feat: Add package type support and per-intake takenBy (#89)

## Package Type Feature
- Add 'blister' and 'bottle' package types for medications
- Bottle type uses totalPills for capacity and looseTablets for current stock
- Blister type continues to use packCount/blistersPerPack/pillsPerBlister
- Add doseUnit field for flexible dosing (mg, ml, IU, etc.)
- Full UI support in medication form and detail modal

## Per-Intake TakenBy
- Move takenBy from medication level to individual intakes
- Each intake schedule can now be assigned to a different person
- Update scheduler-utils to handle per-intake takenBy
- Update SharedSchedule to filter by per-intake takenBy
- Backward compatible with existing medication data

## UI Improvements
- Add PasswordInput component with show/hide toggle
- Centralize stockThresholds in AppContext for consistent status display
- Fix SharedSchedule sync issues with per-intake takenBy
- Improve mobile editing experience

## Technical
- Add migrations 0004 and 0005 for schema changes
- Update all relevant tests (1064 tests passing)
- Maintain backward compatibility with ALTER migrations

backend/src/db/client.ts

@@ -92,6 +92,13 @@ export async function runAlterMigrations(client: Client): Promise<{ success: boo
 		// Added for more detailed reminder info display
 		`ALTER TABLE user_settings ADD COLUMN last_reminder_med_name text`,
 		`ALTER TABLE user_settings ADD COLUMN last_reminder_taken_by text`,
+		// Added for package type support (blister vs bottle)
+		`ALTER TABLE medications ADD COLUMN package_type text NOT NULL DEFAULT 'blister'`,
+		`ALTER TABLE medications ADD COLUMN total_pills integer`,
+		// Added for dose unit selection (mg, g, mcg, ml, IU, etc.)
+		`ALTER TABLE medications ADD COLUMN dose_unit text DEFAULT 'mg'`,
+		// Added for intake-level takenBy: unified intakes structure
+		`ALTER TABLE medications ADD COLUMN intakes_json text NOT NULL DEFAULT '[]'`,
 	];
 
 	for (const sql of alterMigrations) {

backend/src/db/schema.ts

@@ -28,16 +28,21 @@ export const medications = sqliteTable("medications", {
 	name: text("name", { length: 100 }).notNull(),
 	genericName: text("generic_name", { length: 100 }),
 	takenByJson: text("taken_by_json").notNull().default("[]"), // JSON array of person names
+	packageType: text("package_type", { length: 20 }).notNull().default("blister"), // 'blister' or 'bottle'
 	packCount: integer("pack_count").notNull().default(1),
 	blistersPerPack: integer("blisters_per_pack").notNull().default(1),
 	pillsPerBlister: integer("pills_per_blister").notNull().default(1),
-	looseTablets: integer("loose_tablets").notNull().default(0), // TRUE loose pills (user-entered)
+	totalPills: integer("total_pills"), // For bottle type: total capacity of the container
+	looseTablets: integer("loose_tablets").notNull().default(0), // For blister: extra loose pills; for bottle: current stock
 	stockAdjustment: integer("stock_adjustment").notNull().default(0), // Hidden offset from stock corrections
 	lastStockCorrectionAt: integer("last_stock_correction_at", { mode: "timestamp" }), // When stock was last corrected - consumed doses before this don't count
 	pillWeightMg: integer("pill_weight_mg"),
-	usageJson: text("usage_json").notNull().default("[]"),
-	everyJson: text("every_json").notNull().default("[]"),
-	startJson: text("start_json").notNull().default("[]"),
+	doseUnit: text("dose_unit", { length: 20 }).default("mg"), // Unit for the dose (mg, g, mcg, ml, IU, etc.)
+	usageJson: text("usage_json").notNull().default("[]"), // DEPRECATED: Use intakesJson instead
+	everyJson: text("every_json").notNull().default("[]"), // DEPRECATED: Use intakesJson instead
+	startJson: text("start_json").notNull().default("[]"), // DEPRECATED: Use intakesJson instead
+	// New unified intakes structure: [{usage, every, start, takenBy, intakeRemindersEnabled}]
+	intakesJson: text("intakes_json").notNull().default("[]"),
 	imageUrl: text("image_url"),
 	expiryDate: text("expiry_date"),
 	notes: text("notes"),