Replace the Care tab with a new Today View dashboard that shows
overdue and today's care tasks grouped by room. Features include:
- TodayView: Main dashboard with greeting, progress stats, and task sections
- TodayViewModel: Room-based task grouping with completion tracking
- QuickStatsBar: Progress indicator showing completed vs total tasks
- TaskSection: Collapsible sections for overdue/today tasks
- RoomTaskGroup: Tasks grouped by room with "Water all" bulk action
- InMemoryRoomRepository: In-memory room storage for testing/mocks
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>