feat: frontend improvements - shared schedule, bottle type, settings UI, planner notifications (#146)

- Rewrite SharedSchedule to match DashboardPage rendering with time-based consumption
- Add bottle package type support across all views (MedDetail, Refill, Planner, Dashboard)
- Redesign settings page with colored threshold chips, validation, and stock reminder display
- Add shareStockStatus toggle and send manual reminder button
- Pill/pills singular/plural consistency across all views
- Planner send notification via push (Shoutrrr) in addition to email
- Stock overflow warning and past-missed day styling
- Update README: bottles in Smart Inventory, push in Trip Planner, new ENV section
- 708 passing frontend tests including new coverage for all changes

README.md

@@ -120,7 +120,7 @@ Share your medication schedule with others via a public link.
 </details>
 
 ### Smart Inventory
-- Track exact stock: packs, blisters, and loose pills
+- Track exact stock: packs, blisters, bottles, and loose pills
 - Display remaining days of supply
 - Automatic calculation based on intake schedule
 
@@ -141,6 +141,7 @@ Share your medication schedule with others via a public link.
 ### Trip Planner
 - Calculate how many pills you need for a trip or date range
 - Plan ahead for vacations, business trips, or hospital stays
+- Send demand reports via email or push notification
 
 ### Multi-Person Support
 - Manage medications for multiple people
@@ -254,6 +255,14 @@ Configure push notifications in Settings → Push, or set defaults via environme
 | `DEFAULT_SHOUTRRR_STOCK_REMINDERS` | `true` | Send stock warnings via push |
 | `DEFAULT_SHOUTRRR_INTAKE_REMINDERS` | `true` | Send intake reminders via push |
 
+### Default User Settings
+
+These defaults are applied when a new user is created. Once a user saves settings in the app, their values take precedence.
+
+| Variable | Default | Description |
+|----------|---------|-------------|
+| `DEFAULT_SHARE_STOCK_STATUS` | `true` | Show stock status (Normal/Low/Critical) on shared schedule links |
+
 #### URL Examples
 
 **ntfy** (free, self-hostable):