?,
+        usage_json = ?, every_json = ?, start_json = ?,
+        updated_at = strftime('%s','now')
+      WHERE id = ? AND user_id = ?`,
+      args: [
+        body.name,
+        body.genericName || null,
+        takenByJson,
+        body.packCount ?? 1,
+        body.blistersPerPack ?? 1,
+        body.pillsPerBlister ?? 1,
+        body.looseTablets ?? 0,
+        body.pillWeightMg ?? null,
+        body.expiryDate || null,
+        body.notes || null,
+        body.intakeRemindersEnabled ? 1 : 0,
+        usageJson,
+        everyJson,
+        startJson,
+        medId,
+        userId,
+      ],
+    });
+
+    return { success: true };
+  });
+
+  // DELETE /medications/:id - Delete medication
+  app.delete<{ Params: { id: string } }>("/medications/:id", async (request, reply) => {
+    const userId = 1;
+    const medId = parseInt(request.params.id, 10);
+
+    // Check ownership
+    const existing = await client.execute({
+      sql: `SELECT id FROM medications WHERE id = ? AND user_id = ?`,
+      args: [medId, userId],
+    });
+
+    if (existing.rows.length === 0) {
+      return reply.status(404).send({ error: "Medication not found" });
+    }
+
+    await client.execute({
+      sql: `DELETE FROM medications WHERE id = ? AND user_id = ?`,
+      args: [medId, userId],
+    });
+
+    return { success: true };
+  });
+
+  // GET /medications/:id - Get single medication
+  app.get<{ Params: { id: string } }>("/medications/:id", async (request, reply) => {
+    const userId = 1;
+    const medId = parseInt(request.params.id, 10);
+
+    const result = await client.execute({
+      sql: `SELECT * FROM medications WHERE id = ? AND user_id = ?`,
+      args: [medId, userId],
+    });
+
+    if (result.rows.length === 0) {
+      return reply.status(404).send({ error: "Medication not found" });
+    }
+
+    const m = result.rows[0];
+    return {
+      id: m.id,
+      name: m.name,
+      genericName: m.generic_name,
+      takenBy: JSON.parse((m.taken_by_json as string) || "[]"),
+      packCount: m.pack_count,
+      blistersPerPack: m.blisters_per_pack,
+      pillsPerBlister: m.pills_per_blister,
+      looseTablets: m.loose_tablets,
+      pillWeightMg: m.pill_weight_mg,
+      imageUrl: m.image_url,
+      expiryDate: m.expiry_date,
+      notes: m.notes,
+      intakeRemindersEnabled: Boolean(m.intake_reminders_enabled),
+      blisters: (() => {
+        const usage: number[] = JSON.parse((m.usage_json as string) || "[]");
+        const every: number[] = JSON.parse((m.every_json as string) || "[]");
+        const start: string[] = JSON.parse((m.start_json as string) || "[]");
+        return usage.map((u, i) => ({
+          usage: u,
+          every: every[i] || 1,
+          start: start[i] || new Date().toISOString(),
+        }));
+      })(),
+    };
+  });
+}
+
+// =============================================================================
+// Tests
+// =============================================================================
+
+describe("Medications API", () => {
+  let ctx: TestContext;
+  let userId: number;
+
+  beforeAll(async () => {
+    ctx = await buildTestApp();
+    await registerMedicationRoutes(ctx);
+    await ctx.app.ready();
+  });
+
+  afterAll(async () => {
+    await closeTestApp(ctx);
+  });
+
+  beforeEach(async () => {
+    await clearTestData(ctx.client);
+    await ctx.client.execute("DELETE FROM sqlite_sequence WHERE name='users'");
+    await ctx.client.execute("DELETE FROM sqlite_sequence WHERE name='medications'");
+    userId = await createTestUser(ctx.client, { username: "testuser" });
+  });
+
+  // ---------------------------------------------------------------------------
+  // GET /medications
+  // ---------------------------------------------------------------------------
+
+  describe("GET /medications", () => {
+    it("should return empty array when no medications", async () => {
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/medications",
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual([]);
+    });
+
+    it("should return list of medications", async () => {
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Aspirin",
+        genericName: "Acetylsalicylic acid",
+        takenBy: ["Daniel"],
+        packCount: 2,
+        pillsPerBlister: 10,
+      });
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Ibuprofen",
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/medications",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data).toHaveLength(2);
+      // Sorted by name
+      expect(data[0].name).toBe("Aspirin");
+      expect(data[0].genericName).toBe("Acetylsalicylic acid");
+      expect(data[0].takenBy).toEqual(["Daniel"]);
+      expect(data[1].name).toBe("Ibuprofen");
+    });
+
+    it("should return medication with all fields", async () => {
+      const startDate = "2025-01-01T08:00:00.000Z";
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Test Med",
+        genericName: "Generic Name",
+        takenBy: ["Person1", "Person2"],
+        packCount: 3,
+        blistersPerPack: 2,
+        pillsPerBlister: 14,
+        looseTablets: 5,
+        pillWeightMg: 500,
+        blisters: [
+          { usage: 1, every: 1, start: startDate },
+          { usage: 2, every: 2, start: startDate },
+        ],
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/medications",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const [med] = response.json();
+      expect(med.name).toBe("Test Med");
+      expect(med.genericName).toBe("Generic Name");
+      expect(med.takenBy).toEqual(["Person1", "Person2"]);
+      expect(med.packCount).toBe(3);
+      expect(med.blistersPerPack).toBe(2);
+      expect(med.pillsPerBlister).toBe(14);
+      expect(med.looseTablets).toBe(5);
+      expect(med.pillWeightMg).toBe(500);
+      expect(med.blisters).toHaveLength(2);
+      expect(med.blisters[0]).toEqual({ usage: 1, every: 1, start: startDate });
+      expect(med.blisters[1]).toEqual({ usage: 2, every: 2, start: startDate });
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // POST /medications
+  // ---------------------------------------------------------------------------
+
+  describe("POST /medications", () => {
+    it("should create a medication", async () => {
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "New Med",
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.success).toBe(true);
+      expect(data.id).toBeDefined();
+
+      // Verify in database
+      const result = await ctx.client.execute({
+        sql: `SELECT name FROM medications WHERE id = ?`,
+        args: [data.id],
+      });
+      expect(result.rows[0].name).toBe("New Med");
+    });
+
+    it("should create medication with all fields", async () => {
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Full Med",
+          genericName: "Generic",
+          takenBy: ["Alice", "Bob"],
+          packCount: 2,
+          blistersPerPack: 3,
+          pillsPerBlister: 10,
+          looseTablets: 5,
+          pillWeightMg: 250,
+          expiryDate: "2026-12-31",
+          notes: "Take with food",
+          intakeRemindersEnabled: true,
+          blisters: [
+            { usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" },
+            { usage: 2, every: 1, start: "2025-01-01T20:00:00.000Z" },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+
+      // Verify
+      const medId = response.json().id;
+      const result = await ctx.client.execute({
+        sql: `SELECT * FROM medications WHERE id = ?`,
+        args: [medId],
+      });
+      const med = result.rows[0];
+      expect(med.name).toBe("Full Med");
+      expect(med.generic_name).toBe("Generic");
+      expect(JSON.parse(med.taken_by_json as string)).toEqual(["Alice", "Bob"]);
+      expect(med.pack_count).toBe(2);
+      expect(med.blisters_per_pack).toBe(3);
+      expect(med.pills_per_blister).toBe(10);
+      expect(med.loose_tablets).toBe(5);
+      expect(med.pill_weight_mg).toBe(250);
+      expect(med.expiry_date).toBe("2026-12-31");
+      expect(med.notes).toBe("Take with food");
+      expect(med.intake_reminders_enabled).toBe(1);
+    });
+
+    it("should reject request without name", async () => {
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().error).toBe("Name is required");
+    });
+
+    it("should reject request without blisters", async () => {
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Test",
+          blisters: [],
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().error).toBe("At least one intake schedule is required");
+    });
+
+    it("should reject name over 100 characters", async () => {
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "A".repeat(101),
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().error).toBe("Name must be 100 characters or less");
+    });
+
+    it("should reject more than 12 blisters", async () => {
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications",
+        payload: {
+          name: "Test",
+          blisters: Array(13).fill({ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }),
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().error).toBe("Maximum 12 intake schedules allowed");
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // PUT /medications/:id
+  // ---------------------------------------------------------------------------
+
+  describe("PUT /medications/:id", () => {
+    it("should update a medication", async () => {
+      const medId = await createTestMedication(ctx.client, {
+        userId,
+        name: "Old Name",
+      });
+
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: `/medications/${medId}`,
+        payload: {
+          name: "New Name",
+          blisters: [{ usage: 2, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true });
+
+      // Verify
+      const result = await ctx.client.execute({
+        sql: `SELECT name, usage_json FROM medications WHERE id = ?`,
+        args: [medId],
+      });
+      expect(result.rows[0].name).toBe("New Name");
+      expect(JSON.parse(result.rows[0].usage_json as string)).toEqual([2]);
+    });
+
+    it("should return 404 for non-existent medication", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/medications/99999",
+        payload: {
+          name: "Test",
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      expect(response.statusCode).toBe(404);
+      expect(response.json().error).toBe("Medication not found");
+    });
+
+    it("should not update medication of another user", async () => {
+      // Create another user
+      const otherUserId = await createTestUser(ctx.client, { username: "other" });
+      const medId = await createTestMedication(ctx.client, {
+        userId: otherUserId,
+        name: "Other Med",
+      });
+
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: `/medications/${medId}`,
+        payload: {
+          name: "Hacked",
+          blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+        },
+      });
+
+      expect(response.statusCode).toBe(404);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // DELETE /medications/:id
+  // ---------------------------------------------------------------------------
+
+  describe("DELETE /medications/:id", () => {
+    it("should delete a medication", async () => {
+      const medId = await createTestMedication(ctx.client, {
+        userId,
+        name: "To Delete",
+      });
+
+      const response = await ctx.app.inject({
+        method: "DELETE",
+        url: `/medications/${medId}`,
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true });
+
+      // Verify deleted
+      const result = await ctx.client.execute({
+        sql: `SELECT COUNT(*) as count FROM medications WHERE id = ?`,
+        args: [medId],
+      });
+      expect(result.rows[0].count).toBe(0);
+    });
+
+    it("should return 404 for non-existent medication", async () => {
+      const response = await ctx.app.inject({
+        method: "DELETE",
+        url: "/medications/99999",
+      });
+
+      expect(response.statusCode).toBe(404);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // GET /medications/:id
+  // ---------------------------------------------------------------------------
+
+  describe("GET /medications/:id", () => {
+    it("should return single medication", async () => {
+      const medId = await createTestMedication(ctx.client, {
+        userId,
+        name: "Single Med",
+        genericName: "Generic",
+        takenBy: ["Daniel"],
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: `/medications/${medId}`,
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.id).toBe(medId);
+      expect(data.name).toBe("Single Med");
+      expect(data.genericName).toBe("Generic");
+      expect(data.takenBy).toEqual(["Daniel"]);
+    });
+
+    it("should return 404 for non-existent medication", async () => {
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/medications/99999",
+      });
+
+      expect(response.statusCode).toBe(404);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Stock Calculation Tests
+  // ---------------------------------------------------------------------------
+
+  describe("Stock Calculation", () => {
+    it("should calculate total pills correctly", async () => {
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Stock Test",
+        packCount: 2,
+        blistersPerPack: 3,
+        pillsPerBlister: 10,
+        looseTablets: 5,
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/medications",
+      });
+
+      const [med] = response.json();
+      // Total = (2 packs × 3 blisters × 10 pills) + 5 loose = 65
+      const totalPills =
+        med.packCount * med.blistersPerPack * med.pillsPerBlister + med.looseTablets;
+      expect(totalPills).toBe(65);
+    });
+  });
+});

backend/src/test/planner.test.ts

@@ -0,0 +1,710 @@
+import { describe, it, expect, beforeAll, afterAll, beforeEach, vi } from "vitest";
+import Fastify, { FastifyInstance } from "fastify";
+import { createClient, Client } from "@libsql/client";
+import { drizzle } from "drizzle-orm/libsql";
+
+// Create test database and mocks before anything else (hoisted)
+const { testClient, testDb, mockSendMail, mockSendShoutrrr, mockUpdateReminderSentTime, mockUpdateUserReminderSentTime } = vi.hoisted(() => {
+  const { createClient } = require("@libsql/client");
+  const { drizzle } = require("drizzle-orm/libsql");
+  const client = createClient({ url: ":memory:" });
+  const db = drizzle(client);
+  return { 
+    testClient: client, 
+    testDb: db,
+    mockSendMail: vi.fn(),
+    mockSendShoutrrr: vi.fn(),
+    mockUpdateReminderSentTime: vi.fn(),
+    mockUpdateUserReminderSentTime: vi.fn(),
+  };
+});
+
+// Mock nodemailer
+vi.mock("nodemailer", () => ({
+  default: {
+    createTransport: vi.fn(() => ({
+      sendMail: mockSendMail,
+    })),
+  },
+}));
+
+// Mock the db module
+vi.mock("../db/client.js", () => ({
+  db: testDb,
+  migrationsReady: Promise.resolve(),
+}));
+
+// Mock env to disable auth
+vi.mock("../plugins/env.js", () => ({
+  env: {
+    AUTH_ENABLED: false,
+    JWT_SECRET: "test-secret-key-for-testing",
+    JWT_REFRESH_SECRET: "test-refresh-secret-key",
+  },
+}));
+
+// Mock auth plugin
+vi.mock("../plugins/auth.js", () => ({
+  requireAuth: async () => {},
+  getAnonymousUserId: () => 999999999,
+}));
+
+// Mock reminder-scheduler
+vi.mock("../services/reminder-scheduler.js", () => ({
+  updateReminderSentTime: mockUpdateReminderSentTime,
+  updateUserReminderSentTime: mockUpdateUserReminderSentTime,
+}));
+
+// Mock sendShoutrrrNotification from settings
+vi.mock("../routes/settings.js", async (importOriginal) => {
+  const original = await importOriginal() as any;
+  return {
+    ...original,
+    sendShoutrrrNotification: mockSendShoutrrr,
+  };
+});
+
+import { plannerRoutes } from "../routes/planner.js";
+
+// =============================================================================
+// Test Setup
+// =============================================================================
+
+async function createSchema(client: Client) {
+  const tableCreations = [
+    `CREATE TABLE IF NOT EXISTS users (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      username text NOT NULL UNIQUE,
+      password_hash text,
+      auth_provider text NOT NULL DEFAULT 'local',
+      is_active integer NOT NULL DEFAULT 1,
+      created_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      updated_at integer NOT NULL DEFAULT (strftime('%s','now'))
+    )`,
+    `CREATE TABLE IF NOT EXISTS user_settings (
+      id integer PRIMARY KEY AUTOINCREMENT,
+      user_id integer NOT NULL UNIQUE,
+      email_enabled integer NOT NULL DEFAULT 0,
+      notification_email text,
+      email_stock_reminders integer NOT NULL DEFAULT 1,
+      email_intake_reminders integer NOT NULL DEFAULT 1,
+      shoutrrr_enabled integer NOT NULL DEFAULT 0,
+      shoutrrr_url text,
+      shoutrrr_stock_reminders integer NOT NULL DEFAULT 1,
+      shoutrrr_intake_reminders integer NOT NULL DEFAULT 1,
+      reminder_days_before integer NOT NULL DEFAULT 7,
+      repeat_daily_reminders integer NOT NULL DEFAULT 0,
+      skip_reminders_for_taken_doses integer NOT NULL DEFAULT 0,
+      repeat_reminders_enabled integer NOT NULL DEFAULT 0,
+      reminder_repeat_interval_minutes integer NOT NULL DEFAULT 30,
+      max_nagging_reminders integer NOT NULL DEFAULT 5,
+      low_stock_days integer NOT NULL DEFAULT 30,
+      normal_stock_days integer NOT NULL DEFAULT 90,
+      high_stock_days integer NOT NULL DEFAULT 180,
+      expiry_warning_days integer NOT NULL DEFAULT 90,
+      language text NOT NULL DEFAULT 'en',
+      stock_calculation_mode text NOT NULL DEFAULT 'automatic',
+      last_auto_email_sent text,
+      last_notification_type text,
+      last_notification_channel text,
+      updated_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+    )`,
+  ];
+
+  for (const sql of tableCreations) {
+    await client.execute(sql);
+  }
+}
+
+async function clearData(client: Client) {
+  await client.execute("DELETE FROM user_settings");
+  await client.execute("DELETE FROM users");
+  await client.execute("DELETE FROM sqlite_sequence");
+}
+
+describe("Planner Routes", () => {
+  let app: FastifyInstance;
+
+  beforeAll(async () => {
+    await createSchema(testClient);
+  });
+
+  beforeEach(async () => {
+    await clearData(testClient);
+    
+    // Create anonymous user
+    await testClient.execute(
+      "INSERT INTO users (id, username, auth_provider) VALUES (999999999, '__anonymous__', 'anonymous')"
+    );
+
+    app = Fastify({ logger: false });
+    await app.register(plannerRoutes);
+    await app.ready();
+    
+    vi.clearAllMocks();
+    mockSendMail.mockReset();
+    mockSendShoutrrr.mockReset();
+  });
+
+  afterAll(async () => {
+    await app?.close();
+    testClient.close();
+  });
+
+  describe("POST /planner/send-email", () => {
+    it("should reject request with missing email", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/planner/send-email",
+        payload: {
+          from: "2025-01-01",
+          until: "2025-01-31",
+          rows: [{ medicationName: "Test", totalPills: 10, plannerUsage: 5, enough: true }],
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json()).toEqual({ error: "Missing email or planner data" });
+    });
+
+    it("should reject request with missing rows", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/planner/send-email",
+        payload: {
+          email: "test@example.com",
+          from: "2025-01-01",
+          until: "2025-01-31",
+          rows: [],
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json()).toEqual({ error: "Missing email or planner data" });
+    });
+
+    it("should reject when SMTP is not configured", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/planner/send-email",
+        payload: {
+          email: "test@example.com",
+          from: "2025-01-01",
+          until: "2025-01-31",
+          rows: [
+            {
+              medicationId: 1,
+              medicationName: "Aspirin",
+              totalPills: 30,
+              plannerUsage: 10,
+              blisterSize: 10,
+              blistersNeeded: 1,
+              fullBlisters: 3,
+              loosePills: 0,
+              enough: true,
+            },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json()).toEqual({ error: "SMTP not configured" });
+    });
+
+    it("should send email successfully when SMTP is configured", async () => {
+      // Set SMTP env vars
+      process.env.SMTP_HOST = "smtp.test.com";
+      process.env.SMTP_USER = "user@test.com";
+      process.env.SMTP_PASS = "password";
+
+      mockSendMail.mockResolvedValueOnce({ messageId: "123" });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/planner/send-email",
+        payload: {
+          email: "test@example.com",
+          from: "2025-01-01",
+          until: "2025-01-31",
+          language: "en",
+          rows: [
+            {
+              medicationId: 1,
+              medicationName: "Aspirin",
+              totalPills: 30,
+              plannerUsage: 10,
+              blisterSize: 10,
+              blistersNeeded: 1,
+              fullBlisters: 3,
+              loosePills: 0,
+              enough: true,
+            },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true, message: "Email sent successfully" });
+      expect(mockSendMail).toHaveBeenCalledTimes(1);
+
+      // Cleanup
+      delete process.env.SMTP_HOST;
+      delete process.env.SMTP_USER;
+      delete process.env.SMTP_PASS;
+    });
+
+    it("should handle email with out of stock medications", async () => {
+      process.env.SMTP_HOST = "smtp.test.com";
+      process.env.SMTP_USER = "user@test.com";
+      process.env.SMTP_PASS = "password";
+
+      mockSendMail.mockResolvedValueOnce({ messageId: "123" });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/planner/send-email",
+        payload: {
+          email: "test@example.com",
+          from: "2025-01-01",
+          until: "2025-01-31",
+          rows: [
+            {
+              medicationId: 1,
+              medicationName: "Aspirin",
+              totalPills: 5,
+              plannerUsage: 30,
+              blisterSize: 10,
+              blistersNeeded: 3,
+              fullBlisters: 0,
+              loosePills: 5,
+              enough: false,
+            },
+            {
+              medicationId: 2,
+              medicationName: "Ibuprofen",
+              totalPills: 100,
+              plannerUsage: 10,
+              blisterSize: 10,
+              blistersNeeded: 1,
+              fullBlisters: 10,
+              loosePills: 0,
+              enough: true,
+            },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(mockSendMail).toHaveBeenCalledTimes(1);
+      
+      // Check that HTML contains out of stock warning
+      const mailCall = mockSendMail.mock.calls[0][0];
+      expect(mailCall.html).toContain("Out of Stock");
+      expect(mailCall.html).toContain("1 medication");
+
+      delete process.env.SMTP_HOST;
+      delete process.env.SMTP_USER;
+      delete process.env.SMTP_PASS;
+    });
+
+    it("should handle SMTP error gracefully", async () => {
+      process.env.SMTP_HOST = "smtp.test.com";
+      process.env.SMTP_USER = "user@test.com";
+      process.env.SMTP_PASS = "password";
+
+      mockSendMail.mockRejectedValueOnce(new Error("Connection refused"));
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/planner/send-email",
+        payload: {
+          email: "test@example.com",
+          from: "2025-01-01",
+          until: "2025-01-31",
+          rows: [
+            {
+              medicationId: 1,
+              medicationName: "Aspirin",
+              totalPills: 30,
+              plannerUsage: 10,
+              blisterSize: 10,
+              blistersNeeded: 1,
+              fullBlisters: 3,
+              loosePills: 0,
+              enough: true,
+            },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(500);
+      expect(response.json().error).toContain("Failed to send email");
+      expect(response.json().error).toContain("Connection refused");
+
+      delete process.env.SMTP_HOST;
+      delete process.env.SMTP_USER;
+      delete process.env.SMTP_PASS;
+    });
+
+    it("should use German locale when language is de", async () => {
+      process.env.SMTP_HOST = "smtp.test.com";
+      process.env.SMTP_USER = "user@test.com";
+      process.env.SMTP_PASS = "password";
+
+      mockSendMail.mockResolvedValueOnce({ messageId: "123" });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/planner/send-email",
+        payload: {
+          email: "test@example.com",
+          from: "2025-01-15",
+          until: "2025-02-15",
+          language: "de",
+          rows: [
+            {
+              medicationId: 1,
+              medicationName: "Aspirin",
+              totalPills: 30,
+              plannerUsage: 10,
+              blisterSize: 10,
+              blistersNeeded: 1,
+              fullBlisters: 3,
+              loosePills: 0,
+              enough: true,
+            },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      
+      // German date format should be used
+      const mailCall = mockSendMail.mock.calls[0][0];
+      expect(mailCall.subject).toContain("Supply Overview");
+
+      delete process.env.SMTP_HOST;
+      delete process.env.SMTP_USER;
+      delete process.env.SMTP_PASS;
+    });
+  });
+
+  describe("POST /reminder/send-email", () => {
+    it("should reject request with missing lowStock data", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/reminder/send-email",
+        payload: {
+          email: "test@example.com",
+          lowStock: [],
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json()).toEqual({ error: "Missing low stock data" });
+    });
+
+    it("should reject request with no lowStock array", async () => {
+      const response = await app.inject({
+        method: "POST",
+        url: "/reminder/send-email",
+        payload: {
+          email: "test@example.com",
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json()).toEqual({ error: "Missing low stock data" });
+    });
+
+    it("should return error when no notification channels configured", async () => {
+      // User settings exist but email/shoutrrr disabled
+      await testClient.execute({
+        sql: `INSERT INTO user_settings (user_id, email_enabled, shoutrrr_enabled, language) VALUES (?, 0, 0, 'en')`,
+        args: [999999999],
+      });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/reminder/send-email",
+        payload: {
+          email: "test@example.com",
+          lowStock: [
+            { name: "Aspirin", medsLeft: 5, daysLeft: 3, depletionDate: "2025-01-03" },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json()).toEqual({ error: "No notification channels configured" });
+    });
+
+    it("should send email reminder when email is enabled", async () => {
+      process.env.SMTP_HOST = "smtp.test.com";
+      process.env.SMTP_USER = "user@test.com";
+      process.env.SMTP_PASS = "password";
+
+      // Enable email in user settings
+      await testClient.execute({
+        sql: `INSERT INTO user_settings (user_id, email_enabled, shoutrrr_enabled, language) VALUES (?, 1, 0, 'en')`,
+        args: [999999999],
+      });
+
+      mockSendMail.mockResolvedValueOnce({ messageId: "123" });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/reminder/send-email",
+        payload: {
+          email: "test@example.com",
+          lowStock: [
+            { name: "Aspirin", medsLeft: 5, daysLeft: 3, depletionDate: "2025-01-03" },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true, message: "Reminder sent via email" });
+      expect(mockSendMail).toHaveBeenCalledTimes(1);
+
+      delete process.env.SMTP_HOST;
+      delete process.env.SMTP_USER;
+      delete process.env.SMTP_PASS;
+    });
+
+    it("should handle empty medications (medsLeft <= 0)", async () => {
+      process.env.SMTP_HOST = "smtp.test.com";
+      process.env.SMTP_USER = "user@test.com";
+      process.env.SMTP_PASS = "password";
+
+      await testClient.execute({
+        sql: `INSERT INTO user_settings (user_id, email_enabled, shoutrrr_enabled, language) VALUES (?, 1, 0, 'en')`,
+        args: [999999999],
+      });
+
+      mockSendMail.mockResolvedValueOnce({ messageId: "123" });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/reminder/send-email",
+        payload: {
+          email: "test@example.com",
+          lowStock: [
+            { name: "Aspirin", medsLeft: 0, daysLeft: 0, depletionDate: null },
+            { name: "Ibuprofen", medsLeft: 5, daysLeft: 3, depletionDate: "2025-01-03" },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      
+      // Check email contains EMPTY warning
+      const mailCall = mockSendMail.mock.calls[0][0];
+      expect(mailCall.subject).toContain("Empty");
+      expect(mailCall.html).toContain("EMPTY");
+
+      delete process.env.SMTP_HOST;
+      delete process.env.SMTP_USER;
+      delete process.env.SMTP_PASS;
+    });
+
+    it("should handle mixed empty and low stock medications", async () => {
+      process.env.SMTP_HOST = "smtp.test.com";
+      process.env.SMTP_USER = "user@test.com";
+      process.env.SMTP_PASS = "password";
+
+      await testClient.execute({
+        sql: `INSERT INTO user_settings (user_id, email_enabled, shoutrrr_enabled, language) VALUES (?, 1, 0, 'en')`,
+        args: [999999999],
+      });
+
+      mockSendMail.mockResolvedValueOnce({ messageId: "123" });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/reminder/send-email",
+        payload: {
+          email: "test@example.com",
+          lowStock: [
+            { name: "Aspirin", medsLeft: 0, daysLeft: 0, depletionDate: null },
+            { name: "Ibuprofen", medsLeft: 10, daysLeft: 5, depletionDate: "2025-01-05" },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      
+      const mailCall = mockSendMail.mock.calls[0][0];
+      expect(mailCall.subject).toContain("Empty");
+      expect(mailCall.subject).toContain("Running Low");
+
+      delete process.env.SMTP_HOST;
+      delete process.env.SMTP_USER;
+      delete process.env.SMTP_PASS;
+    });
+
+    it("should handle email error gracefully", async () => {
+      process.env.SMTP_HOST = "smtp.test.com";
+      process.env.SMTP_USER = "user@test.com";
+      process.env.SMTP_PASS = "password";
+
+      await testClient.execute({
+        sql: `INSERT INTO user_settings (user_id, email_enabled, shoutrrr_enabled, language) VALUES (?, 1, 0, 'en')`,
+        args: [999999999],
+      });
+
+      mockSendMail.mockRejectedValueOnce(new Error("SMTP error"));
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/reminder/send-email",
+        payload: {
+          email: "test@example.com",
+          lowStock: [
+            { name: "Aspirin", medsLeft: 5, daysLeft: 3, depletionDate: "2025-01-03" },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(500);
+      expect(response.json().error).toContain("Email:");
+
+      delete process.env.SMTP_HOST;
+      delete process.env.SMTP_USER;
+      delete process.env.SMTP_PASS;
+    });
+
+    it("should send push notification when shoutrrr is enabled", async () => {
+      await testClient.execute({
+        sql: `INSERT INTO user_settings (user_id, email_enabled, shoutrrr_enabled, shoutrrr_url, language) VALUES (?, 0, 1, 'ntfy://localhost/test', 'en')`,
+        args: [999999999],
+      });
+
+      mockSendShoutrrr.mockResolvedValueOnce({ success: true });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/reminder/send-email",
+        payload: {
+          email: "test@example.com",
+          lowStock: [
+            { name: "Aspirin", medsLeft: 5, daysLeft: 3, depletionDate: "2025-01-03" },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true, message: "Reminder sent via push" });
+      expect(mockSendShoutrrr).toHaveBeenCalledTimes(1);
+    });
+
+    it("should send both email and push when both enabled", async () => {
+      process.env.SMTP_HOST = "smtp.test.com";
+      process.env.SMTP_USER = "user@test.com";
+      process.env.SMTP_PASS = "password";
+
+      await testClient.execute({
+        sql: `INSERT INTO user_settings (user_id, email_enabled, shoutrrr_enabled, shoutrrr_url, language) VALUES (?, 1, 1, 'ntfy://localhost/test', 'en')`,
+        args: [999999999],
+      });
+
+      mockSendMail.mockResolvedValueOnce({ messageId: "123" });
+      mockSendShoutrrr.mockResolvedValueOnce({ success: true });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/reminder/send-email",
+        payload: {
+          email: "test@example.com",
+          lowStock: [
+            { name: "Aspirin", medsLeft: 5, daysLeft: 3, depletionDate: "2025-01-03" },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true, message: "Reminder sent via email and push" });
+      expect(mockSendMail).toHaveBeenCalledTimes(1);
+      expect(mockSendShoutrrr).toHaveBeenCalledTimes(1);
+
+      delete process.env.SMTP_HOST;
+      delete process.env.SMTP_USER;
+      delete process.env.SMTP_PASS;
+    });
+
+    it("should handle push notification error gracefully", async () => {
+      await testClient.execute({
+        sql: `INSERT INTO user_settings (user_id, email_enabled, shoutrrr_enabled, shoutrrr_url, language) VALUES (?, 0, 1, 'ntfy://localhost/test', 'en')`,
+        args: [999999999],
+      });
+
+      mockSendShoutrrr.mockResolvedValueOnce({ success: false, error: "Connection failed" });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/reminder/send-email",
+        payload: {
+          email: "test@example.com",
+          lowStock: [
+            { name: "Aspirin", medsLeft: 5, daysLeft: 3, depletionDate: "2025-01-03" },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(500);
+      expect(response.json().error).toContain("Push:");
+    });
+
+    it("should handle push with empty meds using German translations", async () => {
+      await testClient.execute({
+        sql: `INSERT INTO user_settings (user_id, email_enabled, shoutrrr_enabled, shoutrrr_url, language) VALUES (?, 0, 1, 'ntfy://localhost/test', 'de')`,
+        args: [999999999],
+      });
+
+      mockSendShoutrrr.mockResolvedValueOnce({ success: true });
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/reminder/send-email",
+        payload: {
+          email: "test@example.com",
+          lowStock: [
+            { name: "Aspirin", medsLeft: 0, daysLeft: 0, depletionDate: null },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(mockSendShoutrrr).toHaveBeenCalledTimes(1);
+      
+      // Check German translations are used
+      const [title, message] = mockSendShoutrrr.mock.calls[0].slice(1);
+      expect(title).toContain("Leer");
+    });
+
+    it("should handle push exception gracefully", async () => {
+      await testClient.execute({
+        sql: `INSERT INTO user_settings (user_id, email_enabled, shoutrrr_enabled, shoutrrr_url, language) VALUES (?, 0, 1, 'ntfy://localhost/test', 'en')`,
+        args: [999999999],
+      });
+
+      mockSendShoutrrr.mockRejectedValueOnce(new Error("Network error"));
+
+      const response = await app.inject({
+        method: "POST",
+        url: "/reminder/send-email",
+        payload: {
+          email: "test@example.com",
+          lowStock: [
+            { name: "Aspirin", medsLeft: 5, daysLeft: 3, depletionDate: "2025-01-03" },
+          ],
+        },
+      });
+
+      expect(response.statusCode).toBe(500);
+      expect(response.json().error).toContain("Push:");
+      expect(response.json().error).toContain("Network error");
+    });
+  });
+});

backend/src/test/server.test.ts

@@ -0,0 +1,499 @@
+import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
+import Fastify from "fastify";
+import cors from "@fastify/cors";
+import sensible from "@fastify/sensible";
+import cookie from "@fastify/cookie";
+import { mkdirSync, rmSync, existsSync } from "fs";
+import { resolve } from "path";
+import { tmpdir } from "os";
+
+// Import from utils to avoid index.ts import side effects (server start)
+import {
+  parseCorsOrigins,
+  buildBaseCookieOptions,
+  buildRefreshCookieOptions,
+  buildAppConfig,
+  ensureImagesDirectory,
+  getJwtConfig,
+} from "../utils/server-config.js";
+
+describe("Index.ts Utility Functions", () => {
+  describe("parseCorsOrigins", () => {
+    it("should parse comma-separated origins", () => {
+      const origins = parseCorsOrigins("http://localhost:5173,http://localhost:4173");
+      expect(origins).toHaveLength(2);
+      expect(origins[0]).toBe("http://localhost:5173");
+      expect(origins[1]).toBe("http://localhost:4173");
+    });
+
+    it("should handle single origin", () => {
+      const origins = parseCorsOrigins("https://myapp.example.com");
+      expect(origins).toHaveLength(1);
+      expect(origins[0]).toBe("https://myapp.example.com");
+    });
+
+    it("should filter out empty strings", () => {
+      const origins = parseCorsOrigins("http://localhost:5173,,http://localhost:4173,");
+      expect(origins).toHaveLength(2);
+    });
+
+    it("should trim whitespace", () => {
+      const origins = parseCorsOrigins(" http://localhost:5173 , http://localhost:4173 ");
+      expect(origins).toEqual(["http://localhost:5173", "http://localhost:4173"]);
+    });
+
+    it("should return empty array for empty string", () => {
+      const origins = parseCorsOrigins("");
+      expect(origins).toHaveLength(0);
+    });
+  });
+
+  describe("buildBaseCookieOptions", () => {
+    it("should set secure=true in production", () => {
+      const options = buildBaseCookieOptions(15, true);
+      expect(options.secure).toBe(true);
+      expect(options.httpOnly).toBe(true);
+      expect(options.sameSite).toBe("lax");
+      expect(options.path).toBe("/");
+    });
+
+    it("should set secure=false in development", () => {
+      const options = buildBaseCookieOptions(15, false);
+      expect(options.secure).toBe(false);
+    });
+
+    it("should calculate maxAge in seconds from minutes", () => {
+      const options = buildBaseCookieOptions(15, false);
+      expect(options.maxAge).toBe(15 * 60); // 900 seconds
+    });
+
+    it("should handle custom TTL values", () => {
+      const options = buildBaseCookieOptions(30, false);
+      expect(options.maxAge).toBe(30 * 60); // 1800 seconds
+    });
+  });
+
+  describe("buildRefreshCookieOptions", () => {
+    it("should extend base options with longer maxAge", () => {
+      const base = buildBaseCookieOptions(15, false);
+      const refresh = buildRefreshCookieOptions(base, 7);
+      
+      expect(refresh.httpOnly).toBe(true);
+      expect(refresh.sameSite).toBe("lax");
+      expect(refresh.maxAge).toBe(7 * 24 * 60 * 60); // 7 days in seconds
+    });
+
+    it("should calculate 14 days correctly", () => {
+      const base = buildBaseCookieOptions(15, false);
+      const refresh = buildRefreshCookieOptions(base, 14);
+      expect(refresh.maxAge).toBe(14 * 24 * 60 * 60); // 1209600 seconds
+    });
+
+    it("should preserve secure flag from base", () => {
+      const base = buildBaseCookieOptions(15, true);
+      const refresh = buildRefreshCookieOptions(base, 7);
+      expect(refresh.secure).toBe(true);
+    });
+  });
+
+  describe("buildAppConfig", () => {
+    it("should build complete config object", () => {
+      const config = buildAppConfig({
+        jwtSecret: "test-jwt-secret",
+        refreshSecret: "test-refresh-secret",
+        accessTtlMinutes: 15,
+        refreshTtlDays: 7,
+        isProduction: false,
+      });
+
+      expect(config.accessSecret).toBe("test-jwt-secret");
+      expect(config.refreshSecret).toBe("test-refresh-secret");
+      expect(config.accessTtl).toBe(15);
+      expect(config.refreshTtl).toBe(7);
+      expect(config.cookieOptions).toBeDefined();
+      expect(config.refreshCookieOptions).toBeDefined();
+    });
+
+    it("should use empty strings for missing secrets", () => {
+      const config = buildAppConfig({
+        accessTtlMinutes: 15,
+        refreshTtlDays: 7,
+        isProduction: false,
+      });
+
+      expect(config.accessSecret).toBe("");
+      expect(config.refreshSecret).toBe("");
+    });
+
+    it("should set secure cookies in production", () => {
+      const config = buildAppConfig({
+        accessTtlMinutes: 15,
+        refreshTtlDays: 7,
+        isProduction: true,
+      });
+
+      expect(config.cookieOptions.secure).toBe(true);
+      expect(config.refreshCookieOptions.secure).toBe(true);
+    });
+  });
+
+  describe("ensureImagesDirectory", () => {
+    const testDir = resolve(tmpdir(), `test-images-dir-${Date.now()}`);
+
+    afterEach(() => {
+      try {
+        if (existsSync(testDir)) {
+          rmSync(testDir, { recursive: true, force: true });
+        }
+      } catch {
+        // ignore cleanup errors
+      }
+    });
+
+    it("should create directory if it does not exist", () => {
+      const imagesDir = ensureImagesDirectory(testDir);
+      expect(existsSync(imagesDir)).toBe(true);
+      expect(imagesDir).toContain("data/images");
+    });
+
+    it("should return path if directory already exists", () => {
+      const firstCall = ensureImagesDirectory(testDir);
+      const secondCall = ensureImagesDirectory(testDir);
+      expect(firstCall).toBe(secondCall);
+    });
+  });
+
+  describe("getJwtConfig", () => {
+    it("should return real secret when auth enabled with secret", () => {
+      const config = getJwtConfig(true, "my-super-secret");
+      expect(config.secret).toBe("my-super-secret");
+      expect(config.cookie.cookieName).toBe("access_token");
+      expect(config.cookie.signed).toBe(false);
+    });
+
+    it("should return dummy secret when auth disabled", () => {
+      const config = getJwtConfig(false, undefined);
+      expect(config.secret).toBe("auth-disabled-no-secret-needed");
+    });
+
+    it("should return dummy secret when auth enabled but no secret", () => {
+      const config = getJwtConfig(true, undefined);
+      expect(config.secret).toBe("auth-disabled-no-secret-needed");
+    });
+
+    it("should return dummy secret when auth enabled with empty secret", () => {
+      const config = getJwtConfig(true, "");
+      expect(config.secret).toBe("auth-disabled-no-secret-needed");
+    });
+  });
+});
+
+// Test the server bootstrap logic without starting the actual server
+
+describe("Server Bootstrap", () => {
+  describe("Fastify App Configuration", () => {
+    it("should create a Fastify instance with logger", async () => {
+      const app = Fastify({
+        logger: {
+          level: "silent", // Disable logging for tests
+        },
+      });
+
+      expect(app).toBeDefined();
+      expect(app.log).toBeDefined();
+      
+      await app.close();
+    });
+
+    it("should register sensible plugin", async () => {
+      const app = Fastify({ logger: false });
+      await app.register(sensible);
+      
+      // Sensible adds error helpers
+      expect(app.httpErrors).toBeDefined();
+      expect(app.httpErrors.notFound).toBeDefined();
+      
+      await app.close();
+    });
+
+    it("should register cors plugin with multiple origins", async () => {
+      const origins = ["http://localhost:5173", "http://localhost:4173"];
+      
+      const app = Fastify({ logger: false });
+      await app.register(cors, { origin: origins, credentials: true });
+      
+      // Add a test route
+      app.get("/test", async () => ({ ok: true }));
+      
+      await app.ready();
+      
+      // Test CORS headers
+      const response = await app.inject({
+        method: "GET",
+        url: "/test",
+        headers: {
+          origin: "http://localhost:5173",
+        },
+      });
+      
+      expect(response.headers["access-control-allow-origin"]).toBe("http://localhost:5173");
+      expect(response.headers["access-control-allow-credentials"]).toBe("true");
+      
+      await app.close();
+    });
+
+    it("should register cookie plugin", async () => {
+      const app = Fastify({ logger: false });
+      await app.register(cookie, { secret: "test-cookie-secret" });
+      
+      // Add a test route that sets a cookie
+      app.get("/set-cookie", async (request, reply) => {
+        reply.setCookie("test", "value", { path: "/" });
+        return { ok: true };
+      });
+      
+      await app.ready();
+      
+      const response = await app.inject({
+        method: "GET",
+        url: "/set-cookie",
+      });
+      
+      expect(response.headers["set-cookie"]).toBeDefined();
+      
+      await app.close();
+    });
+  });
+
+  describe("Config Decorator", () => {
+    it("should create config with auth settings", async () => {
+      const app = Fastify({ logger: false });
+      
+      const accessTtlMinutes = 15;
+      const refreshTtlDays = 7;
+      
+      const baseCookieOptions = {
+        httpOnly: true,
+        sameSite: "lax" as const,
+        secure: false, // test environment
+        path: "/",
+        maxAge: accessTtlMinutes * 60,
+      };
+      
+      const refreshCookieOptions = {
+        ...baseCookieOptions,
+        maxAge: refreshTtlDays * 24 * 60 * 60,
+      };
+      
+      app.decorate("config", {
+        accessSecret: "test-jwt-secret",
+        refreshSecret: "test-refresh-secret",
+        accessTtl: accessTtlMinutes,
+        refreshTtl: refreshTtlDays,
+        cookieOptions: baseCookieOptions,
+        refreshCookieOptions,
+      });
+      
+      expect((app as any).config.accessTtl).toBe(15);
+      expect((app as any).config.refreshTtl).toBe(7);
+      expect((app as any).config.cookieOptions.httpOnly).toBe(true);
+      expect((app as any).config.refreshCookieOptions.maxAge).toBe(7 * 24 * 60 * 60);
+      
+      await app.close();
+    });
+
+    it("should calculate cookie maxAge correctly", () => {
+      const accessTtlMinutes = 30;
+      const refreshTtlDays = 14;
+      
+      const accessMaxAge = accessTtlMinutes * 60;
+      const refreshMaxAge = refreshTtlDays * 24 * 60 * 60;
+      
+      expect(accessMaxAge).toBe(1800); // 30 minutes in seconds
+      expect(refreshMaxAge).toBe(1209600); // 14 days in seconds
+    });
+  });
+
+  describe("CORS Origins Parsing", () => {
+    it("should parse comma-separated origins", () => {
+      const originsEnv = "http://localhost:5173,http://localhost:4173";
+      const origins = originsEnv.split(",").map((o) => o.trim()).filter(Boolean);
+      
+      expect(origins).toHaveLength(2);
+      expect(origins[0]).toBe("http://localhost:5173");
+      expect(origins[1]).toBe("http://localhost:4173");
+    });
+
+    it("should handle single origin", () => {
+      const originsEnv = "https://myapp.example.com";
+      const origins = originsEnv.split(",").map((o) => o.trim()).filter(Boolean);
+      
+      expect(origins).toHaveLength(1);
+      expect(origins[0]).toBe("https://myapp.example.com");
+    });
+
+    it("should filter out empty strings", () => {
+      const originsEnv = "http://localhost:5173,,http://localhost:4173,";
+      const origins = originsEnv.split(",").map((o) => o.trim()).filter(Boolean);
+      
+      expect(origins).toHaveLength(2);
+    });
+
+    it("should trim whitespace", () => {
+      const originsEnv = " http://localhost:5173 , http://localhost:4173 ";
+      const origins = originsEnv.split(",").map((o) => o.trim()).filter(Boolean);
+      
+      expect(origins).toEqual(["http://localhost:5173", "http://localhost:4173"]);
+    });
+  });
+
+  describe("Route Registration", () => {
+    it("should register multiple route plugins", async () => {
+      const app = Fastify({ logger: false });
+      
+      // Mock route plugins
+      const healthRoutes = async (app: any) => {
+        app.get("/health", async () => ({ status: "ok" }));
+      };
+      
+      const authRoutes = async (app: any) => {
+        app.post("/auth/login", async () => ({ token: "mock" }));
+      };
+      
+      const medicationRoutes = async (app: any) => {
+        app.get("/medications", async () => []);
+      };
+      
+      await app.register(healthRoutes);
+      await app.register(authRoutes);
+      await app.register(medicationRoutes);
+      
+      await app.ready();
+      
+      // Verify routes are registered
+      const routes = app.printRoutes();
+      expect(routes).toContain("health");
+      expect(routes).toContain("auth/login");
+      expect(routes).toContain("medications");
+      
+      await app.close();
+    });
+  });
+
+  describe("Server Startup", () => {
+    it("should listen on specified port", async () => {
+      const app = Fastify({ logger: false });
+      
+      app.get("/test", async () => ({ ok: true }));
+      
+      // Use port 0 to get a random available port
+      const address = await app.listen({ port: 0, host: "127.0.0.1" });
+      
+      expect(address).toContain("127.0.0.1");
+      
+      await app.close();
+    });
+
+    it("should handle listen errors gracefully", async () => {
+      const app = Fastify({ logger: false });
+      
+      // Try to listen on an invalid port
+      await expect(
+        app.listen({ port: -1, host: "127.0.0.1" })
+      ).rejects.toThrow();
+      
+      await app.close();
+    });
+  });
+
+  describe("Images Directory", () => {
+    it("should construct images directory path correctly", () => {
+      const resolve = (base: string, ...paths: string[]) => {
+        return [base, ...paths].join("/").replace(/\/+/g, "/");
+      };
+      
+      const cwd = "/app";
+      const imagesDir = resolve(cwd, "data/images");
+      
+      expect(imagesDir).toBe("/app/data/images");
+    });
+  });
+});
+
+describe("Cookie Options", () => {
+  describe("Production vs Development", () => {
+    it("should set secure=true in production", () => {
+      const isProduction = true;
+      
+      const cookieOptions = {
+        httpOnly: true,
+        sameSite: "lax" as const,
+        secure: isProduction,
+        path: "/",
+      };
+      
+      expect(cookieOptions.secure).toBe(true);
+    });
+
+    it("should set secure=false in development", () => {
+      const isProduction = false;
+      
+      const cookieOptions = {
+        httpOnly: true,
+        sameSite: "lax" as const,
+        secure: isProduction,
+        path: "/",
+      };
+      
+      expect(cookieOptions.secure).toBe(false);
+    });
+  });
+});
+
+describe("Rate Limiting", () => {
+  it("should configure rate limit settings", () => {
+    const rateLimitConfig = {
+      max: 100,
+      timeWindow: "1 minute",
+    };
+    
+    expect(rateLimitConfig.max).toBe(100);
+    expect(rateLimitConfig.timeWindow).toBe("1 minute");
+  });
+});
+
+describe("JWT Configuration", () => {
+  it("should configure JWT with auth enabled", () => {
+    const authEnabled = true;
+    const jwtSecret = "my-super-secret-jwt-key";
+    
+    const jwtConfig = {
+      secret: authEnabled && jwtSecret ? jwtSecret : "auth-disabled-no-secret-needed",
+      cookie: { cookieName: "access_token", signed: false },
+    };
+    
+    expect(jwtConfig.secret).toBe(jwtSecret);
+    expect(jwtConfig.cookie.cookieName).toBe("access_token");
+    expect(jwtConfig.cookie.signed).toBe(false);
+  });
+
+  it("should use dummy secret with auth disabled", () => {
+    const authEnabled = false;
+    const jwtSecret = undefined;
+    
+    const jwtConfig = {
+      secret: authEnabled && jwtSecret ? jwtSecret : "auth-disabled-no-secret-needed",
+      cookie: { cookieName: "access_token", signed: false },
+    };
+    
+    expect(jwtConfig.secret).toBe("auth-disabled-no-secret-needed");
+  });
+});
+
+describe("Multipart Configuration", () => {
+  it("should set file size limit to 10MB", () => {
+    const fileSizeLimit = 10 * 1024 * 1024;
+    
+    expect(fileSizeLimit).toBe(10485760);
+  });
+});

backend/src/test/services.test.ts

@@ -0,0 +1,618 @@
+import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
+import { readFileSync, writeFileSync, existsSync, unlinkSync } from "fs";
+import { resolve } from "path";
+import { tmpdir } from "os";
+
+// Import actual utility functions from scheduler-utils
+import {
+  getTimezone,
+  formatInTimezone,
+  getCurrentHourInTimezone,
+  getTodayInTimezone,
+  getNextScheduledTime,
+  getMsUntilNextCheck,
+  parseBlisters,
+  parseTakenByJson,
+  calculateDailyUsage,
+  calculateDepletionInfo,
+  getUpcomingIntakes,
+  getTodaysIntakes,
+  createDefaultReminderState,
+  createDefaultIntakeReminderState,
+  parseReminderState,
+  parseIntakeReminderState,
+  cleanOldIntakeReminders,
+  type Blister,
+  type ReminderState,
+  type IntakeReminderState,
+  type UpcomingIntake,
+} from "../utils/scheduler-utils.js";
+
+describe("Scheduler Utils - Timezone Functions", () => {
+  let originalTz: string | undefined;
+
+  beforeEach(() => {
+    originalTz = process.env.TZ;
+  });
+
+  afterEach(() => {
+    if (originalTz !== undefined) {
+      process.env.TZ = originalTz;
+    } else {
+      delete process.env.TZ;
+    }
+  });
+
+  describe("getTimezone", () => {
+    it("should return TZ env variable when set", () => {
+      process.env.TZ = "America/New_York";
+      expect(getTimezone()).toBe("America/New_York");
+    });
+
+    it("should return UTC when TZ not set", () => {
+      delete process.env.TZ;
+      expect(getTimezone()).toBe("UTC");
+    });
+
+    it("should handle Europe/Berlin timezone", () => {
+      process.env.TZ = "Europe/Berlin";
+      expect(getTimezone()).toBe("Europe/Berlin");
+    });
+  });
+
+  describe("formatInTimezone", () => {
+    it("should format date in given timezone", () => {
+      const date = new Date("2025-12-30T12:00:00.000Z");
+      const formatted = formatInTimezone(date, "UTC");
+      expect(formatted).toContain("30");
+      expect(formatted).toContain("12");
+    });
+
+    it("should use process.env.TZ when no tz provided", () => {
+      process.env.TZ = "UTC";
+      const date = new Date("2025-12-30T15:30:00.000Z");
+      const formatted = formatInTimezone(date);
+      expect(formatted).toContain("15:30");
+    });
+  });
+
+  describe("getCurrentHourInTimezone", () => {
+    it("should return a valid hour (0-23)", () => {
+      process.env.TZ = "UTC";
+      const hour = getCurrentHourInTimezone();
+      expect(hour).toBeGreaterThanOrEqual(0);
+      expect(hour).toBeLessThanOrEqual(23);
+    });
+
+    it("should respect timezone parameter", () => {
+      const hourUtc = getCurrentHourInTimezone("UTC");
+      expect(hourUtc).toBeGreaterThanOrEqual(0);
+      expect(hourUtc).toBeLessThanOrEqual(23);
+    });
+  });
+
+  describe("getTodayInTimezone", () => {
+    it("should return date in YYYY-MM-DD format", () => {
+      process.env.TZ = "UTC";
+      const today = getTodayInTimezone();
+      expect(today).toMatch(/^\d{4}-\d{2}-\d{2}$/);
+    });
+
+    it("should return a valid date", () => {
+      process.env.TZ = "UTC";
+      const today = getTodayInTimezone();
+      const date = new Date(today);
+      expect(date.toString()).not.toBe("Invalid Date");
+    });
+
+    it("should respect timezone parameter", () => {
+      const today = getTodayInTimezone("UTC");
+      expect(today).toMatch(/^\d{4}-\d{2}-\d{2}$/);
+    });
+  });
+
+  describe("getNextScheduledTime", () => {
+    it("should return a Date object", () => {
+      const next = getNextScheduledTime(6, "UTC");
+      expect(next).toBeInstanceOf(Date);
+    });
+
+    it("should return a time in the future", () => {
+      // Use hour 0 to minimize chance of being exactly at that hour
+      const next = getNextScheduledTime(0, "UTC");
+      expect(next.getTime()).toBeGreaterThan(Date.now() - 60 * 60 * 1000); // Within 1 hour of now or future
+    });
+
+    it("should schedule for the given hour", () => {
+      const next = getNextScheduledTime(10, "UTC");
+      const hourInUtc = parseInt(next.toLocaleString("en-US", { timeZone: "UTC", hour: "numeric", hour12: false }), 10);
+      expect(hourInUtc).toBe(10);
+    });
+  });
+
+  describe("getMsUntilNextCheck", () => {
+    it("should return a positive number (or very small negative within tolerance)", () => {
+      const ms = getMsUntilNextCheck(6, "UTC");
+      // Could be slightly negative if we're right at the scheduled time
+      expect(ms).toBeGreaterThan(-60000);
+    });
+
+    it("should be less than or equal to 24 hours", () => {
+      const ms = getMsUntilNextCheck(6, "UTC");
+      const maxMs = 24 * 60 * 60 * 1000 + 60000; // 24h + 1min tolerance
+      expect(ms).toBeLessThanOrEqual(maxMs);
+    });
+  });
+});
+
+describe("Scheduler Utils - Blister Parsing", () => {
+  describe("parseBlisters", () => {
+    it("should parse valid blister JSON arrays", () => {
+      const row = {
+        usageJson: "[1, 2, 0.5]",
+        everyJson: "[1, 2, 7]",
+        startJson: '["2025-01-01T08:00", "2025-01-01T20:00", "2025-01-01T12:00"]',
+      };
+
+      const blisters = parseBlisters(row);
+      
+      expect(blisters).toHaveLength(3);
+      expect(blisters[0]).toEqual({ usage: 1, every: 1, start: "2025-01-01T08:00" });
+      expect(blisters[1]).toEqual({ usage: 2, every: 2, start: "2025-01-01T20:00" });
+      expect(blisters[2]).toEqual({ usage: 0.5, every: 7, start: "2025-01-01T12:00" });
+    });
+
+    it("should handle arrays of different lengths (use shortest)", () => {
+      const row = {
+        usageJson: "[1, 2]",
+        everyJson: "[1]",
+        startJson: '["2025-01-01T08:00", "2025-01-01T20:00", "2025-01-01T12:00"]',
+      };
+
+      const blisters = parseBlisters(row);
+      
+      expect(blisters).toHaveLength(1);
+      expect(blisters[0]).toEqual({ usage: 1, every: 1, start: "2025-01-01T08:00" });
+    });
+
+    it("should return empty array for empty JSON arrays", () => {
+      const row = {
+        usageJson: "[]",
+        everyJson: "[]",
+        startJson: "[]",
+      };
+
+      const blisters = parseBlisters(row);
+      expect(blisters).toHaveLength(0);
+    });
+
+    it("should return empty array for invalid JSON", () => {
+      const row = {
+        usageJson: "invalid",
+        everyJson: "[1]",
+        startJson: '["2025-01-01T08:00"]',
+      };
+
+      const blisters = parseBlisters(row);
+      expect(blisters).toHaveLength(0);
+    });
+
+    it("should return empty array for non-array JSON", () => {
+      const row = {
+        usageJson: '{"usage": 1}',
+        everyJson: "[1]",
+        startJson: '["2025-01-01T08:00"]',
+      };
+
+      const blisters = parseBlisters(row);
+      expect(blisters).toHaveLength(0);
+    });
+  });
+
+  describe("parseTakenByJson", () => {
+    it("should return empty array for null input", () => {
+      expect(parseTakenByJson(null)).toEqual([]);
+    });
+
+    it("should return empty array for undefined input", () => {
+      expect(parseTakenByJson(undefined)).toEqual([]);
+    });
+
+    it("should return empty array for empty string", () => {
+      expect(parseTakenByJson("")).toEqual([]);
+    });
+
+    it("should parse valid JSON array of strings", () => {
+      expect(parseTakenByJson('["Alice", "Bob"]')).toEqual(["Alice", "Bob"]);
+    });
+
+    it("should return empty array for empty JSON array", () => {
+      expect(parseTakenByJson("[]")).toEqual([]);
+    });
+
+    it("should filter out non-string values", () => {
+      expect(parseTakenByJson('[1, "Alice", null, "Bob", true]')).toEqual(["Alice", "Bob"]);
+    });
+
+    it("should filter out empty strings", () => {
+      expect(parseTakenByJson('["Alice", "", "Bob", "  "]')).toEqual(["Alice", "Bob"]);
+    });
+
+    it("should return empty array for invalid JSON", () => {
+      expect(parseTakenByJson("invalid json")).toEqual([]);
+    });
+
+    it("should return empty array for non-array JSON", () => {
+      expect(parseTakenByJson('{"name": "Alice"}')).toEqual([]);
+      expect(parseTakenByJson('"Alice"')).toEqual([]);
+      expect(parseTakenByJson("123")).toEqual([]);
+    });
+  });
+});
+
+describe("Scheduler Utils - Daily Usage Calculation", () => {
+  describe("calculateDailyUsage", () => {
+    it("should calculate daily usage for single daily dose", () => {
+      const blisters: Blister[] = [{ usage: 1, every: 1, start: "2025-01-01T08:00" }];
+      expect(calculateDailyUsage(blisters)).toBe(1);
+    });
+
+    it("should calculate daily usage for twice daily dose", () => {
+      const blisters: Blister[] = [
+        { usage: 1, every: 1, start: "2025-01-01T08:00" },
+        { usage: 1, every: 1, start: "2025-01-01T20:00" },
+      ];
+      expect(calculateDailyUsage(blisters)).toBe(2);
+    });
+
+    it("should calculate daily usage for weekly dose", () => {
+      const blisters: Blister[] = [{ usage: 1, every: 7, start: "2025-01-01T08:00" }];
+      expect(calculateDailyUsage(blisters)).toBeCloseTo(1/7, 5);
+    });
+
+    it("should calculate daily usage for mixed schedules", () => {
+      const blisters: Blister[] = [
+        { usage: 2, every: 1, start: "2025-01-01T08:00" },  // 2 per day
+        { usage: 1, every: 2, start: "2025-01-01T20:00" },  // 0.5 per day
+      ];
+      expect(calculateDailyUsage(blisters)).toBe(2.5);
+    });
+
+    it("should return 0 for empty blisters", () => {
+      expect(calculateDailyUsage([])).toBe(0);
+    });
+
+    it("should handle fractional usage amounts", () => {
+      const blisters: Blister[] = [{ usage: 0.5, every: 1, start: "2025-01-01T08:00" }];
+      expect(calculateDailyUsage(blisters)).toBe(0.5);
+    });
+  });
+});
+
+describe("Scheduler Utils - Depletion Calculation", () => {
+  describe("calculateDepletionInfo", () => {
+    it("should calculate days left correctly", () => {
+      const blisters: Blister[] = [{ usage: 1, every: 1, start: "2025-01-01T08:00" }];
+      const result = calculateDepletionInfo({ count: 30, blisters }, "en");
+      expect(result.daysLeft).toBe(30);
+      expect(result.depletionDate).toBeTruthy();
+    });
+
+    it("should calculate days left with multiple doses per day", () => {
+      const blisters: Blister[] = [
+        { usage: 1, every: 1, start: "2025-01-01T08:00" },
+        { usage: 1, every: 1, start: "2025-01-01T20:00" },
+      ];
+      const result = calculateDepletionInfo({ count: 30, blisters }, "en");
+      expect(result.daysLeft).toBe(15);
+    });
+
+    it("should return null when no blisters configured", () => {
+      const result = calculateDepletionInfo({ count: 30, blisters: [] }, "en");
+      expect(result.daysLeft).toBeNull();
+      expect(result.depletionDate).toBeNull();
+    });
+
+    it("should return null when usage is zero", () => {
+      const blisters: Blister[] = [{ usage: 0, every: 1, start: "2025-01-01T08:00" }];
+      const result = calculateDepletionInfo({ count: 30, blisters }, "en");
+      expect(result.daysLeft).toBeNull();
+    });
+
+    it("should floor the days left", () => {
+      // 10 pills / 3 per day = 3.33... days -> floors to 3
+      const blisters: Blister[] = [{ usage: 3, every: 1, start: "2025-01-01T08:00" }];
+      const result = calculateDepletionInfo({ count: 10, blisters }, "en");
+      expect(result.daysLeft).toBe(3);
+    });
+
+    it("should handle German language", () => {
+      const blisters: Blister[] = [{ usage: 1, every: 1, start: "2025-01-01T08:00" }];
+      const result = calculateDepletionInfo({ count: 10, blisters }, "de");
+      expect(result.depletionDate).toBeTruthy();
+      // German locale should be used
+    });
+  });
+});
+
+describe("Scheduler Utils - Upcoming Intakes", () => {
+  describe("getUpcomingIntakes", () => {
+    it("should return empty array when no intakes in window", () => {
+      const blisters: Blister[] = [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }];
+      // Set "now" to a time far from any scheduled intake
+      const now = new Date("2025-01-01T12:00:00.000Z").getTime();
+      
+      const result = getUpcomingIntakes("TestMed", blisters, 15, [], null, "en-US", "UTC", now);
+      expect(result).toEqual([]);
+    });
+
+    it("should find intake within reminder window", () => {
+      // Schedule intake at 08:00, check at 07:45 (15 minutes before)
+      const blisters: Blister[] = [{ usage: 2, every: 1, start: "2025-01-01T08:00:00.000Z" }];
+      const now = new Date("2025-01-01T07:45:00.000Z").getTime();
+      
+      const result = getUpcomingIntakes("TestMed", blisters, 15, ["Alice"], 500, "en-US", "UTC", now);
+      
+      expect(result).toHaveLength(1);
+      expect(result[0].medName).toBe("TestMed");
+      expect(result[0].usage).toBe(2);
+      expect(result[0].takenBy).toEqual(["Alice"]);
+      expect(result[0].pillWeightMg).toBe(500);
+    });
+
+    it("should skip blisters with zero interval", () => {
+      const blisters: Blister[] = [{ usage: 1, every: 0, start: "2025-01-01T08:00:00.000Z" }];
+      const now = new Date("2025-01-01T07:45:00.000Z").getTime();
+      
+      const result = getUpcomingIntakes("TestMed", blisters, 15, [], null, "en-US", "UTC", now);
+      expect(result).toEqual([]);
+    });
+
+    it("should handle multiple blisters", () => {
+      // Two intakes at 08:00 and 08:01
+      const blisters: Blister[] = [
+        { usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" },
+        { usage: 2, every: 1, start: "2025-01-01T08:01:00.000Z" },
+      ];
+      const now = new Date("2025-01-01T07:45:00.000Z").getTime();
+      
+      const result = getUpcomingIntakes("TestMed", blisters, 15, [], null, "en-US", "UTC", now);
+      
+      // Both should be found as they're within the window
+      expect(result.length).toBeGreaterThanOrEqual(1);
+    });
+  });
+
+  describe("getTodaysIntakes", () => {
+    it("should return all intakes for today", () => {
+      // Daily medication at 08:00 starting yesterday
+      const blisters: Blister[] = [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }];
+      
+      // Get intakes for 2025-01-02 (today's intake should be at 08:00)
+      const result = getTodaysIntakes("TestMed", blisters, [], null, "en-US", "UTC");
+      
+      expect(result.length).toBeGreaterThanOrEqual(1);
+      const intake = result.find(i => i.intakeTime.getUTCHours() === 8);
+      expect(intake).toBeDefined();
+      expect(intake?.medName).toBe("TestMed");
+      expect(intake?.usage).toBe(1);
+    });
+
+    it("should include past intakes from today", () => {
+      // Medication at 00:01 today (definitely in the past)
+      const todayMidnight = new Date();
+      todayMidnight.setUTCHours(0, 1, 0, 0);
+      
+      const blisters: Blister[] = [{ 
+        usage: 2, 
+        every: 1, 
+        start: todayMidnight.toISOString() 
+      }];
+      
+      const result = getTodaysIntakes("PastMed", blisters, ["Bob"], 250, "en-US", "UTC");
+      
+      expect(result).toHaveLength(1);
+      expect(result[0].medName).toBe("PastMed");
+      expect(result[0].usage).toBe(2);
+      expect(result[0].takenBy).toEqual(["Bob"]);
+      expect(result[0].pillWeightMg).toBe(250);
+    });
+
+    it("should handle multiple intakes per day", () => {
+      // Two intakes today: morning and evening
+      const today = new Date();
+      const morning = new Date(today);
+      morning.setUTCHours(8, 0, 0, 0);
+      const evening = new Date(today);
+      evening.setUTCHours(20, 0, 0, 0);
+      
+      const blisters: Blister[] = [
+        { usage: 1, every: 1, start: morning.toISOString() },
+        { usage: 1, every: 1, start: evening.toISOString() },
+      ];
+      
+      const result = getTodaysIntakes("MultiMed", blisters, [], null, "en-US", "UTC");
+      
+      expect(result.length).toBeGreaterThanOrEqual(2);
+    });
+
+    it("should not include intakes from other days", () => {
+      // Weekly medication on a different day of week
+      const lastWeek = new Date();
+      lastWeek.setDate(lastWeek.getDate() - 7);
+      
+      const blisters: Blister[] = [{ 
+        usage: 1, 
+        every: 7, 
+        start: lastWeek.toISOString() 
+      }];
+      
+      // If today is not the same day of week, should return empty
+      const result = getTodaysIntakes("WeeklyMed", blisters, [], null, "en-US", "UTC");
+      
+      // This test might return 0 or 1 depending on the day
+      expect(Array.isArray(result)).toBe(true);
+    });
+
+    it("should handle timezone correctly", () => {
+      // 23:00 in Europe/Berlin on a specific date
+      const blisters: Blister[] = [{ 
+        usage: 1, 
+        every: 1, 
+        start: "2025-01-01T22:00:00.000Z" // 23:00 Berlin time
+      }];
+      
+      const result = getTodaysIntakes("TzMed", blisters, [], null, "de-DE", "Europe/Berlin");
+      
+      expect(Array.isArray(result)).toBe(true);
+      if (result.length > 0) {
+        expect(result[0].intakeTimeStr).toContain("23:");
+      }
+    });
+  });
+});
+
+describe("Scheduler Utils - State Management", () => {
+  describe("createDefaultReminderState", () => {
+    it("should create default reminder state", () => {
+      const state = createDefaultReminderState();
+      expect(state.lastAutoEmailSent).toBeNull();
+      expect(state.lastAutoEmailDate).toBeNull();
+      expect(state.notifiedMedications).toEqual([]);
+      expect(state.nextScheduledCheck).toBeNull();
+      expect(state.lastNotificationType).toBeNull();
+      expect(state.lastNotificationChannel).toBeNull();
+    });
+  });
+
+  describe("createDefaultIntakeReminderState", () => {
+    it("should create default intake reminder state", () => {
+      const state = createDefaultIntakeReminderState();
+      expect(state.reminders).toEqual({});
+    });
+  });
+
+  describe("parseReminderState", () => {
+    it("should parse valid JSON", () => {
+      const json = JSON.stringify({
+        lastAutoEmailSent: "2025-12-30T10:00:00.000Z",
+        lastAutoEmailDate: "2025-12-30",
+        notifiedMedications: ["med1", "med2"],
+        nextScheduledCheck: "2025-12-31T06:00:00.000Z",
+        lastNotificationType: "stock",
+        lastNotificationChannel: "email",
+      });
+      
+      const state = parseReminderState(json);
+      expect(state.lastAutoEmailSent).toBe("2025-12-30T10:00:00.000Z");
+      expect(state.lastAutoEmailDate).toBe("2025-12-30");
+      expect(state.notifiedMedications).toEqual(["med1", "med2"]);
+      expect(state.lastNotificationType).toBe("stock");
+      expect(state.lastNotificationChannel).toBe("email");
+    });
+
+    it("should handle partial state with defaults", () => {
+      const json = JSON.stringify({ lastAutoEmailSent: "2025-12-30T10:00:00.000Z" });
+      
+      const state = parseReminderState(json);
+      expect(state.lastAutoEmailSent).toBe("2025-12-30T10:00:00.000Z");
+      expect(state.lastAutoEmailDate).toBeNull();
+      expect(state.notifiedMedications).toEqual([]);
+    });
+
+    it("should return defaults for invalid JSON", () => {
+      const state = parseReminderState("invalid json {{{");
+      expect(state.lastAutoEmailSent).toBeNull();
+      expect(state.notifiedMedications).toEqual([]);
+    });
+  });
+
+  describe("parseIntakeReminderState", () => {
+    it("should parse valid new format JSON", () => {
+      const json = JSON.stringify({ 
+        reminders: { 
+          "med1:123": { firstSentAt: 1000, lastSentAt: 2000, sendCount: 2 },
+          "med2:456": { firstSentAt: 3000, lastSentAt: 3000, sendCount: 1 }
+        } 
+      });
+      
+      const state = parseIntakeReminderState(json);
+      expect(Object.keys(state.reminders)).toHaveLength(2);
+      expect(state.reminders["med1:123"].sendCount).toBe(2);
+    });
+    
+    it("should convert old array format to new format", () => {
+      const json = JSON.stringify({ sentReminders: ["med1:123", "med2:456"] });
+      
+      const state = parseIntakeReminderState(json);
+      expect(Object.keys(state.reminders)).toHaveLength(2);
+      expect(state.reminders["med1:123"]).toBeDefined();
+      expect(state.reminders["med1:123"].sendCount).toBe(1);
+    });
+
+    it("should return defaults for invalid JSON", () => {
+      const state = parseIntakeReminderState("invalid");
+      expect(state.reminders).toEqual({});
+    });
+
+    it("should handle missing reminders field", () => {
+      const state = parseIntakeReminderState("{}");
+      expect(state.reminders).toEqual({});
+    });
+  });
+
+  describe("cleanOldIntakeReminders", () => {
+    it("should remove entries from past days (timezone-aware)", () => {
+      const tz = "Europe/Berlin";
+      const now = new Date();
+      const today = new Date(now.toLocaleString("en-US", { timeZone: tz }));
+      today.setHours(12, 0, 0, 0);
+      
+      const yesterday = new Date(today);
+      yesterday.setDate(yesterday.getDate() - 1);
+      
+      const reminders = {
+        [`med1:${yesterday.getTime()}`]: { firstSentAt: yesterday.getTime(), lastSentAt: yesterday.getTime(), sendCount: 1 },
+        [`med2:${today.getTime()}`]: { firstSentAt: today.getTime(), lastSentAt: today.getTime(), sendCount: 1 },
+      };
+      
+      const cleaned = cleanOldIntakeReminders(reminders, tz);
+      
+      expect(Object.keys(cleaned)).toHaveLength(1);
+      expect(cleaned[`med2:${today.getTime()}`]).toBeDefined();
+    });
+
+    it("should keep all entries from today", () => {
+      const tz = "Europe/Berlin";
+      const now = new Date();
+      const morning = new Date(now.toLocaleString("en-US", { timeZone: tz }));
+      morning.setHours(8, 0, 0, 0);
+      
+      const evening = new Date(now.toLocaleString("en-US", { timeZone: tz }));
+      evening.setHours(20, 0, 0, 0);
+      
+      const reminders = {
+        [`med1:${morning.getTime()}`]: { firstSentAt: morning.getTime(), lastSentAt: morning.getTime(), sendCount: 1 },
+        [`med2:${evening.getTime()}`]: { firstSentAt: evening.getTime(), lastSentAt: evening.getTime(), sendCount: 1 },
+      };
+      
+      const cleaned = cleanOldIntakeReminders(reminders, tz);
+      expect(Object.keys(cleaned)).toHaveLength(2);
+    });
+
+    it("should handle empty reminders", () => {
+      const cleaned = cleanOldIntakeReminders({}, "Europe/Berlin");
+      expect(cleaned).toEqual({});
+    });
+
+    it("should handle malformed entries (invalid timestamp in key)", () => {
+      const reminders = {
+        "med1:invalid": { firstSentAt: 1000, lastSentAt: 1000, sendCount: 1 },
+        "med2:notanumber": { firstSentAt: 2000, lastSentAt: 2000, sendCount: 1 }
+      };
+      const cleaned = cleanOldIntakeReminders(reminders, "Europe/Berlin");
+      // NaN from parseInt will cause these to be filtered out (invalid < todayStart)
+      expect(Object.keys(cleaned)).toHaveLength(0);
+    });
+  });
+});

backend/src/test/settings.test.ts

@@ -0,0 +1,674 @@
+/**
+ * Tests for /settings API endpoints.
+ * Tests user settings CRUD operations.
+ */
+import { describe, it, expect, beforeAll, afterAll, beforeEach } from "vitest";
+import {
+  buildTestApp,
+  closeTestApp,
+  clearTestData,
+  createTestUser,
+  setUserSettings,
+  TestContext,
+} from "./setup.js";
+
+// =============================================================================
+// Route Registration
+// =============================================================================
+
+async function registerSettingsRoutes(ctx: TestContext) {
+  const { app, client } = ctx;
+
+  // GET /settings - Get user settings
+  app.get("/settings", async (request, reply) => {
+    const userId = 1;
+
+    const result = await client.execute({
+      sql: `SELECT * FROM user_settings WHERE user_id = ?`,
+      args: [userId],
+    });
+
+    if (result.rows.length === 0) {
+      // Return defaults
+      return {
+        emailEnabled: false,
+        notificationEmail: "",
+        emailStockReminders: true,
+        emailIntakeReminders: true,
+        shoutrrrEnabled: false,
+        shoutrrrUrl: "",
+        shoutrrrStockReminders: true,
+        shoutrrrIntakeReminders: true,
+        reminderDaysBefore: 7,
+        repeatDailyReminders: false,
+        skipRemindersForTakenDoses: false,
+        repeatRemindersEnabled: false,
+        reminderRepeatIntervalMinutes: 30,
+        maxNaggingReminders: 5,
+        lowStockDays: 30,
+        normalStockDays: 90,
+        highStockDays: 180,
+        expiryWarningDays: 90,
+        language: "en",
+        stockCalculationMode: "automatic",
+      };
+    }
+
+    const s = result.rows[0];
+    return {
+      emailEnabled: Boolean(s.email_enabled),
+      notificationEmail: s.notification_email || "",
+      emailStockReminders: Boolean(s.email_stock_reminders),
+      emailIntakeReminders: Boolean(s.email_intake_reminders),
+      shoutrrrEnabled: Boolean(s.shoutrrr_enabled),
+      shoutrrrUrl: s.shoutrrr_url || "",
+      shoutrrrStockReminders: Boolean(s.shoutrrr_stock_reminders),
+      shoutrrrIntakeReminders: Boolean(s.shoutrrr_intake_reminders),
+      reminderDaysBefore: s.reminder_days_before,
+      repeatDailyReminders: Boolean(s.repeat_daily_reminders),
+      skipRemindersForTakenDoses: Boolean(s.skip_reminders_for_taken_doses ?? false),
+      repeatRemindersEnabled: Boolean(s.repeat_reminders_enabled ?? false),
+      reminderRepeatIntervalMinutes: s.reminder_repeat_interval_minutes ?? 30,
+      maxNaggingReminders: s.max_nagging_reminders ?? 5,
+      lowStockDays: s.low_stock_days,
+      normalStockDays: s.normal_stock_days,
+      highStockDays: s.high_stock_days,
+      expiryWarningDays: s.expiry_warning_days,
+      language: s.language,
+      stockCalculationMode: s.stock_calculation_mode,
+    };
+  });
+
+  // PUT /settings - Update user settings
+  app.put<{
+    Body: {
+      emailEnabled?: boolean;
+      notificationEmail?: string;
+      emailStockReminders?: boolean;
+      emailIntakeReminders?: boolean;
+      shoutrrrEnabled?: boolean;
+      shoutrrrUrl?: string;
+      shoutrrrStockReminders?: boolean;
+      shoutrrrIntakeReminders?: boolean;
+      reminderDaysBefore?: number;
+      repeatDailyReminders?: boolean;
+      skipRemindersForTakenDoses?: boolean;
+      repeatRemindersEnabled?: boolean;
+      reminderRepeatIntervalMinutes?: number;
+      maxNaggingReminders?: number;
+      lowStockDays?: number;
+      normalStockDays?: number;
+      highStockDays?: number;
+      expiryWarningDays?: number;
+      language?: string;
+      stockCalculationMode?: "automatic" | "manual";
+    };
+  }>("/settings", async (request, reply) => {
+    const userId = 1;
+    const body = request.body || {};
+
+    // Validation
+    if (body.emailEnabled && !body.notificationEmail) {
+      return reply.status(400).send({ error: "Email address required when email is enabled" });
+    }
+    if (body.notificationEmail && !/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(body.notificationEmail)) {
+      return reply.status(400).send({ error: "Invalid email address" });
+    }
+    if (body.lowStockDays !== undefined && (body.lowStockDays < 1 || body.lowStockDays > 365)) {
+      return reply.status(400).send({ error: "lowStockDays must be between 1 and 365" });
+    }
+    if (body.language && !["en", "de"].includes(body.language)) {
+      return reply.status(400).send({ error: "Language must be 'en' or 'de'" });
+    }
+    if (body.stockCalculationMode && !["automatic", "manual"].includes(body.stockCalculationMode)) {
+      return reply.status(400).send({ error: "stockCalculationMode must be 'automatic' or 'manual'" });
+    }
+    if (body.reminderRepeatIntervalMinutes !== undefined && (body.reminderRepeatIntervalMinutes < 5 || body.reminderRepeatIntervalMinutes > 480)) {
+      return reply.status(400).send({ error: "reminderRepeatIntervalMinutes must be between 5 and 480" });
+    }
+    if (body.maxNaggingReminders !== undefined && (body.maxNaggingReminders < 1 || body.maxNaggingReminders > 20)) {
+      return reply.status(400).send({ error: "maxNaggingReminders must be between 1 and 20" });
+    }
+
+    // Check if settings exist
+    const existing = await client.execute({
+      sql: `SELECT id FROM user_settings WHERE user_id = ?`,
+      args: [userId],
+    });
+
+    if (existing.rows.length === 0) {
+      // Insert new settings
+      await client.execute({
+        sql: `INSERT INTO user_settings (
+          user_id, email_enabled, notification_email,
+          email_stock_reminders, email_intake_reminders,
+          shoutrrr_enabled, shoutrrr_url,
+          shoutrrr_stock_reminders, shoutrrr_intake_reminders,
+          reminder_days_before, repeat_daily_reminders, skip_reminders_for_taken_doses,
+          repeat_reminders_enabled, reminder_repeat_interval_minutes, max_nagging_reminders,
+          low_stock_days, normal_stock_days, high_stock_days,
+          expiry_warning_days, language, stock_calculation_mode
+        ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+        args: [
+          userId,
+          body.emailEnabled ? 1 : 0,
+          body.notificationEmail || null,
+          body.emailStockReminders !== false ? 1 : 0,
+          body.emailIntakeReminders !== false ? 1 : 0,
+          body.shoutrrrEnabled ? 1 : 0,
+          body.shoutrrrUrl || null,
+          body.shoutrrrStockReminders !== false ? 1 : 0,
+          body.shoutrrrIntakeReminders !== false ? 1 : 0,
+          body.reminderDaysBefore ?? 7,
+          body.repeatDailyReminders ? 1 : 0,
+          body.skipRemindersForTakenDoses ? 1 : 0,
+          body.repeatRemindersEnabled ? 1 : 0,
+          body.reminderRepeatIntervalMinutes ?? 30,
+          body.maxNaggingReminders ?? 5,
+          body.lowStockDays ?? 30,
+          body.normalStockDays ?? 90,
+          body.highStockDays ?? 180,
+          body.expiryWarningDays ?? 90,
+          body.language || "en",
+          body.stockCalculationMode || "automatic",
+        ],
+      });
+    } else {
+      // Update existing settings
+      await client.execute({
+        sql: `UPDATE user_settings SET
+          email_enabled = ?,
+          notification_email = ?,
+          email_stock_reminders = ?,
+          email_intake_reminders = ?,
+          shoutrrr_enabled = ?,
+          shoutrrr_url = ?,
+          shoutrrr_stock_reminders = ?,
+          shoutrrr_intake_reminders = ?,
+          reminder_days_before = ?,
+          repeat_daily_reminders = ?,
+          skip_reminders_for_taken_doses = ?,
+          repeat_reminders_enabled = ?,
+          reminder_repeat_interval_minutes = ?,
+          max_nagging_reminders = ?,
+          low_stock_days = ?,
+          normal_stock_days = ?,
+          high_stock_days = ?,
+          expiry_warning_days = ?,
+          language = ?,
+          stock_calculation_mode = ?,
+          updated_at = strftime('%s','now')
+        WHERE user_id = ?`,
+        args: [
+          body.emailEnabled ? 1 : 0,
+          body.notificationEmail || null,
+          body.emailStockReminders !== false ? 1 : 0,
+          body.emailIntakeReminders !== false ? 1 : 0,
+          body.shoutrrrEnabled ? 1 : 0,
+          body.shoutrrrUrl || null,
+          body.shoutrrrStockReminders !== false ? 1 : 0,
+          body.shoutrrrIntakeReminders !== false ? 1 : 0,
+          body.reminderDaysBefore ?? 7,
+          body.repeatDailyReminders ? 1 : 0,
+          body.skipRemindersForTakenDoses ? 1 : 0,
+          body.repeatRemindersEnabled ? 1 : 0,
+          body.reminderRepeatIntervalMinutes ?? 30,
+          body.maxNaggingReminders ?? 5,
+          body.lowStockDays ?? 30,
+          body.normalStockDays ?? 90,
+          body.highStockDays ?? 180,
+          body.expiryWarningDays ?? 90,
+          body.language || "en",
+          body.stockCalculationMode || "automatic",
+          userId,
+        ],
+      });
+    }
+
+    return { success: true };
+  });
+}
+
+// =============================================================================
+// Tests
+// =============================================================================
+
+describe("Settings API", () => {
+  let ctx: TestContext;
+  let userId: number;
+
+  beforeAll(async () => {
+    ctx = await buildTestApp();
+    await registerSettingsRoutes(ctx);
+    await ctx.app.ready();
+  });
+
+  afterAll(async () => {
+    await closeTestApp(ctx);
+  });
+
+  beforeEach(async () => {
+    await clearTestData(ctx.client);
+    await ctx.client.execute("DELETE FROM sqlite_sequence WHERE name='users'");
+    userId = await createTestUser(ctx.client, { username: "testuser" });
+  });
+
+  // ---------------------------------------------------------------------------
+  // GET /settings
+  // ---------------------------------------------------------------------------
+
+  describe("GET /settings", () => {
+    it("should return default settings for new user", async () => {
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/settings",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.emailEnabled).toBe(false);
+      expect(data.lowStockDays).toBe(30);
+      expect(data.normalStockDays).toBe(90);
+      expect(data.highStockDays).toBe(180);
+      expect(data.language).toBe("en");
+      expect(data.stockCalculationMode).toBe("automatic");
+    });
+
+    it("should return saved settings", async () => {
+      // Create settings first
+      await setUserSettings(ctx.client, {
+        userId,
+        stockCalculationMode: "manual",
+        lowStockDays: 14,
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/settings",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.stockCalculationMode).toBe("manual");
+      expect(data.lowStockDays).toBe(14);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // PUT /settings
+  // ---------------------------------------------------------------------------
+
+  describe("PUT /settings", () => {
+    it("should create settings for new user", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          language: "de",
+          lowStockDays: 14,
+          stockCalculationMode: "manual",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true });
+
+      // Verify
+      const result = await ctx.client.execute({
+        sql: `SELECT language, low_stock_days, stock_calculation_mode FROM user_settings WHERE user_id = ?`,
+        args: [userId],
+      });
+      expect(result.rows[0].language).toBe("de");
+      expect(result.rows[0].low_stock_days).toBe(14);
+      expect(result.rows[0].stock_calculation_mode).toBe("manual");
+    });
+
+    it("should update existing settings", async () => {
+      // Create initial settings
+      await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: { language: "en" },
+      });
+
+      // Update
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: { language: "de" },
+      });
+
+      expect(response.statusCode).toBe(200);
+
+      // Verify
+      const result = await ctx.client.execute({
+        sql: `SELECT language FROM user_settings WHERE user_id = ?`,
+        args: [userId],
+      });
+      expect(result.rows[0].language).toBe("de");
+    });
+
+    it("should enable email notifications", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          emailEnabled: true,
+          notificationEmail: "test@example.com",
+          emailStockReminders: true,
+          emailIntakeReminders: false,
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+
+      // Verify
+      const result = await ctx.client.execute({
+        sql: `SELECT email_enabled, notification_email, email_stock_reminders, email_intake_reminders 
+              FROM user_settings WHERE user_id = ?`,
+        args: [userId],
+      });
+      expect(result.rows[0].email_enabled).toBe(1);
+      expect(result.rows[0].notification_email).toBe("test@example.com");
+      expect(result.rows[0].email_stock_reminders).toBe(1);
+      expect(result.rows[0].email_intake_reminders).toBe(0);
+    });
+
+    it("should reject email enabled without email address", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          emailEnabled: true,
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().error).toBe("Email address required when email is enabled");
+    });
+
+    it("should reject invalid email address", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          notificationEmail: "not-an-email",
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().error).toBe("Invalid email address");
+    });
+
+    it("should reject invalid lowStockDays", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          lowStockDays: 0,
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().error).toBe("lowStockDays must be between 1 and 365");
+    });
+
+    it("should reject invalid language", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          language: "fr",
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().error).toBe("Language must be 'en' or 'de'");
+    });
+
+    it("should reject invalid stockCalculationMode", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          stockCalculationMode: "invalid",
+        },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json().error).toBe("stockCalculationMode must be 'automatic' or 'manual'");
+    });
+
+    it("should enable shoutrrr notifications", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          shoutrrrEnabled: true,
+          shoutrrrUrl: "ntfy://ntfy.sh/mytopic",
+          shoutrrrStockReminders: true,
+          shoutrrrIntakeReminders: true,
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+
+      // Verify
+      const result = await ctx.client.execute({
+        sql: `SELECT shoutrrr_enabled, shoutrrr_url FROM user_settings WHERE user_id = ?`,
+        args: [userId],
+      });
+      expect(result.rows[0].shoutrrr_enabled).toBe(1);
+      expect(result.rows[0].shoutrrr_url).toBe("ntfy://ntfy.sh/mytopic");
+    });
+
+    it("should update threshold settings", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          lowStockDays: 14,
+          normalStockDays: 60,
+          highStockDays: 120,
+          expiryWarningDays: 30,
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+
+      // Verify
+      const result = await ctx.client.execute({
+        sql: `SELECT low_stock_days, normal_stock_days, high_stock_days, expiry_warning_days 
+              FROM user_settings WHERE user_id = ?`,
+        args: [userId],
+      });
+      expect(result.rows[0].low_stock_days).toBe(14);
+      expect(result.rows[0].normal_stock_days).toBe(60);
+      expect(result.rows[0].high_stock_days).toBe(120);
+      expect(result.rows[0].expiry_warning_days).toBe(30);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Stock Calculation Mode
+  // ---------------------------------------------------------------------------
+
+  describe("Stock Calculation Mode", () => {
+    it("should switch to manual mode", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          stockCalculationMode: "manual",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+
+      const getResponse = await ctx.app.inject({
+        method: "GET",
+        url: "/settings",
+      });
+
+      expect(getResponse.json().stockCalculationMode).toBe("manual");
+    });
+
+    it("should switch back to automatic mode", async () => {
+      // Set to manual first
+      await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: { stockCalculationMode: "manual" },
+      });
+
+      // Switch back
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: { stockCalculationMode: "automatic" },
+      });
+
+      expect(response.statusCode).toBe(200);
+
+      const getResponse = await ctx.app.inject({
+        method: "GET",
+        url: "/settings",
+      });
+
+      expect(getResponse.json().stockCalculationMode).toBe("automatic");
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Repeat Reminders & Skip Reminders Settings
+  // ---------------------------------------------------------------------------
+
+  describe("Repeat Reminders Settings", () => {
+    it("should enable repeat reminders with interval", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          repeatRemindersEnabled: true,
+          reminderRepeatIntervalMinutes: 10,
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+
+      const getResponse = await ctx.app.inject({
+        method: "GET",
+        url: "/settings",
+      });
+
+      const settings = getResponse.json();
+      expect(settings.repeatRemindersEnabled).toBe(true);
+      expect(settings.reminderRepeatIntervalMinutes).toBe(10);
+    });
+
+    it("should validate repeat interval range", async () => {
+      let response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          repeatRemindersEnabled: true,
+          reminderRepeatIntervalMinutes: 2,
+        },
+      });
+      expect(response.statusCode).toBe(400);
+
+      response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          repeatRemindersEnabled: true,
+          reminderRepeatIntervalMinutes: 500,
+        },
+      });
+      expect(response.statusCode).toBe(400);
+    });
+
+    it("should validate max nagging reminders range", async () => {
+      let response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          maxNaggingReminders: 0,
+        },
+      });
+      expect(response.statusCode).toBe(400);
+
+      response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          maxNaggingReminders: 25,
+        },
+      });
+      expect(response.statusCode).toBe(400);
+
+      // Valid values should work
+      response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          maxNaggingReminders: 10,
+        },
+      });
+      expect(response.statusCode).toBe(200);
+
+      const getResponse = await ctx.app.inject({
+        method: "GET",
+        url: "/settings",
+      });
+
+      const settings = getResponse.json();
+      expect(settings.maxNaggingReminders).toBe(10);
+    });
+  });
+
+  describe("Skip Reminders for Taken Doses", () => {
+    it("should enable and disable skip reminders setting", async () => {
+      let response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          skipRemindersForTakenDoses: true,
+        },
+      });
+      expect(response.statusCode).toBe(200);
+
+      response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          skipRemindersForTakenDoses: false,
+        },
+      });
+      expect(response.statusCode).toBe(200);
+    });
+
+    it("should work with repeat reminders enabled", async () => {
+      const response = await ctx.app.inject({
+        method: "PUT",
+        url: "/settings",
+        payload: {
+          repeatRemindersEnabled: true,
+          reminderRepeatIntervalMinutes: 5,
+          skipRemindersForTakenDoses: true,
+        },
+      });
+      expect(response.statusCode).toBe(200);
+
+      const getResponse = await ctx.app.inject({
+        method: "GET",
+        url: "/settings",
+      });
+
+      const settings = getResponse.json();
+      expect(settings.repeatRemindersEnabled).toBe(true);
+      expect(settings.reminderRepeatIntervalMinutes).toBe(5);
+      expect(settings.skipRemindersForTakenDoses).toBe(true);
+    });
+  });
+});

backend/src/test/setup.ts

@@ -0,0 +1,299 @@
+/**
+ * Test setup and utilities for MedAssist backend API tests.
+ * Uses in-memory SQLite for isolation between test files.
+ */
+import Fastify, { FastifyInstance } from "fastify";
+import cookie from "@fastify/cookie";
+import jwt from "@fastify/jwt";
+import sensible from "@fastify/sensible";
+import fastifyMultipart from "@fastify/multipart";
+import { createClient, Client } from "@libsql/client";
+import { drizzle } from "drizzle-orm/libsql";
+import { beforeAll, afterAll, beforeEach } from "vitest";
+import { getTableCreationSQL } from "../db/schema-sql.js";
+
+// Type for our test database
+export type TestDb = ReturnType<typeof drizzle>;
+
+// =============================================================================
+// Test App Builder
+// =============================================================================
+export interface TestContext {
+  app: FastifyInstance;
+  db: TestDb;
+  client: Client;
+}
+
+/**
+ * Build a test Fastify app with in-memory SQLite.
+ * Each test file gets its own isolated database.
+ */
+export async function buildTestApp(): Promise<TestContext> {
+  // Create in-memory SQLite database
+  const client = createClient({ url: ":memory:" });
+  const db = drizzle(client);
+
+  // Run schema creation
+  await runTestMigrations(client);
+
+  // Create Fastify app with minimal plugins
+  const app = Fastify({ logger: false });
+
+  await app.register(sensible);
+  await app.register(cookie, { secret: "test-cookie-secret" });
+  await app.register(jwt, {
+    secret: "test-jwt-secret",
+    cookie: { cookieName: "access_token", signed: false },
+  });
+  await app.register(fastifyMultipart, { limits: { fileSize: 10 * 1024 * 1024 } });
+
+  // Decorate config (matches index.ts structure)
+  app.decorate("config", {
+    accessSecret: "test-jwt-secret",
+    refreshSecret: "test-refresh-secret",
+    accessTtl: 15,
+    refreshTtl: 7,
+    cookieOptions: { httpOnly: true, sameSite: "lax", secure: false, path: "/" },
+    refreshCookieOptions: { httpOnly: true, sameSite: "lax", secure: false, path: "/" },
+  });
+
+  return { app, db, client };
+}
+
+/**
+ * Create test database schema
+ */
+async function runTestMigrations(client: Client): Promise<void> {
+  const tableCreations = getTableCreationSQL();
+
+  for (const sql of tableCreations) {
+    await client.execute(sql);
+  }
+}
+
+// =============================================================================
+// Factory Helpers
+// =============================================================================
+
+export interface CreateUserOptions {
+  username?: string;
+  authProvider?: string;
+}
+
+/**
+ * Create a test user and return the ID
+ */
+export async function createTestUser(
+  client: Client,
+  options: CreateUserOptions = {}
+): Promise<number> {
+  const { username = `user_${Date.now()}`, authProvider = "local" } = options;
+
+  const result = await client.execute({
+    sql: `INSERT INTO users (username, auth_provider) VALUES (?, ?) RETURNING id`,
+    args: [username, authProvider],
+  });
+
+  return result.rows[0].id as number;
+}
+
+export interface CreateMedicationOptions {
+  userId: number;
+  name?: string;
+  genericName?: string;
+  takenBy?: string[];
+  packCount?: number;
+  blistersPerPack?: number;
+  pillsPerBlister?: number;
+  looseTablets?: number;
+  pillWeightMg?: number;
+  expiryDate?: string | null;
+  notes?: string | null;
+  intakeRemindersEnabled?: boolean;
+  /** Array of { usage, every, start } for each blister schedule */
+  blisters?: Array<{ usage: number; every: number; start: string }>;
+}
+
+/**
+ * Create a test medication and return the ID
+ */
+export async function createTestMedication(
+  client: Client,
+  options: CreateMedicationOptions
+): Promise<number> {
+  const {
+    userId,
+    name = "Test Medication",
+    genericName = null,
+    takenBy = [],
+    packCount = 1,
+    blistersPerPack = 1,
+    pillsPerBlister = 10,
+    looseTablets = 0,
+    pillWeightMg = null,
+    expiryDate = null,
+    notes = null,
+    intakeRemindersEnabled = false,
+    blisters = [{ usage: 1, every: 1, start: new Date().toISOString() }],
+  } = options;
+
+  // Extract arrays from blisters
+  const usageJson = JSON.stringify(blisters.map((b) => b.usage));
+  const everyJson = JSON.stringify(blisters.map((b) => b.every));
+  const startJson = JSON.stringify(blisters.map((b) => b.start));
+  const takenByJson = JSON.stringify(takenBy);
+
+  const result = await client.execute({
+    sql: `INSERT INTO medications (
+      user_id, name, generic_name, taken_by_json,
+      pack_count, blisters_per_pack, pills_per_blister, loose_tablets,
+      pill_weight_mg, usage_json, every_json, start_json, expiry_date, notes, intake_reminders_enabled
+    ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) RETURNING id`,
+    args: [
+      userId,
+      name,
+      genericName,
+      takenByJson,
+      packCount,
+      blistersPerPack,
+      pillsPerBlister,
+      looseTablets,
+      pillWeightMg,
+      usageJson,
+      everyJson,
+      startJson,
+      expiryDate,
+      notes,
+      intakeRemindersEnabled ? 1 : 0,
+    ],
+  });
+
+  return result.rows[0].id as number;
+}
+
+export interface CreateShareTokenOptions {
+  userId: number;
+  takenBy: string;
+  token?: string;
+  scheduleDays?: number;
+  expiresAt?: number | null;
+}
+
+/**
+ * Create a test share token and return the token string
+ */
+export async function createTestShareToken(
+  client: Client,
+  options: CreateShareTokenOptions
+): Promise<string> {
+  const {
+    userId,
+    takenBy,
+    token = `test_token_${Date.now()}`,
+    scheduleDays = 30,
+    expiresAt = null,
+  } = options;
+
+  await client.execute({
+    sql: `INSERT INTO share_tokens (user_id, token, taken_by, schedule_days, expires_at)
+          VALUES (?, ?, ?, ?, ?)`,
+    args: [userId, token, takenBy, scheduleDays, expiresAt],
+  });
+
+  return token;
+}
+
+export interface CreateDoseTrackingOptions {
+  userId: number;
+  doseId: string;
+  markedBy?: string | null;
+  takenAt?: number;
+}
+
+/**
+ * Create a dose tracking record
+ */
+export async function createTestDoseTracking(
+  client: Client,
+  options: CreateDoseTrackingOptions
+): Promise<void> {
+  const {
+    userId,
+    doseId,
+    markedBy = null,
+    takenAt = Math.floor(Date.now() / 1000),
+  } = options;
+
+  await client.execute({
+    sql: `INSERT INTO dose_tracking (user_id, dose_id, marked_by, taken_at)
+          VALUES (?, ?, ?, ?)`,
+    args: [userId, doseId, markedBy, takenAt],
+  });
+}
+
+export interface UpdateUserSettingsOptions {
+  userId: number;
+  stockCalculationMode?: "automatic" | "manual";
+  lowStockDays?: number;
+}
+
+/**
+ * Create or update user settings
+ */
+export async function setUserSettings(
+  client: Client,
+  options: UpdateUserSettingsOptions
+): Promise<void> {
+  const { userId, stockCalculationMode = "automatic", lowStockDays = 30 } = options;
+
+  // Check if settings exist
+  const existing = await client.execute({
+    sql: `SELECT id FROM user_settings WHERE user_id = ?`,
+    args: [userId],
+  });
+
+  if (existing.rows.length > 0) {
+    await client.execute({
+      sql: `UPDATE user_settings SET stock_calculation_mode = ?, low_stock_days = ? WHERE user_id = ?`,
+      args: [stockCalculationMode, lowStockDays, userId],
+    });
+  } else {
+    await client.execute({
+      sql: `INSERT INTO user_settings (user_id, stock_calculation_mode, low_stock_days) VALUES (?, ?, ?)`,
+      args: [userId, stockCalculationMode, lowStockDays],
+    });
+  }
+}
+
+// =============================================================================
+// Test Cleanup
+// =============================================================================
+
+/**
+ * Close test app and database connections
+ */
+export async function closeTestApp(ctx: TestContext): Promise<void> {
+  await ctx.app.close();
+  ctx.client.close();
+}
+
+/**
+ * Clear all data from test database (between tests)
+ */
+export async function clearTestData(client: Client): Promise<void> {
+  // Order matters due to foreign keys
+  await client.execute("DELETE FROM dose_tracking");
+  await client.execute("DELETE FROM share_tokens");
+  await client.execute("DELETE FROM refresh_tokens");
+  await client.execute("DELETE FROM user_settings");
+  await client.execute("DELETE FROM medications");
+  await client.execute("DELETE FROM users");
+}
+
+// =============================================================================
+// Vitest Global Setup
+// =============================================================================
+
+// Set test environment
+process.env.AUTH_ENABLED = "false";
+process.env.NODE_ENV = "test";

backend/src/test/share.test.ts

@@ -0,0 +1,647 @@
+/**
+ * Tests for share link API endpoints.
+ * Tests creating share tokens, accessing shared schedules, and marking doses via share links.
+ */
+import { describe, it, expect, beforeAll, afterAll, beforeEach } from "vitest";
+import {
+  buildTestApp,
+  closeTestApp,
+  clearTestData,
+  createTestUser,
+  createTestMedication,
+  createTestShareToken,
+  TestContext,
+} from "./setup.js";
+
+// =============================================================================
+// Route Registration
+// =============================================================================
+
+async function registerShareRoutes(ctx: TestContext) {
+  const { app, client } = ctx;
+
+  // POST /share - Create a share token
+  app.post<{ Body: { takenBy: string; scheduleDays?: number } }>("/share", async (request, reply) => {
+    const userId = 1;
+    const { takenBy, scheduleDays = 30 } = request.body || {};
+
+    if (!takenBy || typeof takenBy !== "string" || takenBy.length === 0) {
+      return reply.status(400).send({ error: "takenBy is required", code: "VALIDATION_ERROR" });
+    }
+
+    if (scheduleDays < 1 || scheduleDays > 365) {
+      return reply.status(400).send({ error: "scheduleDays must be 1-365", code: "VALIDATION_ERROR" });
+    }
+
+    // Check if user has medications for this person
+    const meds = await client.execute({
+      sql: `SELECT id, taken_by_json FROM medications WHERE user_id = ?`,
+      args: [userId],
+    });
+
+    const hasMatchingMed = meds.rows.some((m) => {
+      const takenByList: string[] = JSON.parse(m.taken_by_json as string || "[]");
+      return takenByList.includes(takenBy);
+    });
+
+    if (!hasMatchingMed) {
+      return reply.status(400).send({ error: "No medications found for this person", code: "NO_MEDICATIONS" });
+    }
+
+    // Generate token
+    const token = `share_${Date.now()}_${Math.random().toString(36).substring(2, 10)}`;
+    const expiresAt = Math.floor(Date.now() / 1000) + 30 * 24 * 60 * 60; // 30 days
+
+    await client.execute({
+      sql: `INSERT INTO share_tokens (user_id, token, taken_by, schedule_days, expires_at)
+            VALUES (?, ?, ?, ?, ?)`,
+      args: [userId, token, takenBy, scheduleDays, expiresAt],
+    });
+
+    return {
+      token,
+      shareUrl: `/share/${token}`,
+      expiresAt: new Date(expiresAt * 1000).toISOString(),
+    };
+  });
+
+  // GET /share/:token - Get shared schedule data
+  app.get<{ Params: { token: string } }>("/share/:token", async (request, reply) => {
+    const { token } = request.params;
+
+    const shareResult = await client.execute({
+      sql: `SELECT st.*, u.username as owner_username 
+            FROM share_tokens st 
+            JOIN users u ON st.user_id = u.id 
+            WHERE st.token = ?`,
+      args: [token],
+    });
+
+    if (shareResult.rows.length === 0) {
+      return reply.status(404).send({ error: "Share link not found", code: "NOT_FOUND" });
+    }
+
+    const share = shareResult.rows[0];
+    const now = Math.floor(Date.now() / 1000);
+
+    // Check expiry
+    if (share.expires_at && (share.expires_at as number) < now) {
+      return reply.status(410).send({
+        error: "Share link has expired",
+        code: "EXPIRED",
+        ownerUsername: share.owner_username,
+        takenBy: share.taken_by,
+        expiredAt: new Date((share.expires_at as number) * 1000).toISOString(),
+      });
+    }
+
+    // Get medications for this person
+    const medsResult = await client.execute({
+      sql: `SELECT * FROM medications WHERE user_id = ?`,
+      args: [share.user_id],
+    });
+
+    const medications = medsResult.rows
+      .filter((m) => {
+        const takenByList: string[] = JSON.parse(m.taken_by_json as string || "[]");
+        return takenByList.includes(share.taken_by as string);
+      })
+      .map((m) => {
+        const usageArr: number[] = JSON.parse(m.usage_json as string || "[]");
+        const everyArr: number[] = JSON.parse(m.every_json as string || "[]");
+        const startArr: string[] = JSON.parse(m.start_json as string || "[]");
+
+        return {
+          id: m.id,
+          name: m.name,
+          genericName: m.generic_name,
+          pillWeightMg: m.pill_weight_mg,
+          imageUrl: m.image_url,
+          totalPills:
+            (m.pack_count as number) *
+              (m.blisters_per_pack as number) *
+              (m.pills_per_blister as number) +
+            (m.loose_tablets as number),
+          packCount: m.pack_count,
+          blistersPerPack: m.blisters_per_pack,
+          looseTablets: m.loose_tablets,
+          pillsPerBlister: m.pills_per_blister,
+          takenBy: JSON.parse(m.taken_by_json as string || "[]"),
+          blisters: usageArr.map((usage, i) => ({
+            usage,
+            every: everyArr[i] || 1,
+            start: startArr[i] || new Date().toISOString(),
+          })),
+        };
+      });
+
+    // Get settings
+    const settingsResult = await client.execute({
+      sql: `SELECT low_stock_days FROM user_settings WHERE user_id = ?`,
+      args: [share.user_id],
+    });
+
+    const lowStockDays = settingsResult.rows.length > 0 ? (settingsResult.rows[0].low_stock_days as number) : 30;
+
+    return {
+      takenBy: share.taken_by,
+      sharedBy: share.owner_username,
+      scheduleDays: share.schedule_days,
+      medications,
+      stockThresholds: {
+        lowStockDays,
+      },
+    };
+  });
+
+  // GET /share/:token/doses - Get taken doses for share link
+  app.get<{ Params: { token: string } }>("/share/:token/doses", async (request, reply) => {
+    const { token } = request.params;
+
+    const shareResult = await client.execute({
+      sql: `SELECT user_id FROM share_tokens WHERE token = ?`,
+      args: [token],
+    });
+
+    if (shareResult.rows.length === 0) {
+      return reply.status(404).send({ error: "Share link not found" });
+    }
+
+    const userId = shareResult.rows[0].user_id;
+
+    const dosesResult = await client.execute({
+      sql: `SELECT dose_id, taken_at, marked_by FROM dose_tracking WHERE user_id = ?`,
+      args: [userId],
+    });
+
+    return {
+      doses: dosesResult.rows.map((d) => ({
+        doseId: d.dose_id,
+        takenAt: (d.taken_at as number) * 1000,
+        markedBy: d.marked_by,
+      })),
+    };
+  });
+
+  // POST /share/:token/doses - Mark dose via share link
+  app.post<{ Params: { token: string }; Body: { doseId: string } }>(
+    "/share/:token/doses",
+    async (request, reply) => {
+      const { token } = request.params;
+      const { doseId } = request.body || {};
+
+      if (!doseId) {
+        return reply.status(400).send({ error: "doseId is required" });
+      }
+
+      const shareResult = await client.execute({
+        sql: `SELECT user_id, taken_by FROM share_tokens WHERE token = ?`,
+        args: [token],
+      });
+
+      if (shareResult.rows.length === 0) {
+        return reply.status(404).send({ error: "Share link not found" });
+      }
+
+      const { user_id: userId, taken_by: takenBy } = shareResult.rows[0];
+
+      // Check if already marked
+      const existing = await client.execute({
+        sql: `SELECT id FROM dose_tracking WHERE user_id = ? AND dose_id = ?`,
+        args: [userId, doseId],
+      });
+
+      if (existing.rows.length > 0) {
+        return { success: true, message: "Already marked" };
+      }
+
+      // Insert with markedBy = takenBy from share token
+      await client.execute({
+        sql: `INSERT INTO dose_tracking (user_id, dose_id, marked_by) VALUES (?, ?, ?)`,
+        args: [userId, doseId, takenBy],
+      });
+
+      return { success: true };
+    }
+  );
+
+  // DELETE /share/:token/doses/:doseId - Unmark dose via share link
+  app.delete<{ Params: { token: string; doseId: string } }>(
+    "/share/:token/doses/:doseId",
+    async (request, reply) => {
+      const { token, doseId } = request.params;
+
+      const shareResult = await client.execute({
+        sql: `SELECT user_id FROM share_tokens WHERE token = ?`,
+        args: [token],
+      });
+
+      if (shareResult.rows.length === 0) {
+        return reply.status(404).send({ error: "Share link not found" });
+      }
+
+      const userId = shareResult.rows[0].user_id;
+
+      await client.execute({
+        sql: `DELETE FROM dose_tracking WHERE user_id = ? AND dose_id = ?`,
+        args: [userId, doseId],
+      });
+
+      return { success: true };
+    }
+  );
+
+  // GET /share/people - Get unique takenBy values
+  app.get("/share/people", async (request, reply) => {
+    const userId = 1;
+
+    const result = await client.execute({
+      sql: `SELECT taken_by_json FROM medications WHERE user_id = ?`,
+      args: [userId],
+    });
+
+    const peopleSet = new Set<string>();
+    for (const row of result.rows) {
+      const takenByList: string[] = JSON.parse(row.taken_by_json as string || "[]");
+      takenByList.forEach((p) => peopleSet.add(p));
+    }
+
+    return { people: Array.from(peopleSet).sort() };
+  });
+}
+
+// =============================================================================
+// Tests
+// =============================================================================
+
+describe("Share Link API", () => {
+  let ctx: TestContext;
+  let userId: number;
+
+  beforeAll(async () => {
+    ctx = await buildTestApp();
+    await registerShareRoutes(ctx);
+    await ctx.app.ready();
+  });
+
+  afterAll(async () => {
+    await closeTestApp(ctx);
+  });
+
+  beforeEach(async () => {
+    await clearTestData(ctx.client);
+    // Reset SQLite autoincrement so user gets ID 1
+    await ctx.client.execute("DELETE FROM sqlite_sequence WHERE name='users'");
+    userId = await createTestUser(ctx.client, { username: "testuser" });
+  });
+
+  // ---------------------------------------------------------------------------
+  // POST /share - Create share token
+  // ---------------------------------------------------------------------------
+
+  describe("POST /share", () => {
+    it("should create a share token for a person", async () => {
+      // Create medication with takenBy
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Aspirin",
+        takenBy: ["Daniel"],
+      });
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/share",
+        payload: { takenBy: "Daniel", scheduleDays: 30 },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.token).toBeDefined();
+      expect(data.token.length).toBeGreaterThan(10);
+      expect(data.shareUrl).toBe(`/share/${data.token}`);
+      expect(data.expiresAt).toBeDefined();
+    });
+
+    it("should reject when no medications for person", async () => {
+      // Create medication with different takenBy
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Aspirin",
+        takenBy: ["Max"],
+      });
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/share",
+        payload: { takenBy: "Daniel", scheduleDays: 30 },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json()).toEqual({
+        error: "No medications found for this person",
+        code: "NO_MEDICATIONS",
+      });
+    });
+
+    it("should reject request without takenBy", async () => {
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/share",
+        payload: { scheduleDays: 30 },
+      });
+
+      expect(response.statusCode).toBe(400);
+      expect(response.json()).toEqual({
+        error: "takenBy is required",
+        code: "VALIDATION_ERROR",
+      });
+    });
+
+    it("should use custom scheduleDays", async () => {
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Aspirin",
+        takenBy: ["Daniel"],
+      });
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/share",
+        payload: { takenBy: "Daniel", scheduleDays: 90 },
+      });
+
+      expect(response.statusCode).toBe(200);
+
+      // Verify in DB
+      const token = response.json().token;
+      const result = await ctx.client.execute({
+        sql: `SELECT schedule_days FROM share_tokens WHERE token = ?`,
+        args: [token],
+      });
+      expect(result.rows[0].schedule_days).toBe(90);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // GET /share/:token - Access shared schedule
+  // ---------------------------------------------------------------------------
+
+  describe("GET /share/:token", () => {
+    it("should return shared schedule data", async () => {
+      // Create medication
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Aspirin",
+        genericName: "Acetylsalicylic acid",
+        takenBy: ["Daniel"],
+        packCount: 2,
+        blistersPerPack: 3,
+        pillsPerBlister: 10,
+        looseTablets: 5,
+        blisters: [{ usage: 1, every: 1, start: "2025-01-01T08:00:00.000Z" }],
+      });
+
+      // Create share token
+      const token = await createTestShareToken(ctx.client, {
+        userId,
+        takenBy: "Daniel",
+        scheduleDays: 30,
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: `/share/${token}`,
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+
+      expect(data.takenBy).toBe("Daniel");
+      expect(data.sharedBy).toBe("testuser");
+      expect(data.scheduleDays).toBe(30);
+      expect(data.medications).toHaveLength(1);
+
+      const med = data.medications[0];
+      expect(med.name).toBe("Aspirin");
+      expect(med.genericName).toBe("Acetylsalicylic acid");
+      expect(med.totalPills).toBe(2 * 3 * 10 + 5); // 65
+      expect(med.takenBy).toEqual(["Daniel"]);
+      expect(med.blisters).toHaveLength(1);
+      expect(med.blisters[0].usage).toBe(1);
+      expect(med.blisters[0].every).toBe(1);
+    });
+
+    it("should return 404 for invalid token", async () => {
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/share/invalid_token_123",
+      });
+
+      expect(response.statusCode).toBe(404);
+      expect(response.json()).toEqual({
+        error: "Share link not found",
+        code: "NOT_FOUND",
+      });
+    });
+
+    it("should return 410 for expired token", async () => {
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Aspirin",
+        takenBy: ["Daniel"],
+      });
+
+      // Create expired token (expired 1 day ago)
+      const expiredAt = Math.floor(Date.now() / 1000) - 86400;
+      const token = await createTestShareToken(ctx.client, {
+        userId,
+        takenBy: "Daniel",
+        expiresAt: expiredAt,
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: `/share/${token}`,
+      });
+
+      expect(response.statusCode).toBe(410);
+      const data = response.json();
+      expect(data.code).toBe("EXPIRED");
+      expect(data.ownerUsername).toBe("testuser");
+      expect(data.takenBy).toBe("Daniel");
+    });
+
+    it("should filter medications to only those for takenBy person", async () => {
+      // Create two medications - one for Daniel, one for Max
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Aspirin",
+        takenBy: ["Daniel"],
+      });
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Ibuprofen",
+        takenBy: ["Max"],
+      });
+
+      const token = await createTestShareToken(ctx.client, {
+        userId,
+        takenBy: "Daniel",
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: `/share/${token}`,
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.medications).toHaveLength(1);
+      expect(data.medications[0].name).toBe("Aspirin");
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Share Token Dose Tracking
+  // ---------------------------------------------------------------------------
+
+  describe("Share link dose tracking", () => {
+    it("POST /share/:token/doses should mark dose with markedBy", async () => {
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Aspirin",
+        takenBy: ["Daniel"],
+      });
+
+      const token = await createTestShareToken(ctx.client, {
+        userId,
+        takenBy: "Daniel",
+      });
+
+      const doseId = "1-0-1735344000000";
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: `/share/${token}/doses`,
+        payload: { doseId },
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true });
+
+      // Verify markedBy is set to takenBy from share token
+      const result = await ctx.client.execute({
+        sql: `SELECT marked_by FROM dose_tracking WHERE dose_id = ?`,
+        args: [doseId],
+      });
+      expect(result.rows[0].marked_by).toBe("Daniel");
+    });
+
+    it("GET /share/:token/doses should return all doses for owner", async () => {
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Aspirin",
+        takenBy: ["Daniel"],
+      });
+
+      const token = await createTestShareToken(ctx.client, {
+        userId,
+        takenBy: "Daniel",
+      });
+
+      // Create some dose tracking records
+      await ctx.client.execute({
+        sql: `INSERT INTO dose_tracking (user_id, dose_id, marked_by) VALUES (?, ?, ?)`,
+        args: [userId, "1-0-1735344000000", null],
+      });
+      await ctx.client.execute({
+        sql: `INSERT INTO dose_tracking (user_id, dose_id, marked_by) VALUES (?, ?, ?)`,
+        args: [userId, "1-0-1735430400000", "Daniel"],
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: `/share/${token}/doses`,
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.doses).toHaveLength(2);
+    });
+
+    it("DELETE /share/:token/doses/:doseId should unmark dose", async () => {
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Aspirin",
+        takenBy: ["Daniel"],
+      });
+
+      const token = await createTestShareToken(ctx.client, {
+        userId,
+        takenBy: "Daniel",
+      });
+
+      const doseId = "1-0-1735344000000";
+
+      // Mark dose first
+      await ctx.app.inject({
+        method: "POST",
+        url: `/share/${token}/doses`,
+        payload: { doseId },
+      });
+
+      // Unmark
+      const response = await ctx.app.inject({
+        method: "DELETE",
+        url: `/share/${token}/doses/${encodeURIComponent(doseId)}`,
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ success: true });
+
+      // Verify deleted
+      const result = await ctx.client.execute({
+        sql: `SELECT COUNT(*) as count FROM dose_tracking WHERE dose_id = ?`,
+        args: [doseId],
+      });
+      expect(result.rows[0].count).toBe(0);
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // GET /share/people
+  // ---------------------------------------------------------------------------
+
+  describe("GET /share/people", () => {
+    it("should return unique takenBy values from all medications", async () => {
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Med 1",
+        takenBy: ["Daniel", "Max"],
+      });
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Med 2",
+        takenBy: ["Daniel", "Lisa"],
+      });
+
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/share/people",
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data.people).toEqual(["Daniel", "Lisa", "Max"]); // sorted
+    });
+
+    it("should return empty array when no medications", async () => {
+      const response = await ctx.app.inject({
+        method: "GET",
+        url: "/share/people",
+      });
+
+      expect(response.statusCode).toBe(200);
+      expect(response.json()).toEqual({ people: [] });
+    });
+  });
+});

backend/src/test/stock-calculation.test.ts

@@ -0,0 +1,635 @@
+/**
+ * Tests for stock calculation modes (automatic vs manual).
+ * Tests the /medications/usage endpoint with different settings.
+ */
+import { describe, it, expect, beforeAll, afterAll, beforeEach } from "vitest";
+import {
+  buildTestApp,
+  closeTestApp,
+  clearTestData,
+  createTestUser,
+  createTestMedication,
+  createTestDoseTracking,
+  setUserSettings,
+  TestContext,
+} from "./setup.js";
+
+// =============================================================================
+// Route Registration
+// =============================================================================
+
+async function registerUsageRoutes(ctx: TestContext) {
+  const { app, client } = ctx;
+
+  // POST /medications/usage - Calculate medication usage for a date range
+  app.post<{ Body: { startDate: string; endDate: string } }>(
+    "/medications/usage",
+    async (request, reply) => {
+      const userId = 1;
+      const { startDate, endDate } = request.body || {};
+
+      if (!startDate || !endDate) {
+        return reply.status(400).send({ error: "startDate and endDate are required" });
+      }
+
+      const start = new Date(startDate);
+      const end = new Date(endDate);
+
+      // Get user settings
+      const settingsResult = await client.execute({
+        sql: `SELECT stock_calculation_mode FROM user_settings WHERE user_id = ?`,
+        args: [userId],
+      });
+      const stockMode =
+        settingsResult.rows.length > 0
+          ? (settingsResult.rows[0].stock_calculation_mode as string)
+          : "automatic";
+
+      // Get all medications
+      const medsResult = await client.execute({
+        sql: `SELECT * FROM medications WHERE user_id = ?`,
+        args: [userId],
+      });
+
+      const results = [];
+
+      for (const med of medsResult.rows) {
+        const totalPills =
+          (med.pack_count as number) *
+            (med.blisters_per_pack as number) *
+            (med.pills_per_blister as number) +
+          (med.loose_tablets as number);
+
+        const blisterSize = med.pills_per_blister as number;
+
+        // Calculate usage based on schedule
+        const usageArr: number[] = JSON.parse((med.usage_json as string) || "[]");
+        const everyArr: number[] = JSON.parse((med.every_json as string) || "[]");
+        const startArr: string[] = JSON.parse((med.start_json as string) || "[]");
+
+        let plannerUsage = 0;
+
+        if (stockMode === "automatic") {
+          // Automatic: Calculate from schedule
+          for (let i = 0; i < usageArr.length; i++) {
+            const usage = usageArr[i] || 0;
+            const every = everyArr[i] || 1;
+            const scheduleStart = new Date(startArr[i] || start);
+
+            // Count doses from scheduleStart to end within the range
+            let current = new Date(scheduleStart);
+            while (current <= end) {
+              if (current >= start) {
+                plannerUsage += usage;
+              }
+              current.setDate(current.getDate() + every);
+            }
+          }
+        } else {
+          // Manual: Count only tracked doses in the date range
+          const dosesResult = await client.execute({
+            sql: `SELECT dose_id FROM dose_tracking 
+                  WHERE user_id = ? 
+                  AND taken_at >= ? 
+                  AND taken_at <= ?`,
+            args: [
+              userId,
+              Math.floor(start.getTime() / 1000),
+              Math.floor(end.getTime() / 1000),
+            ],
+          });
+
+          // Filter to doses for this medication
+          const medIdStr = `${med.id}-`;
+          for (const dose of dosesResult.rows) {
+            const doseId = dose.dose_id as string;
+            if (doseId.startsWith(medIdStr)) {
+              // Parse usage from the schedule based on blister index
+              const parts = doseId.split("-");
+              if (parts.length >= 3) {
+                const blisterIdx = parseInt(parts[1], 10);
+                plannerUsage += usageArr[blisterIdx] || 1;
+              }
+            }
+          }
+        }
+
+        // Calculate how many blisters/pills needed
+        const blistersNeeded = Math.ceil(plannerUsage / blisterSize);
+        const fullBlisters = Math.floor(plannerUsage / blisterSize);
+        const loosePills = plannerUsage % blisterSize;
+
+        results.push({
+          medicationId: med.id,
+          medicationName: med.name,
+          totalPills,
+          plannerUsage,
+          blisterSize,
+          blistersNeeded,
+          fullBlisters,
+          loosePills,
+          enough: totalPills >= plannerUsage,
+        });
+      }
+
+      return results;
+    }
+  );
+
+  // GET /medications - List medications (for checking stock)
+  app.get("/medications", async (request, reply) => {
+    const userId = 1;
+
+    const result = await client.execute({
+      sql: `SELECT * FROM medications WHERE user_id = ?`,
+      args: [userId],
+    });
+
+    return result.rows.map((m) => ({
+      id: m.id,
+      name: m.name,
+      packCount: m.pack_count,
+      blistersPerPack: m.blisters_per_pack,
+      pillsPerBlister: m.pills_per_blister,
+      looseTablets: m.loose_tablets,
+      totalPills:
+        (m.pack_count as number) *
+          (m.blisters_per_pack as number) *
+          (m.pills_per_blister as number) +
+        (m.loose_tablets as number),
+    }));
+  });
+}
+
+// =============================================================================
+// Tests
+// =============================================================================
+
+describe("Stock Calculation API", () => {
+  let ctx: TestContext;
+  let userId: number;
+
+  beforeAll(async () => {
+    ctx = await buildTestApp();
+    await registerUsageRoutes(ctx);
+    await ctx.app.ready();
+  });
+
+  afterAll(async () => {
+    await closeTestApp(ctx);
+  });
+
+  beforeEach(async () => {
+    await clearTestData(ctx.client);
+    // Reset SQLite autoincrement so user gets ID 1
+    await ctx.client.execute("DELETE FROM sqlite_sequence WHERE name='users'");
+    userId = await createTestUser(ctx.client, { username: "testuser" });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Automatic Mode Tests
+  // ---------------------------------------------------------------------------
+
+  describe("Automatic mode", () => {
+    beforeEach(async () => {
+      await setUserSettings(ctx.client, {
+        userId,
+        stockCalculationMode: "automatic",
+      });
+    });
+
+    it("should calculate usage from schedule", async () => {
+      // Medication: 1 pill daily starting Jan 1
+      const start = new Date("2025-01-01T00:00:00.000Z");
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Aspirin",
+        packCount: 1,
+        blistersPerPack: 1,
+        pillsPerBlister: 30,
+        blisters: [{ usage: 1, every: 1, start: start.toISOString() }],
+      });
+
+      // Calculate usage for 10 days (Jan 1-10)
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-10T23:59:59.999Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data).toHaveLength(1);
+
+      const med = data[0];
+      expect(med.medicationName).toBe("Aspirin");
+      expect(med.totalPills).toBe(30);
+      expect(med.plannerUsage).toBe(10); // 10 days, 1 pill/day
+      expect(med.enough).toBe(true);
+    });
+
+    it("should handle every-other-day schedules", async () => {
+      const start = new Date("2025-01-01T00:00:00.000Z");
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Med B",
+        packCount: 1,
+        blistersPerPack: 1,
+        pillsPerBlister: 20,
+        blisters: [{ usage: 2, every: 2, start: start.toISOString() }], // 2 pills every 2 days
+      });
+
+      // 10 days: Jan 1, 3, 5, 7, 9 = 5 doses × 2 pills = 10 pills
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-10T23:59:59.999Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data[0].plannerUsage).toBe(10);
+    });
+
+    it("should handle multiple blisters (schedules)", async () => {
+      const start = new Date("2025-01-01T00:00:00.000Z");
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Multi Schedule",
+        packCount: 1,
+        blistersPerPack: 1,
+        pillsPerBlister: 50,
+        blisters: [
+          { usage: 1, every: 1, start: start.toISOString() }, // Morning: 1/day
+          { usage: 1, every: 1, start: start.toISOString() }, // Evening: 1/day
+        ],
+      });
+
+      // 10 days: 2 schedules × 10 days × 1 pill = 20 pills
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-10T23:59:59.999Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data[0].plannerUsage).toBe(20);
+    });
+
+    it("should return enough=false when stock insufficient", async () => {
+      const start = new Date("2025-01-01T00:00:00.000Z");
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Low Stock Med",
+        packCount: 1,
+        blistersPerPack: 1,
+        pillsPerBlister: 5, // Only 5 pills
+        blisters: [{ usage: 1, every: 1, start: start.toISOString() }],
+      });
+
+      // Need 10 pills but only have 5
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-10T23:59:59.999Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data[0].totalPills).toBe(5);
+      expect(data[0].plannerUsage).toBe(10);
+      expect(data[0].enough).toBe(false);
+    });
+
+    it("should calculate blister counts correctly", async () => {
+      const start = new Date("2025-01-01T00:00:00.000Z");
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Blister Test",
+        packCount: 2,
+        blistersPerPack: 2,
+        pillsPerBlister: 10, // 4 blisters × 10 = 40 pills
+        blisters: [{ usage: 1, every: 1, start: start.toISOString() }],
+      });
+
+      // 25 days = 25 pills needed = 2 full blisters + 5 loose
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-25T23:59:59.999Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data[0].plannerUsage).toBe(25);
+      expect(data[0].blisterSize).toBe(10);
+      expect(data[0].blistersNeeded).toBe(3); // ceil(25/10)
+      expect(data[0].fullBlisters).toBe(2); // floor(25/10)
+      expect(data[0].loosePills).toBe(5); // 25 % 10
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Manual Mode Tests
+  // ---------------------------------------------------------------------------
+
+  describe("Manual mode", () => {
+    beforeEach(async () => {
+      await setUserSettings(ctx.client, {
+        userId,
+        stockCalculationMode: "manual",
+      });
+    });
+
+    it("should count only tracked doses", async () => {
+      const start = new Date("2025-01-01T00:00:00.000Z");
+      const medId = await createTestMedication(ctx.client, {
+        userId,
+        name: "Manual Med",
+        packCount: 1,
+        blistersPerPack: 1,
+        pillsPerBlister: 30,
+        blisters: [{ usage: 1, every: 1, start: start.toISOString() }],
+      });
+
+      // In automatic mode this would count 10 doses
+      // In manual mode, only count tracked doses
+      // Track only 3 doses
+      const jan2 = Math.floor(new Date("2025-01-02T08:00:00.000Z").getTime() / 1000);
+      const jan5 = Math.floor(new Date("2025-01-05T08:00:00.000Z").getTime() / 1000);
+      const jan8 = Math.floor(new Date("2025-01-08T08:00:00.000Z").getTime() / 1000);
+
+      await createTestDoseTracking(ctx.client, {
+        userId,
+        doseId: `${medId}-0-${jan2 * 1000}`,
+        takenAt: jan2,
+      });
+      await createTestDoseTracking(ctx.client, {
+        userId,
+        doseId: `${medId}-0-${jan5 * 1000}`,
+        takenAt: jan5,
+      });
+      await createTestDoseTracking(ctx.client, {
+        userId,
+        doseId: `${medId}-0-${jan8 * 1000}`,
+        takenAt: jan8,
+      });
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-10T23:59:59.999Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data[0].plannerUsage).toBe(3); // Only 3 tracked doses
+    });
+
+    it("should return 0 usage when no doses tracked", async () => {
+      const start = new Date("2025-01-01T00:00:00.000Z");
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Untracked Med",
+        packCount: 1,
+        blistersPerPack: 1,
+        pillsPerBlister: 30,
+        blisters: [{ usage: 1, every: 1, start: start.toISOString() }],
+      });
+
+      // No dose tracking records
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-10T23:59:59.999Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data[0].plannerUsage).toBe(0);
+      expect(data[0].enough).toBe(true);
+    });
+
+    it("should only count doses within date range", async () => {
+      const start = new Date("2025-01-01T00:00:00.000Z");
+      const medId = await createTestMedication(ctx.client, {
+        userId,
+        name: "Range Test",
+        packCount: 1,
+        blistersPerPack: 1,
+        pillsPerBlister: 30,
+        blisters: [{ usage: 1, every: 1, start: start.toISOString() }],
+      });
+
+      // Dose before range (Dec 31)
+      const dec31 = Math.floor(new Date("2024-12-31T08:00:00.000Z").getTime() / 1000);
+      await createTestDoseTracking(ctx.client, {
+        userId,
+        doseId: `${medId}-0-${dec31 * 1000}`,
+        takenAt: dec31,
+      });
+
+      // Dose in range (Jan 5)
+      const jan5 = Math.floor(new Date("2025-01-05T08:00:00.000Z").getTime() / 1000);
+      await createTestDoseTracking(ctx.client, {
+        userId,
+        doseId: `${medId}-0-${jan5 * 1000}`,
+        takenAt: jan5,
+      });
+
+      // Dose after range (Jan 15)
+      const jan15 = Math.floor(new Date("2025-01-15T08:00:00.000Z").getTime() / 1000);
+      await createTestDoseTracking(ctx.client, {
+        userId,
+        doseId: `${medId}-0-${jan15 * 1000}`,
+        takenAt: jan15,
+      });
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-10T23:59:59.999Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data[0].plannerUsage).toBe(1); // Only Jan 5 is in range
+    });
+
+    it("should handle multi-pill doses correctly", async () => {
+      const start = new Date("2025-01-01T00:00:00.000Z");
+      const medId = await createTestMedication(ctx.client, {
+        userId,
+        name: "Multi-Pill",
+        packCount: 1,
+        blistersPerPack: 1,
+        pillsPerBlister: 30,
+        blisters: [{ usage: 2, every: 1, start: start.toISOString() }], // 2 pills per dose
+      });
+
+      const jan2 = Math.floor(new Date("2025-01-02T08:00:00.000Z").getTime() / 1000);
+      await createTestDoseTracking(ctx.client, {
+        userId,
+        doseId: `${medId}-0-${jan2 * 1000}`, // Blister index 0 has usage=2
+        takenAt: jan2,
+      });
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-10T23:59:59.999Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data[0].plannerUsage).toBe(2); // 1 dose × 2 pills
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Mode Comparison Tests
+  // ---------------------------------------------------------------------------
+
+  describe("Automatic vs Manual mode comparison", () => {
+    it("should show different results for same medication", async () => {
+      const start = new Date("2025-01-01T00:00:00.000Z");
+      const medId = await createTestMedication(ctx.client, {
+        userId,
+        name: "Comparison Med",
+        packCount: 1,
+        blistersPerPack: 1,
+        pillsPerBlister: 30,
+        blisters: [{ usage: 1, every: 1, start: start.toISOString() }],
+      });
+
+      // Track only 5 of the 10 scheduled doses
+      for (let day = 1; day <= 5; day++) {
+        const date = new Date(`2025-01-0${day}T08:00:00.000Z`);
+        const ts = Math.floor(date.getTime() / 1000);
+        await createTestDoseTracking(ctx.client, {
+          userId,
+          doseId: `${medId}-0-${ts * 1000}`,
+          takenAt: ts,
+        });
+      }
+
+      // Test automatic mode
+      await setUserSettings(ctx.client, {
+        userId,
+        stockCalculationMode: "automatic",
+      });
+
+      const autoResponse = await ctx.app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-10T23:59:59.999Z",
+        },
+      });
+
+      expect(autoResponse.statusCode).toBe(200);
+      const autoData = autoResponse.json();
+      expect(autoData[0].plannerUsage).toBe(10); // Schedule says 10 doses
+
+      // Test manual mode
+      await setUserSettings(ctx.client, {
+        userId,
+        stockCalculationMode: "manual",
+      });
+
+      const manualResponse = await ctx.app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-10T23:59:59.999Z",
+        },
+      });
+
+      expect(manualResponse.statusCode).toBe(200);
+      const manualData = manualResponse.json();
+      expect(manualData[0].plannerUsage).toBe(5); // Only 5 actually tracked
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // Multiple Medications Tests
+  // ---------------------------------------------------------------------------
+
+  describe("Multiple medications", () => {
+    it("should calculate usage for all medications", async () => {
+      const start = new Date("2025-01-01T00:00:00.000Z");
+
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Med A",
+        packCount: 1,
+        blistersPerPack: 1,
+        pillsPerBlister: 20,
+        blisters: [{ usage: 1, every: 1, start: start.toISOString() }],
+      });
+
+      await createTestMedication(ctx.client, {
+        userId,
+        name: "Med B",
+        packCount: 1,
+        blistersPerPack: 1,
+        pillsPerBlister: 20,
+        blisters: [{ usage: 2, every: 2, start: start.toISOString() }],
+      });
+
+      await setUserSettings(ctx.client, {
+        userId,
+        stockCalculationMode: "automatic",
+      });
+
+      const response = await ctx.app.inject({
+        method: "POST",
+        url: "/medications/usage",
+        payload: {
+          startDate: "2025-01-01T00:00:00.000Z",
+          endDate: "2025-01-10T23:59:59.999Z",
+        },
+      });
+
+      expect(response.statusCode).toBe(200);
+      const data = response.json();
+      expect(data).toHaveLength(2);
+
+      const medA = data.find((d: any) => d.medicationName === "Med A");
+      const medB = data.find((d: any) => d.medicationName === "Med B");
+
+      expect(medA.plannerUsage).toBe(10); // 10 days × 1 pill
+      expect(medB.plannerUsage).toBe(10); // 5 doses × 2 pills
+    });
+  });
+});

backend/src/test/translations.test.ts

@@ -0,0 +1,136 @@
+/**
+ * Tests for translations module
+ */
+import { describe, it, expect } from "vitest";
+import { getTranslations, t, getDateLocale, type Language } from "../i18n/translations.js";
+
+describe("Translations Module", () => {
+  describe("getTranslations", () => {
+    it("should return English translations for 'en'", () => {
+      const translations = getTranslations("en");
+      expect(translations.stockReminder.title).toContain("MedAssist-ng");
+      expect(translations.common.pills).toBe("pills");
+    });
+
+    it("should return German translations for 'de'", () => {
+      const translations = getTranslations("de");
+      expect(translations.stockReminder.title).toContain("MedAssist-ng");
+      expect(translations.common.pills).toBe("Tabletten");
+    });
+
+    it("should fallback to English for unknown language", () => {
+      const translations = getTranslations("fr" as Language);
+      expect(translations.common.pills).toBe("pills");
+    });
+
+    it("should have all required keys in English", () => {
+      const translations = getTranslations("en");
+      
+      // Stock reminder keys
+      expect(translations.stockReminder.subject).toBeDefined();
+      expect(translations.stockReminder.title).toBeDefined();
+      expect(translations.stockReminder.description).toBeDefined();
+      expect(translations.stockReminder.tableHeaders.medication).toBeDefined();
+      
+      // Intake reminder keys
+      expect(translations.intakeReminder.subject).toBeDefined();
+      expect(translations.intakeReminder.title).toBeDefined();
+      expect(translations.intakeReminder.pills).toBeDefined();
+      expect(translations.intakeReminder.takenBy).toBeDefined();
+      
+      // Push notification keys
+      expect(translations.push.stockTitle).toBeDefined();
+      expect(translations.push.intakeTitle).toBeDefined();
+      expect(translations.push.pillsLeft).toBeDefined();
+      expect(translations.push.emptySection).toBeDefined();
+      expect(translations.push.lowSection).toBeDefined();
+    });
+
+    it("should have all required keys in German", () => {
+      const translations = getTranslations("de");
+      
+      // Stock reminder keys
+      expect(translations.stockReminder.subject).toBeDefined();
+      expect(translations.stockReminder.title).toBeDefined();
+      expect(translations.stockReminder.description).toBeDefined();
+      expect(translations.stockReminder.tableHeaders.medication).toBe("Medikament");
+      
+      // Intake reminder keys
+      expect(translations.intakeReminder.subject).toBeDefined();
+      expect(translations.intakeReminder.pills).toBe("Tabletten");
+      expect(translations.intakeReminder.takenBy).toBe("für {name}");
+    });
+  });
+
+  describe("t (template function)", () => {
+    it("should replace single placeholder", () => {
+      const result = t("Hello {name}!", { name: "World" });
+      expect(result).toBe("Hello World!");
+    });
+
+    it("should replace multiple placeholders", () => {
+      const result = t("{count} {type} running low", { count: 3, type: "medications" });
+      expect(result).toBe("3 medications running low");
+    });
+
+    it("should replace same placeholder multiple times", () => {
+      const result = t("{name} and {name} again", { name: "test" });
+      expect(result).toBe("test and test again");
+    });
+
+    it("should leave unmatched placeholders", () => {
+      const result = t("Hello {name}!", {});
+      expect(result).toBe("Hello {name}!");
+    });
+
+    it("should handle numeric values", () => {
+      const result = t("{count} pills left", { count: 42 });
+      expect(result).toBe("42 pills left");
+    });
+
+    it("should handle empty params object", () => {
+      const result = t("No placeholders here", {});
+      expect(result).toBe("No placeholders here");
+    });
+
+    it("should work with real translation strings", () => {
+      const translations = getTranslations("en");
+      
+      // Stock reminder subject
+      const subject = t(translations.stockReminder.subject, { count: 3, s: "s" });
+      expect(subject).toBe("MedAssist-ng Auto-Reminder: 3 Medications Running Low");
+      
+      // Intake reminder description
+      const description = t(translations.intakeReminder.description, { minutes: 30 });
+      expect(description).toBe("Time to take your medication in 30 minutes:");
+      
+      // Push notification
+      const push = t(translations.push.pillsAt, { count: 2, time: "08:00" });
+      expect(push).toBe("2 pills at 08:00");
+    });
+
+    it("should work with German translations", () => {
+      const translations = getTranslations("de");
+      
+      const subject = t(translations.stockReminder.subject, { count: 2, e: "e" });
+      expect(subject).toBe("MedAssist-ng Auto-Erinnerung: 2 Medikamente wird knapp");
+      
+      const takenBy = t(translations.intakeReminder.takenBy, { name: "Daniel" });
+      expect(takenBy).toBe("für Daniel");
+    });
+  });
+
+  describe("getDateLocale", () => {
+    it("should return 'en-US' for English", () => {
+      expect(getDateLocale("en")).toBe("en-US");
+    });
+
+    it("should return 'de-DE' for German", () => {
+      expect(getDateLocale("de")).toBe("de-DE");
+    });
+
+    it("should return 'en-US' for unknown language", () => {
+      expect(getDateLocale("fr" as Language)).toBe("en-US");
+    });
+  });
+});

backend/src/utils/scheduler-utils.ts

@@ -0,0 +1,434 @@
+/**
+ * Shared utility functions for scheduler services.
+ * Exported separately to allow testing without side effects.
+ */
+
+import { getDateLocale, type Language } from "../i18n/translations.js";
+
+export type Blister = { usage: number; every: number; start: string };
+
+// =============================================================================
+// Timezone utilities
+// =============================================================================
+
+/** Get current timezone from TZ env variable or default to UTC */
+export function getTimezone(): string {
+  return process.env.TZ || "UTC";
+}
+
+/** Format a date in the configured timezone */
+export function formatInTimezone(date: Date, tz?: string): string {
+  return date.toLocaleString("de-DE", { 
+    timeZone: tz ?? getTimezone(),
+    day: "2-digit",
+    month: "2-digit",
+    year: "numeric",
+    hour: "2-digit",
+    minute: "2-digit"
+  });
+}
+
+/** Get current hour in the configured timezone */
+export function getCurrentHourInTimezone(tz?: string): number {
+  const now = new Date();
+  const timeStr = now.toLocaleString("en-US", { 
+    timeZone: tz ?? getTimezone(), 
+    hour: "numeric", 
+    hour12: false 
+  });
+  return parseInt(timeStr, 10);
+}
+
+/** Get today's date string in the configured timezone (YYYY-MM-DD) */
+export function getTodayInTimezone(tz?: string): string {
+  const now = new Date();
+  const parts = now.toLocaleDateString("en-CA", { timeZone: tz ?? getTimezone() }).split("-");
+  return parts.join("-"); // YYYY-MM-DD format
+}
+
+/** Calculate the next scheduled time for a given reminder hour */
+export function getNextScheduledTime(reminderHour: number, tz?: string): Date {
+  const now = new Date();
+  const timezone = tz ?? getTimezone();
+  
+  // Get current time components in the target timezone
+  const formatter = new Intl.DateTimeFormat("en-US", {
+    timeZone: timezone,
+    year: "numeric",
+    month: "2-digit",
+    day: "2-digit",
+    hour: "2-digit",
+    minute: "2-digit",
+    hour12: false
+  });
+  
+  const parts = formatter.formatToParts(now);
+  const getPart = (type: string) => parts.find(p => p.type === type)?.value || "0";
+  
+  const currentHour = parseInt(getPart("hour"), 10);
+  const currentMinute = parseInt(getPart("minute"), 10);
+  
+  // Calculate if we need tomorrow
+  const needTomorrow = currentHour > reminderHour || (currentHour === reminderHour && currentMinute > 0);
+  
+  // Handle month overflow simply by adding a day to now if needed
+  let targetDate: Date;
+  if (needTomorrow) {
+    targetDate = new Date(now.getTime() + 24 * 60 * 60 * 1000);
+  } else {
+    targetDate = new Date(now);
+  }
+  
+  // Get the target date's date string in the timezone
+  const targetFormatter = new Intl.DateTimeFormat("en-CA", {
+    timeZone: timezone,
+    year: "numeric",
+    month: "2-digit",
+    day: "2-digit"
+  });
+  const [targetYear, targetMonth, targetDay] = targetFormatter.format(targetDate).split("-").map(Number);
+  
+  // Now we need to find the UTC time that corresponds to reminderHour:00 on targetDate in the target timezone
+  // Use a search approach: start with a guess and adjust
+  const guessUtc = new Date(Date.UTC(targetYear, targetMonth - 1, targetDay, reminderHour, 0, 0, 0));
+  
+  // Check what hour this UTC time corresponds to in the target timezone
+  const checkFormatter = new Intl.DateTimeFormat("en-US", {
+    timeZone: timezone,
+    hour: "2-digit",
+    hour12: false
+  });
+  
+  // Adjust based on the difference
+  const guessHour = parseInt(checkFormatter.format(guessUtc), 10);
+  const hourDiff = guessHour - reminderHour;
+  
+  // Apply correction (if guessHour is higher, we need to subtract time)
+  const correctedUtc = new Date(guessUtc.getTime() - hourDiff * 60 * 60 * 1000);
+  
+  return correctedUtc;
+}
+
+/** Calculate milliseconds until next check at the given reminder hour */
+export function getMsUntilNextCheck(reminderHour: number, tz?: string): number {
+  const next = getNextScheduledTime(reminderHour, tz);
+  return next.getTime() - Date.now();
+}
+
+// =============================================================================
+// Blister/medication parsing utilities
+// =============================================================================
+
+/** Parse blister schedules from JSON columns */
+export function parseBlisters(row: { usageJson: string; everyJson: string; startJson: string }): Blister[] {
+  try {
+    const usage = JSON.parse(row.usageJson) as number[];
+    const every = JSON.parse(row.everyJson) as number[];
+    const start = JSON.parse(row.startJson) as string[];
+    const len = Math.min(usage.length, every.length, start.length);
+    const blisters: Blister[] = [];
+    for (let i = 0; i < len; i++) {
+      blisters.push({ usage: usage[i], every: every[i], start: start[i] });
+    }
+    return blisters;
+  } catch {
+    return [];
+  }
+}
+
+/** Parse takenByJson to array of strings */
+export function parseTakenByJson(takenByJson: string | null | undefined): string[] {
+  if (!takenByJson) return [];
+  try {
+    const parsed = JSON.parse(takenByJson);
+    return Array.isArray(parsed) ? parsed.filter((s: unknown) => typeof s === "string" && s.trim()) : [];
+  } catch {
+    return [];
+  }
+}
+
+// =============================================================================
+// Stock calculation utilities
+// =============================================================================
+
+/** Calculate daily usage from blisters */
+export function calculateDailyUsage(blisters: Blister[]): number {
+  return blisters.reduce((sum, s) => sum + s.usage / s.every, 0);
+}
+
+/** Calculate depletion information for a medication */
+export function calculateDepletionInfo(
+  med: { count: number; blisters: Blister[] }, 
+  language: Language
+): { daysLeft: number | null; depletionDate: string | null } {
+  const dailyUsage = calculateDailyUsage(med.blisters);
+  if (dailyUsage <= 0) return { daysLeft: null, depletionDate: null };
+  
+  const daysLeft = Math.floor(med.count / dailyUsage);
+  const depletionMs = Date.now() + daysLeft * 86_400_000;
+  const depletionDate = new Date(depletionMs).toLocaleDateString(getDateLocale(language), {
+    weekday: "short",
+    day: "2-digit",
+    month: "short",
+  });
+  
+  return { daysLeft, depletionDate };
+}
+
+// =============================================================================
+// Intake reminder utilities
+// =============================================================================
+
+export type UpcomingIntake = {
+  medName: string;
+  usage: number;
+  intakeTime: Date;
+  intakeTimeStr: string;
+  takenBy: string[];
+  pillWeightMg: number | null;
+};
+
+/** 
+ * Get all intakes for today (past and future) - used for repeat reminders.
+ * Returns all intakes scheduled for today in user's timezone.
+ */
+export function getTodaysIntakes(
+  medName: string, 
+  blisters: Blister[], 
+  takenBy: string[], 
+  pillWeightMg: number | null, 
+  locale: string,
+  tz?: string
+): UpcomingIntake[] {
+  const timezone = tz ?? getTimezone();
+  const now = new Date();
+  
+  // Get start and end of today in user's timezone
+  const todayStart = new Date(now.toLocaleString("en-US", { timeZone: timezone }));
+  todayStart.setHours(0, 0, 0, 0);
+  
+  const todayEnd = new Date(now.toLocaleString("en-US", { timeZone: timezone }));
+  todayEnd.setHours(23, 59, 59, 999);
+  
+  const intakes: UpcomingIntake[] = [];
+  
+  for (const blister of blisters) {
+    const startTime = new Date(blister.start).getTime();
+    const intervalMs = blister.every * 24 * 60 * 60 * 1000;
+    
+    if (intervalMs <= 0) continue;
+    
+    // Find all occurrences that fall within today
+    let currentTime = startTime;
+    
+    // If start is in the past, calculate the first occurrence on or after todayStart
+    if (currentTime < todayStart.getTime()) {
+      const elapsed = todayStart.getTime() - startTime;
+      const intervals = Math.floor(elapsed / intervalMs);
+      currentTime = startTime + intervals * intervalMs;
+    }
+    
+    // Collect all intakes for today
+    while (currentTime <= todayEnd.getTime()) {
+      if (currentTime >= todayStart.getTime()) {
+        const intakeDate = new Date(currentTime);
+        intakes.push({
+          medName,
+          usage: blister.usage,
+          intakeTime: intakeDate,
+          intakeTimeStr: intakeDate.toLocaleTimeString(locale, { 
+            hour: "2-digit", 
+            minute: "2-digit",
+            timeZone: timezone
+          }),
+          takenBy,
+          pillWeightMg,
+        });
+      }
+      currentTime += intervalMs;
+    }
+  }
+  
+  return intakes;
+}
+
+/** 
+ * Get upcoming intakes that fall within the reminder window.
+ * Returns intakes that should be notified about right now.
+ */
+export function getUpcomingIntakes(
+  medName: string, 
+  blisters: Blister[], 
+  minutesBefore: number, 
+  takenBy: string[], 
+  pillWeightMg: number | null, 
+  locale: string,
+  tz?: string,
+  nowOverride?: number
+): UpcomingIntake[] {
+  const now = nowOverride ?? Date.now();
+  const timezone = tz ?? getTimezone();
+  
+  // Window to detect if "now" is the right time to send reminder
+  // We check if the notify time (intake - minutesBefore) falls within current minute ±1
+  const windowStart = now - 2 * 60 * 1000; // 2 minutes ago (catch slightly late checks)
+  const windowEnd = now + 1 * 60 * 1000; // 1 minute from now
+  
+  const upcoming: UpcomingIntake[] = [];
+  
+  for (const blister of blisters) {
+    const startTime = new Date(blister.start).getTime();
+    const intervalMs = blister.every * 24 * 60 * 60 * 1000;
+    
+    if (intervalMs <= 0) continue;
+    
+    // Find the next scheduled intake time (could be today or in the future)
+    let nextTime = startTime;
+    
+    // If start is in the past, calculate occurrences
+    if (nextTime < now) {
+      const elapsed = now - startTime;
+      const intervals = Math.floor(elapsed / intervalMs);
+      
+      // Check the current occurrence (today's scheduled time, even if past)
+      const currentOccurrence = startTime + intervals * intervalMs;
+      // And the next occurrence
+      const nextOccurrence = startTime + (intervals + 1) * intervalMs;
+      
+      // If today's occurrence is within the reminder window, use it
+      // (intake hasn't happened yet, we should remind)
+      const currentNotifyTime = currentOccurrence - minutesBefore * 60 * 1000;
+      if (currentNotifyTime >= windowStart && currentOccurrence > now) {
+        nextTime = currentOccurrence;
+      } else {
+        nextTime = nextOccurrence;
+      }
+    }
+    
+    // Calculate when we should notify for this intake
+    const notifyTime = nextTime - minutesBefore * 60 * 1000;
+    
+    if (notifyTime >= windowStart && notifyTime <= windowEnd) {
+      const intakeDate = new Date(nextTime);
+      upcoming.push({
+        medName,
+        usage: blister.usage,
+        intakeTime: intakeDate,
+        intakeTimeStr: intakeDate.toLocaleTimeString(locale, { 
+          hour: "2-digit", 
+          minute: "2-digit",
+          timeZone: timezone
+        }),
+        takenBy,
+        pillWeightMg,
+      });
+    }
+  }
+  
+  return upcoming;
+}
+
+// =============================================================================
+// State file utilities
+// =============================================================================
+
+export type ReminderState = {
+  lastAutoEmailSent: string | null;
+  lastAutoEmailDate: string | null;
+  notifiedMedications: string[];
+  nextScheduledCheck: string | null;
+  lastNotificationType: "stock" | "intake" | null;
+  lastNotificationChannel: "email" | "push" | "both" | null;
+};
+
+export type IntakeReminderEntry = {
+  firstSentAt: number;   // Timestamp when first reminder was sent
+  lastSentAt: number;    // Timestamp when last reminder was sent  
+  sendCount: number;     // How many times reminder was sent
+};
+
+export type IntakeReminderState = {
+  reminders: Record<string, IntakeReminderEntry>;  // key -> entry
+};
+
+/** Create default reminder state */
+export function createDefaultReminderState(): ReminderState {
+  return {
+    lastAutoEmailSent: null,
+    lastAutoEmailDate: null,
+    notifiedMedications: [],
+    nextScheduledCheck: null,
+    lastNotificationType: null,
+    lastNotificationChannel: null,
+  };
+}
+
+/** Create default intake reminder state */
+export function createDefaultIntakeReminderState(): IntakeReminderState {
+  return { reminders: {} };
+}
+
+/** Parse reminder state from JSON string */
+export function parseReminderState(json: string): ReminderState {
+  try {
+    const saved = JSON.parse(json);
+    return {
+      lastAutoEmailSent: saved.lastAutoEmailSent ?? null,
+      lastAutoEmailDate: saved.lastAutoEmailDate ?? null,
+      notifiedMedications: saved.notifiedMedications ?? [],
+      nextScheduledCheck: saved.nextScheduledCheck ?? null,
+      lastNotificationType: saved.lastNotificationType ?? null,
+      lastNotificationChannel: saved.lastNotificationChannel ?? null,
+    };
+  } catch {
+    return createDefaultReminderState();
+  }
+}
+
+/** Parse intake reminder state from JSON string (backward compatible) */
+export function parseIntakeReminderState(json: string): IntakeReminderState {
+  try {
+    const saved = JSON.parse(json);
+    
+    // Backward compatibility: convert old array format to new map format
+    if (Array.isArray(saved.sentReminders)) {
+      const reminders: Record<string, IntakeReminderEntry> = {};
+      const now = Date.now();
+      for (const key of saved.sentReminders) {
+        reminders[key] = {
+          firstSentAt: now,
+          lastSentAt: now,
+          sendCount: 1,
+        };
+      }
+      return { reminders };
+    }
+    
+    // New format
+    return {
+      reminders: saved.reminders ?? {},
+    };
+  } catch {
+    return createDefaultIntakeReminderState();
+  }
+}
+
+/** Clean up old intake reminder entries (older than given milliseconds) */
+/** Clean up old intake reminder entries (using timezone-aware day check) */
+export function cleanOldIntakeReminders(reminders: Record<string, IntakeReminderEntry>, tz: string): Record<string, IntakeReminderEntry> {
+  // Get start of today in user's timezone
+  const now = new Date();
+  const todayStart = new Date(now.toLocaleString("en-US", { timeZone: tz }));
+  todayStart.setHours(0, 0, 0, 0);
+  const todayStartMs = todayStart.getTime();
+  
+  // Keep only reminders from today onwards (based on dose timestamp in key)
+  const cleaned: Record<string, IntakeReminderEntry> = {};
+  for (const [key, entry] of Object.entries(reminders)) {
+    const timestamp = parseInt(key.split(":").pop() || "0", 10);
+    if (timestamp >= todayStartMs) {
+      cleaned[key] = entry;
+    }
+  }
+  return cleaned;
+}

backend/src/utils/server-config.ts

@@ -0,0 +1,125 @@
+/**
+ * Utility functions for server configuration.
+ * Exported separately to allow testing without triggering server start.
+ */
+
+import { existsSync, mkdirSync } from "fs";
+import { resolve } from "path";
+import type { CookieSerializeOptions } from "@fastify/cookie";
+
+/**
+ * Parse comma-separated CORS origins string
+ */
+export function parseCorsOrigins(originsStr: string): string[] {
+  return originsStr
+    .split(",")
+    .map((o) => o.trim())
+    .filter((o) => o.length > 0);
+}
+
+/**
+ * Build base cookie options for access token
+ */
+export function buildBaseCookieOptions(
+  accessTtlMinutes: number,
+  isProduction: boolean
+): CookieSerializeOptions {
+  return {
+    httpOnly: true,
+    secure: isProduction,
+    sameSite: "lax",
+    path: "/",
+    maxAge: accessTtlMinutes * 60, // Convert minutes to seconds
+  };
+}
+
+/**
+ * Build refresh cookie options (extends base with longer TTL)
+ */
+export function buildRefreshCookieOptions(
+  baseCookieOptions: CookieSerializeOptions,
+  refreshTtlDays: number
+): CookieSerializeOptions {
+  return {
+    ...baseCookieOptions,
+    maxAge: refreshTtlDays * 24 * 60 * 60, // Convert days to seconds
+  };
+}
+
+/**
+ * Build complete app configuration object
+ */
+export interface AppConfigOptions {
+  jwtSecret?: string;
+  refreshSecret?: string;
+  accessTtlMinutes: number;
+  refreshTtlDays: number;
+  isProduction: boolean;
+}
+
+export interface AppConfig {
+  accessSecret: string;
+  refreshSecret: string;
+  accessTtl: number;
+  refreshTtl: number;
+  cookieOptions: CookieSerializeOptions;
+  refreshCookieOptions: CookieSerializeOptions;
+}
+
+export function buildAppConfig(options: AppConfigOptions): AppConfig {
+  const cookieOptions = buildBaseCookieOptions(
+    options.accessTtlMinutes,
+    options.isProduction
+  );
+  const refreshCookieOptions = buildRefreshCookieOptions(
+    cookieOptions,
+    options.refreshTtlDays
+  );
+
+  return {
+    accessSecret: options.jwtSecret || "",
+    refreshSecret: options.refreshSecret || "",
+    accessTtl: options.accessTtlMinutes,
+    refreshTtl: options.refreshTtlDays,
+    cookieOptions,
+    refreshCookieOptions,
+  };
+}
+
+/**
+ * Ensure images directory exists
+ */
+export function ensureImagesDirectory(cwd?: string): string {
+  const basePath = cwd || process.cwd();
+  const imagesDir = resolve(basePath, "data/images");
+  if (!existsSync(imagesDir)) {
+    mkdirSync(imagesDir, { recursive: true });
+  }
+  return imagesDir;
+}
+
+/**
+ * Get JWT configuration based on auth enabled status
+ */
+export interface JwtConfig {
+  secret: string;
+  cookie: {
+    cookieName: string;
+    signed: boolean;
+  };
+}
+
+export function getJwtConfig(authEnabled: boolean, jwtSecret?: string): JwtConfig {
+  const effectiveSecret =
+    authEnabled && jwtSecret
+      ? jwtSecret
+      : "auth-disabled-no-secret-needed";
+
+  return {
+    secret: effectiveSecret,
+    cookie: {
+      cookieName: "access_token",
+      signed: false,
+    },
+  };
+}

backend/vitest.config.ts

@@ -0,0 +1,18 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  test: {
+    globals: true,
+    environment: "node",
+    include: ["src/**/*.test.ts"],
+    setupFiles: ["src/test/setup.ts"],
+    // Run tests sequentially to avoid DB conflicts
+    poolOptions: {
+      threads: {
+        singleThread: true,
+      },
+    },
+    // Timeout for longer integration tests
+    testTimeout: 10000,
+  },
+});

frontend/package-lock.json

@@ -1,19 +1,19 @@
 {
   "name": "medassist-ng-frontend",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "medassist-ng-frontend",
-      "version": "1.0.1",
+      "version": "1.0.2",
       "dependencies": {
         "i18next": "^24.2.2",
         "i18next-browser-languagedetector": "^8.0.4",
         "react": "^18.3.1",
         "react-dom": "^18.3.1",
         "react-i18next": "^15.4.1",
-        "react-router-dom": "^7.11.0",
+        "react-router-dom": "^7.12.0",
         "zod": "^3.23.8"
       },
       "devDependencies": {
@@ -1713,9 +1713,9 @@
       }
     },
     "node_modules/react-router": {
-      "version": "7.11.0",
-      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.11.0.tgz",
-      "integrity": "sha512-uI4JkMmjbWCZc01WVP2cH7ZfSzH91JAZUDd7/nIprDgWxBV1TkkmLToFh7EbMTcMak8URFRa2YoBL/W8GWnCTQ==",
+      "version": "7.12.0",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.12.0.tgz",
+      "integrity": "sha512-kTPDYPFzDVGIIGNLS5VJykK0HfHLY5MF3b+xj0/tTyNYL1gF1qs7u67Z9jEhQk2sQ98SUaHxlG31g1JtF7IfVw==",
       "license": "MIT",
       "dependencies": {
         "cookie": "^1.0.1",
@@ -1735,12 +1735,12 @@
       }
     },
     "node_modules/react-router-dom": {
-      "version": "7.11.0",
-      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-7.11.0.tgz",
-      "integrity": "sha512-e49Ir/kMGRzFOOrYQBdoitq3ULigw4lKbAyKusnvtDu2t4dBX4AGYPrzNvorXmVuOyeakai6FUPW5MmibvVG8g==",
+      "version": "7.12.0",
+      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-7.12.0.tgz",
+      "integrity": "sha512-pfO9fiBcpEfX4Tx+iTYKDtPbrSLLCbwJ5EqP+SPYQu1VYCXdy79GSj0wttR0U4cikVdlImZuEZ/9ZNCgoaxwBA==",
       "license": "MIT",
       "dependencies": {
-        "react-router": "7.11.0"
+        "react-router": "7.12.0"
       },
       "engines": {
         "node": ">=20.0.0"

frontend/package.json

@@ -1,7 +1,7 @@
 {
   "name": "medassist-ng-frontend",
   "private": true,
-  "version": "1.0.2",
+  "version": "1.1.0",
   "type": "module",
   "scripts": {
     "dev": "vite",
@@ -15,7 +15,7 @@
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-i18next": "^15.4.1",
-    "react-router-dom": "^7.11.0",
+    "react-router-dom": "^7.12.0",
     "zod": "^3.23.8"
   },
   "devDependencies": {

frontend/src/App.tsx

@@ -32,8 +32,8 @@ type PlannerRow = {
 	medicationName: string;
 	totalPills: number;
 	plannerUsage: number;
-	stripSize: number;
-	stripsNeeded: number;
+	blisterSize: number;
+	blistersNeeded: number;
 	fullBlisters: number;
 	loosePills: number;
 	enough: boolean;
@@ -289,6 +289,10 @@ function AppContent() {
 		notificationEmail: "",
 		reminderDaysBefore: 7,
 		repeatDailyReminders: false,
+		skipRemindersForTakenDoses: false,
+		repeatRemindersEnabled: false,
+		reminderRepeatIntervalMinutes: 30,
+		maxNaggingReminders: 5,
 		lowStockDays: 30,
 		normalStockDays: 90,
 		highStockDays: 180,
@@ -347,6 +351,12 @@ function AppContent() {
 	const [shareGenerating, setShareGenerating] = useState(false);
 	const [shareLink, setShareLink] = useState<string | null>(null);
 	const [shareCopied, setShareCopied] = useState(false);
+	// Export/Import state
+	const [exporting, setExporting] = useState(false);
+	const [importing, setImporting] = useState(false);
+	const [includeSensitiveData, setIncludeSensitiveData] = useState(false);
+	const [showImportConfirm, setShowImportConfirm] = useState(false);
+	const [pendingImportData, setPendingImportData] = useState<any>(null);
 	// Collapsed days state (manually collapsed days are persisted)
 	const [manuallyCollapsedDays, setManuallyCollapsedDays] = useState<Set<string>>(new Set());
 	const [manuallyExpandedDays, setManuallyExpandedDays] = useState<Set<string>>(new Set());
@@ -358,15 +368,12 @@ function AppContent() {
 			setScheduleDays(storedDays ? Number(storedDays) : 30);
 			
 			// Load manually collapsed/expanded days from localStorage
-			const storedCollapsed = localStorage.getItem(userStorageKey(user.id, "collapsedDays"));
-			const storedExpanded = localStorage.getItem(userStorageKey(user.id, "expandedDays"));
-			try {
-				setManuallyCollapsedDays(storedCollapsed ? new Set(JSON.parse(storedCollapsed)) : new Set());
-				setManuallyExpandedDays(storedExpanded ? new Set(JSON.parse(storedExpanded)) : new Set());
-			} catch {
-				setManuallyCollapsedDays(new Set());
-				setManuallyExpandedDays(new Set());
-			}
+			const { collapsed, expanded } = loadCollapsedDaysFromStorage(
+				userStorageKey(user.id, "collapsedDays"),
+				userStorageKey(user.id, "expandedDays")
+			);
+			setManuallyCollapsedDays(collapsed);
+			setManuallyExpandedDays(expanded);
 		}
 	}, [user?.id]);
 
@@ -630,6 +637,10 @@ function AppContent() {
 			notificationEmail: settings.notificationEmail,
 			reminderDaysBefore: settings.reminderDaysBefore,
 			repeatDailyReminders: settings.repeatDailyReminders,
+			skipRemindersForTakenDoses: settings.skipRemindersForTakenDoses,
+			repeatRemindersEnabled: settings.repeatRemindersEnabled,
+			reminderRepeatIntervalMinutes: settings.reminderRepeatIntervalMinutes,
+			maxNaggingReminders: settings.maxNaggingReminders ?? 5,
 			lowStockDays: settings.lowStockDays,
 			normalStockDays: settings.normalStockDays,
 			highStockDays: settings.highStockDays,
@@ -773,6 +784,110 @@ function AppContent() {
 		setSendingReminderEmail(false);
 	}
 
+	// Export data to JSON file
+	async function handleExport() {
+		setExporting(true);
+		try {
+			const res = await fetch(`/api/export?includeSensitive=${includeSensitiveData}`, {
+				credentials: "include",
+			});
+			if (!res.ok) throw new Error("Export failed");
+			const data = await res.json();
+			
+			// Create download
+			const blob = new Blob([JSON.stringify(data, null, 2)], { type: "application/json" });
+			const url = URL.createObjectURL(blob);
+			const a = document.createElement("a");
+			const dateStr = new Date().toISOString().split("T")[0];
+			a.href = url;
+			a.download = `${t('exportImport.downloadFilename')}-${dateStr}.json`;
+			document.body.appendChild(a);
+			a.click();
+			document.body.removeChild(a);
+			URL.revokeObjectURL(url);
+		} catch (err) {
+			console.error("Export error:", err);
+		}
+		setExporting(false);
+	}
+
+	// Handle file selection for import
+	function handleImportFileSelect(e: React.ChangeEvent<HTMLInputElement>) {
+		const file = e.target.files?.[0];
+		if (!file) return;
+		
+		const reader = new FileReader();
+		reader.onload = (event) => {
+			try {
+				const data = JSON.parse(event.target?.result as string);
+				if (!data.version || !data.exportedAt) {
+					alert(t('exportImport.invalidFile'));
+					return;
+				}
+				setPendingImportData(data);
+				setShowImportConfirm(true);
+			} catch {
+				alert(t('exportImport.invalidFile'));
+			}
+		};
+		reader.readAsText(file);
+		// Reset file input
+		e.target.value = "";
+	}
+
+	// Confirm and execute import
+	async function handleImportConfirm() {
+		if (!pendingImportData) return;
+		setImporting(true);
+		setShowImportConfirm(false);
+		
+		try {
+			const res = await fetch("/api/import", {
+				method: "POST",
+				headers: { "Content-Type": "application/json" },
+				credentials: "include",
+				body: JSON.stringify(pendingImportData),
+			});
+			
+			if (!res.ok) {
+				const err = await res.json();
+				alert(t('exportImport.importError') + ": " + (err.error || "Unknown error"));
+				return;
+			}
+			
+			const result = await res.json();
+			alert(t('exportImport.importSuccess') + "\n" + t('exportImport.importSuccessDetails', {
+				medications: result.imported.medications,
+				doses: result.imported.doseHistory,
+				shares: result.imported.shareLinks,
+			}));
+			
+			// Reload all data
+			loadMeds();
+			loadSettings();
+			loadTakenDoses();
+		} catch (err) {
+			console.error("Import error:", err);
+			alert(t('exportImport.importError'));
+		}
+		
+		setPendingImportData(null);
+		setImporting(false);
+	}
+
+	// Helper function to load taken doses (extracted from useEffect)
+	async function loadTakenDoses() {
+		try {
+			const res = await fetch("/api/doses/taken", { credentials: "include" });
+			if (res.ok) {
+				const data = await res.json();
+				setTakenDoses(new Set(data.doses.map((d: { doseId: string }) => d.doseId)));
+			}
+		} catch {
+			// Silently fail
+		}
+	}
+
 	async function deleteMed(id: number) {
 		await fetch(`/api/medications/${id}`, { method: "DELETE" }).catch(() => null);
 		if (editingId === id) resetForm();
@@ -1855,7 +1970,7 @@ function AppContent() {
 												<div key={row.medicationId} className="table-row clickable" onClick={() => med && setSelectedMed(med)}>
 													<span data-label={t('planner.table.medication')} className="cell-with-avatar"><MedicationAvatar name={row.medicationName} imageUrl={med?.imageUrl} />{row.medicationName}</span>
 													<span data-label={t('planner.table.usage')}><strong>{row.plannerUsage}</strong>&nbsp;{t('common.pills')}</span>
-													<span data-label={t('planner.table.blisters')}>{row.stripsNeeded} × {row.stripSize}</span>
+													<span data-label={t('planner.table.blisters')}>{row.blistersNeeded} × {row.blisterSize}</span>
 													<span data-label={t('planner.table.available')}>
 														{row.fullBlisters} {t('common.blisters')}{row.loosePills > 0 && ` + ${row.loosePills} ${t('common.pills')}`}
 													</span>
@@ -1930,7 +2045,7 @@ function AppContent() {
 													<label className={`toggle-switch small${!settings.emailEnabled ? ' disabled' : ''}`}>
 														<input
 															type="checkbox"
-															checked={settings.emailStockReminders}
+															checked={settings.smtpHost && settings.emailEnabled ? settings.emailStockReminders : false}
 															onChange={(e) => setSettings({ ...settings, emailStockReminders: e.target.checked })}
 															disabled={!settings.emailEnabled}
 														/>
@@ -1941,7 +2056,7 @@ function AppContent() {
 													<label className={`toggle-switch small${!settings.shoutrrrEnabled ? ' disabled' : ''}`}>
 														<input
 															type="checkbox"
-															checked={settings.shoutrrrStockReminders}
+															checked={settings.shoutrrrUrl && settings.shoutrrrEnabled ? settings.shoutrrrStockReminders : false}
 															onChange={(e) => setSettings({ ...settings, shoutrrrStockReminders: e.target.checked })}
 															disabled={!settings.shoutrrrEnabled}
 														/>
@@ -1955,7 +2070,7 @@ function AppContent() {
 													<label className={`toggle-switch small${!settings.emailEnabled ? ' disabled' : ''}`}>
 														<input
 															type="checkbox"
-															checked={settings.emailIntakeReminders}
+															checked={settings.smtpHost && settings.emailEnabled ? settings.emailIntakeReminders : false}
 															onChange={(e) => setSettings({ ...settings, emailIntakeReminders: e.target.checked })}
 															disabled={!settings.emailEnabled}
 														/>
@@ -1966,7 +2081,7 @@ function AppContent() {
 													<label className={`toggle-switch small${!settings.shoutrrrEnabled ? ' disabled' : ''}`}>
 														<input
 															type="checkbox"
-															checked={settings.shoutrrrIntakeReminders}
+															checked={settings.shoutrrrUrl && settings.shoutrrrEnabled ? settings.shoutrrrIntakeReminders : false}
 															onChange={(e) => setSettings({ ...settings, shoutrrrIntakeReminders: e.target.checked })}
 															disabled={!settings.shoutrrrEnabled}
 														/>
@@ -1978,16 +2093,94 @@ function AppContent() {
 										{!settings.emailEnabled && !settings.shoutrrrEnabled && (
 											<p className="hint-text">{t('settings.notifications.enableHint')}</p>
 										)}
+										
+										{/* Skip reminders for taken doses */}
+										<div className="setting-row compact" style={{marginTop: "16px", paddingTop: "16px", borderTop: "1px solid var(--border-color)"}}>
+											<label className="setting-label">
+												{t('settings.notifications.skipTakenDoses')}
+												<span className="info-tooltip small" data-tooltip={t('settings.notifications.skipTakenDosesTooltip')}>ⓘ</span>
+											</label>
+											<label className={`toggle-switch small${!settings.emailEnabled && !settings.shoutrrrEnabled ? ' disabled' : ''}`}>
+												<input
+													type="checkbox"
+													checked={settings.skipRemindersForTakenDoses}
+													onChange={(e) => setSettings({ ...settings, skipRemindersForTakenDoses: e.target.checked })}
+													disabled={!settings.emailEnabled && !settings.shoutrrrEnabled}
+												/>
+												<span className="toggle-slider"></span>
+											</label>
+										</div>
+										
+										{/* Repeat reminders for missed doses */}
+										<div className="setting-row compact" style={{marginTop: "12px"}}>
+											<label className="setting-label">
+												{t('settings.notifications.repeatReminders')}
+												<span className="info-tooltip small" data-tooltip={t('settings.notifications.repeatRemindersTooltip')}>ⓘ</span>
+											</label>
+											<label className={`toggle-switch small${!settings.emailEnabled && !settings.shoutrrrEnabled ? ' disabled' : ''}`}>
+												<input
+													type="checkbox"
+													checked={settings.repeatRemindersEnabled}
+													onChange={(e) => setSettings({ ...settings, repeatRemindersEnabled: e.target.checked })}
+													disabled={!settings.emailEnabled && !settings.shoutrrrEnabled}
+												/>
+												<span className="toggle-slider"></span>
+											</label>
+										</div>
+										
+										{/* Reminder interval (only shown when repeat is enabled) */}
+										{settings.repeatRemindersEnabled && (
+											<>
+												<div className="setting-row compact" style={{marginTop: "12px", marginLeft: "24px"}}>
+													<label className="setting-label">
+														{t('settings.notifications.reminderInterval')}
+														<span className="info-tooltip small" data-tooltip={t('settings.notifications.reminderIntervalTooltip')}>ⓘ</span>
+													</label>
+													<input
+														type="number"
+														min="5"
+														max="480"
+														step="5"
+														value={settings.reminderRepeatIntervalMinutes}
+														onChange={(e) => setSettings({ ...settings, reminderRepeatIntervalMinutes: parseInt(e.target.value) || 30 })}
+														style={{width: "80px", textAlign: "center"}}
+													/>
+												</div>
+												<div className="setting-row compact" style={{marginTop: "8px", marginLeft: "24px"}}>
+													<label className="setting-label">
+														{t('settings.notifications.maxNaggingReminders')}
+														<span className="info-tooltip small" data-tooltip={t('settings.notifications.maxNaggingRemindersTooltip')}>ⓘ</span>
+													</label>
+													<input
+														type="number"
+														min="1"
+														max="20"
+														step="1"
+														value={settings.maxNaggingReminders ?? 5}
+														onChange={(e) => setSettings({ ...settings, maxNaggingReminders: parseInt(e.target.value) || 5 })}
+														style={{width: "80px", textAlign: "center"}}
+													/>
+												</div>
+											</>
+										)}
 									</div>
 
 									<div className="setting-section">
 										<div className="section-header">
 											<h3>{t('settings.notifications.email')}</h3>
-											<label className="toggle-switch small">
+											<label className={`toggle-switch small${!settings.smtpHost ? ' disabled' : ''}`}>
 												<input
 													type="checkbox"
-													checked={settings.emailEnabled}
-													onChange={(e) => setSettings({ ...settings, emailEnabled: e.target.checked })}
+													checked={settings.smtpHost ? settings.emailEnabled : false}
+													onChange={(e) => {
+														const newVal = e.target.checked;
+														if (!newVal && !settings.shoutrrrEnabled) {
+															setSettings({ ...settings, emailEnabled: false, emailStockReminders: false, emailIntakeReminders: false, skipRemindersForTakenDoses: false, repeatRemindersEnabled: false });
+														} else {
+															setSettings({ ...settings, emailEnabled: newVal });
+														}
+													}}
+													disabled={!settings.smtpHost}
 												/>
 												<span className="toggle-slider"></span>
 											</label>
@@ -2031,7 +2224,14 @@ function AppContent() {
 												<input
 													type="checkbox"
 													checked={settings.shoutrrrEnabled}
-													onChange={(e) => setSettings({ ...settings, shoutrrrEnabled: e.target.checked })}
+													onChange={(e) => {
+														const newVal = e.target.checked;
+														if (!newVal && !settings.emailEnabled) {
+															setSettings({ ...settings, shoutrrrEnabled: false, shoutrrrStockReminders: false, shoutrrrIntakeReminders: false, skipRemindersForTakenDoses: false, repeatRemindersEnabled: false });
+														} else {
+															setSettings({ ...settings, shoutrrrEnabled: newVal });
+														}
+													}}
 												/>
 												<span className="toggle-slider"></span>
 											</label>
@@ -2209,6 +2409,70 @@ function AppContent() {
 									</div>
 								</article>
 
+								{/* Export/Import Section */}
+								<article className="card">
+									<div className="card-head">
+										<h2>{t('exportImport.title')}</h2>
+									</div>
+									<div className="setting-section">
+										<p className="hint-text" style={{marginBottom: "16px"}}>{t('exportImport.description')}</p>
+										
+										{/* Export */}
+										<div className="setting-group" style={{marginBottom: "24px"}}>
+											<div className="export-controls">
+												<label className="checkbox-label" style={{marginBottom: "12px", display: "flex", alignItems: "center", gap: "8px"}}>
+													<input
+														type="checkbox"
+														checked={includeSensitiveData}
+														onChange={(e) => setIncludeSensitiveData(e.target.checked)}
+													/>
+													<span>{t('exportImport.includeSensitive')}</span>
+												</label>
+												{includeSensitiveData && (
+													<p className="hint-text warning-text" style={{marginBottom: "12px", color: "var(--warning)", fontSize: "0.85rem"}}>
+														⚠️ {t('exportImport.sensitiveWarning')}
+													</p>
+												)}
+												<button
+													type="button"
+													className="secondary"
+													onClick={handleExport}
+													disabled={exporting}
+													style={{marginRight: "12px"}}
+												>
+													{exporting ? t('exportImport.exporting') : t('exportImport.export')}
+												</button>
+											</div>
+										</div>
+										
+										{/* Import */}
+										<div className="setting-group">
+											<div className="import-controls">
+												<label className="secondary" style={{
+													cursor: "pointer",
+													display: "inline-block",
+													padding: "0.7rem 1.25rem",
+													borderRadius: "var(--btn-radius)",
+													background: "var(--bg-tertiary)",
+													color: "var(--text-primary)",
+													border: "1px solid var(--border-secondary)",
+													fontWeight: 600,
+													fontSize: "0.9rem"
+												}}>
+													{importing ? t('exportImport.importing') : t('exportImport.import')}
+													<input
+														type="file"
+														accept=".json,application/json"
+														onChange={handleImportFileSelect}
+														disabled={importing}
+														style={{display: "none"}}
+													/>
+												</label>
+											</div>
+										</div>
+									</div>
+								</article>
+
 								<div className="form-footer">
 									<button type="submit" disabled={settingsSaving || (!settingsChanged && settingsSaved)}>
 										{settingsSaving ? t('common.saving') : settingsSaved && !settingsChanged ? t('common.saved') : t('settings.saveSettings')}
@@ -2216,6 +2480,39 @@ function AppContent() {
 								</div>
 							</form>
 						)}
+
+						{/* Import Confirmation Modal */}
+						{showImportConfirm && (
+							<div className="modal-overlay" onClick={() => setShowImportConfirm(false)}>
+								<div className="modal-content" onClick={(e) => e.stopPropagation()} style={{maxWidth: "450px"}}>
+									<button className="modal-close" onClick={() => { setShowImportConfirm(false); setPendingImportData(null); }}>×</button>
+									<h2 style={{marginBottom: "16px", paddingRight: "2rem"}}>{t('exportImport.confirmImport')}</h2>
+									<p style={{marginBottom: "12px"}}>{t('exportImport.confirmImportMessage')}</p>
+									<p className="warning-text" style={{marginBottom: "24px"}}>
+										⚠️ {t('exportImport.confirmImportWarning')}
+									</p>
+									<div className="modal-footer" style={{padding: "1rem 0 0 0", borderTop: "none", justifyContent: "flex-end"}}>
+										<button
+											type="button"
+											className="ghost"
+											onClick={() => {
+												setShowImportConfirm(false);
+												setPendingImportData(null);
+											}}
+										>
+											{t('exportImport.cancelButton')}
+										</button>
+										<button
+											type="button"
+											className="danger"
+											onClick={handleImportConfirm}
+										>
+											{t('exportImport.confirmButton')}
+										</button>
+									</div>
+								</div>
+							</div>
+						)}
 					</section>
 				} />
 
@@ -2895,22 +3192,36 @@ function toIsoString(value: string) {
 	return Number.isNaN(date.getTime()) ? new Date().toISOString() : date.toISOString();
 }
 
+function pad2(n: number): string {
+	return String(n).padStart(2, '0');
+}
+
+function loadCollapsedDaysFromStorage(collapsedKey: string, expandedKey: string): { collapsed: Set<string>; expanded: Set<string> } {
+	const storedCollapsed = localStorage.getItem(collapsedKey);
+	const storedExpanded = localStorage.getItem(expandedKey);
+	try {
+		return {
+			collapsed: storedCollapsed ? new Set(JSON.parse(storedCollapsed)) : new Set(),
+			expanded: storedExpanded ? new Set(JSON.parse(storedExpanded)) : new Set()
+		};
+	} catch {
+		return {
+			collapsed: new Set(),
+			expanded: new Set()
+		};
+	}
+}
+
 function toDateValue(date: Date | string): string {
 	const d = typeof date === 'string' ? new Date(date) : date;
-	if (Number.isNaN(d.getTime())) {
-		const now = new Date();
-		return `${now.getFullYear()}-${String(now.getMonth() + 1).padStart(2, '0')}-${String(now.getDate()).padStart(2, '0')}`;
-	}
-	return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`;
+	const fallback = Number.isNaN(d.getTime()) ? new Date() : d;
+	return `${fallback.getFullYear()}-${pad2(fallback.getMonth() + 1)}-${pad2(fallback.getDate())}`;
 }
 
 function toTimeValue(date: Date | string): string {
 	const d = typeof date === 'string' ? new Date(date) : date;
-	if (Number.isNaN(d.getTime())) {
-		const now = new Date();
-		return `${String(now.getHours()).padStart(2, '0')}:${String(now.getMinutes()).padStart(2, '0')}`;
-	}
-	return `${String(d.getHours()).padStart(2, '0')}:${String(d.getMinutes()).padStart(2, '0')}`;
+	const fallback = Number.isNaN(d.getTime()) ? new Date() : d;
+	return `${pad2(fallback.getHours())}:${pad2(fallback.getMinutes())}`;
 }
 
 function combineDateAndTime(dateStr: string, timeStr: string): string {
@@ -2920,23 +3231,9 @@ function combineDateAndTime(dateStr: string, timeStr: string): string {
 
 function toInputValue(value: string) {
 	const date = new Date(value);
-	if (Number.isNaN(date.getTime())) {
-		// Return current local time in datetime-local format
-		const now = new Date();
-		const year = now.getFullYear();
-		const month = String(now.getMonth() + 1).padStart(2, '0');
-		const day = String(now.getDate()).padStart(2, '0');
-		const hours = String(now.getHours()).padStart(2, '0');
-		const minutes = String(now.getMinutes()).padStart(2, '0');
-		return `${year}-${month}-${day}T${hours}:${minutes}`;
-	}
-	// Convert to local time format for datetime-local input
-	const year = date.getFullYear();
-	const month = String(date.getMonth() + 1).padStart(2, '0');
-	const day = String(date.getDate()).padStart(2, '0');
-	const hours = String(date.getHours()).padStart(2, '0');
-	const minutes = String(date.getMinutes()).padStart(2, '0');
-	return `${year}-${month}-${day}T${hours}:${minutes}`;
+	const d = Number.isNaN(date.getTime()) ? new Date() : date;
+	// Use existing helper functions to avoid duplication
+	return `${toDateValue(d)}T${toTimeValue(d)}`;
 }
 
 function formatDateTime(value: string, locale: string) {
@@ -3449,15 +3746,12 @@ function SharedSchedule() {
 	// Load collapsed/expanded state from localStorage
 	useEffect(() => {
 		if (token && typeof window !== "undefined") {
-			const storedCollapsed = localStorage.getItem(`share_${token}_collapsedDays`);
-			const storedExpanded = localStorage.getItem(`share_${token}_expandedDays`);
-			try {
-				setManuallyCollapsedDays(storedCollapsed ? new Set(JSON.parse(storedCollapsed)) : new Set());
-				setManuallyExpandedDays(storedExpanded ? new Set(JSON.parse(storedExpanded)) : new Set());
-			} catch {
-				setManuallyCollapsedDays(new Set());
-				setManuallyExpandedDays(new Set());
-			}
+			const { collapsed, expanded } = loadCollapsedDaysFromStorage(
+				`share_${token}_collapsedDays`,
+				`share_${token}_expandedDays`
+			);
+			setManuallyCollapsedDays(collapsed);
+			setManuallyExpandedDays(expanded);
 		}
 	}, [token]);
 

frontend/src/components/Auth.tsx

@@ -421,7 +421,32 @@ export function RegisterForm({ onSuccess, onSwitchToLogin }: { onSuccess?: () =>
           {t("auth.register", "Create Account")}
         </h2>
 
-        <form onSubmit={handleSubmit} className="auth-form">
+        {/* SSO Login Button - also show on registration */}
+        {authState?.oidcEnabled && (
+          <div className="auth-sso">
+            <button
+              type="button"
+              className="btn btn-secondary auth-submit sso-btn"
+              onClick={() => window.location.href = "/api/auth/oidc/login"}
+            >
+              <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" className="sso-icon">
+                <path d="M15 3h4a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2h-4"/>
+                <polyline points="10 17 15 12 10 7"/>
+                <line x1="15" y1="12" x2="3" y2="12"/>
+              </svg>
+              {t("auth.loginWithSSO", "Login with {{provider}}", { provider: authState.oidcProviderName || "SSO" })}
+            </button>
+            {authState?.localAuthEnabled && (
+              <div className="auth-divider">
+                <span>{t("auth.or", "or")}</span>
+              </div>
+            )}
+          </div>
+        )}
+
+        {/* Local Registration Form - only show if local auth is enabled */}
+        {authState?.localAuthEnabled && (
+          <form onSubmit={handleSubmit} className="auth-form">
           {error && <div className="auth-error">{error}</div>}
 
           <div className="form-group">
@@ -471,6 +496,7 @@ export function RegisterForm({ onSuccess, onSwitchToLogin }: { onSuccess?: () =>
             {loading ? t("common.loading", "Loading...") : t("auth.register", "Create Account")}
           </button>
         </form>
+        )}
 
         {onSwitchToLogin && (
           <div className="auth-links">

frontend/src/i18n/de.json

@@ -157,7 +157,15 @@
       "push": "Push",
       "stockReminders": "Bestands-Erinnerungen",
       "intakeReminders": "Einnahme-Erinnerungen",
-      "enableHint": "Aktivieren Sie mindestens einen Kanal, um Benachrichtigungen zu erhalten."
+      "enableHint": "Aktivieren Sie mindestens einen Kanal, um Benachrichtigungen zu erhalten.",
+      "skipTakenDoses": "Keine Erinnerungen für genommene Dosen",
+      "skipTakenDosesTooltip": "Sende keine Einnahme-Erinnerungen für Dosen, die heute bereits als genommen markiert wurden",
+      "repeatReminders": "Wiederholte Erinnerungen für verpasste Dosen",
+      "repeatRemindersTooltip": "Sende automatisch wiederholte Erinnerungen für Dosen, die noch nicht als genommen markiert wurden",
+      "reminderInterval": "Erinnerungsintervall (Minuten)",
+      "reminderIntervalTooltip": "Wie oft wiederholte Erinnerungen für verpasste Dosen gesendet werden sollen",
+      "maxNaggingReminders": "Max. Erinnerungen pro Dosis",
+      "maxNaggingRemindersTooltip": "Wiederholungserinnerungen nach dieser Anzahl Versuchen stoppen (1-20)"
     },
     "email": {
       "recipient": "Empfänger",
@@ -340,5 +348,27 @@
       "contact": "Bitte kontaktiere {{username}} um einen neuen Link anzufordern.",
       "expiredOn": "Abgelaufen am: {{date}}"
     }
+  },
+  "exportImport": {
+    "title": "Daten Export / Import",
+    "description": "Exportiere deine Daten zur Sicherung oder Übertragung auf ein anderes Gerät. Import ersetzt ALLE deine bestehenden Daten.",
+    "export": "Daten exportieren",
+    "exporting": "Exportiere...",
+    "import": "Daten importieren",
+    "importing": "Importiere...",
+    "selectFile": "Datei auswählen",
+    "includeSensitive": "Sensible Daten einschließen",
+    "sensitiveWarning": "Warnung: Dies fügt Benachrichtigungs-URLs (können Passwörter enthalten) im Klartext in die Exportdatei ein.",
+    "confirmImport": "Alle Daten ersetzen?",
+    "confirmImportMessage": "Dies löscht dauerhaft alle deine aktuellen Medikamente, Einnahmehistorie, Einstellungen und Teilen-Links und ersetzt sie durch die importierten Daten.",
+    "confirmImportWarning": "Diese Aktion kann nicht rückgängig gemacht werden!",
+    "confirmButton": "Ja, alles ersetzen",
+    "cancelButton": "Abbrechen",
+    "exportSuccess": "Daten erfolgreich exportiert",
+    "importSuccess": "Daten erfolgreich importiert",
+    "importSuccessDetails": "Importiert: {{medications}} Medikamente, {{doses}} Dosen, {{shares}} Teilen-Links",
+    "importError": "Daten konnten nicht importiert werden",
+    "invalidFile": "Ungültiges Dateiformat. Bitte wähle eine gültige MedAssist-Exportdatei.",
+    "downloadFilename": "medassist-export"
   }
 }

frontend/src/i18n/en.json

@@ -159,7 +159,15 @@
       "push": "Push",
       "stockReminders": "Stock Reminders",
       "intakeReminders": "Intake Reminders",
-      "enableHint": "Enable at least one channel below to receive notifications."
+      "enableHint": "Enable at least one channel below to receive notifications.",
+      "skipTakenDoses": "Skip reminders for taken doses",
+      "skipTakenDosesTooltip": "Don't send intake reminders for doses that have already been marked as taken today",
+      "repeatReminders": "Repeat reminders for missed doses",
+      "repeatRemindersTooltip": "Automatically send repeated reminders for doses that haven't been marked as taken",
+      "reminderInterval": "Reminder interval (minutes)",
+      "reminderIntervalTooltip": "How often to send repeated reminders for missed doses",
+      "maxNaggingReminders": "Max reminders per dose",
+      "maxNaggingRemindersTooltip": "Stop sending repeat reminders after this many attempts (1-20)"
     },
     "email": {
       "recipient": "Recipient",
@@ -342,5 +350,27 @@
       "contact": "Please contact {{username}} to request a new link.",
       "expiredOn": "Expired on: {{date}}"
     }
+  },
+  "exportImport": {
+    "title": "Data Export / Import",
+    "description": "Export your data for backup or transfer to another device. Import will replace ALL your existing data.",
+    "export": "Export Data",
+    "exporting": "Exporting...",
+    "import": "Import Data",
+    "importing": "Importing...",
+    "selectFile": "Select File",
+    "includeSensitive": "Include sensitive data",
+    "sensitiveWarning": "Warning: This will include notification URLs (may contain passwords) in plain text in the export file.",
+    "confirmImport": "Replace All Data?",
+    "confirmImportMessage": "This will permanently delete all your current medications, dose history, settings, and share links, then replace them with the imported data.",
+    "confirmImportWarning": "This action cannot be undone!",
+    "confirmButton": "Yes, Replace All",
+    "cancelButton": "Cancel",
+    "exportSuccess": "Data exported successfully",
+    "importSuccess": "Data imported successfully",
+    "importSuccessDetails": "Imported: {{medications}} medications, {{doses}} doses, {{shares}} share links",
+    "importError": "Failed to import data",
+    "invalidFile": "Invalid file format. Please select a valid MedAssist export file.",
+    "downloadFilename": "medassist-export"
   }
 }

scripts/release.sh

@@ -18,9 +18,6 @@ YELLOW='\033[1;33m'
 BLUE='\033[0;34m'
 NC='\033[0m' # No Color
 
-# Secondary remote (self-hosted git)
-SECONDARY_REMOTE="git@git.danielvolz.org:daniel/medassist-ng.git"
-
 # Get script directory and project root
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
@@ -103,17 +100,6 @@ echo -e "${BLUE}Pushing to origin (GitHub)...${NC}"
 git push origin main
 git push origin "v${NEW_VERSION}"
 
-# Ask about secondary remote
-echo ""
-read -p "Also push to git.danielvolz.org? (y/N) " -n 1 -r
-echo ""
-if [[ $REPLY =~ ^[Yy]$ ]]; then
-    echo -e "${BLUE}Pushing to git.danielvolz.org...${NC}"
-    git push "$SECONDARY_REMOTE" main
-    git push "$SECONDARY_REMOTE" "v${NEW_VERSION}"
-    echo -e "${GREEN}✓ Pushed to git.danielvolz.org${NC}"
-fi
-
 echo ""
 echo -e "${GREEN}✓ Released v${NEW_VERSION}${NC}"
 echo -e "${BLUE}GitHub Actions will now build and publish Docker images.${NC}"