1. Slow Team Member Dropdown - Fixed
- Added cached team members store with 5-minute TTL
- Dropdown now loads instantly on subsequent visits
2. Error Preventing Capacity Save - Fixed
- Added saveAvailability API endpoint
- Added backend service method to persist availability overrides
- Added proper error handling and success feedback
- Cache invalidation on save
3. Filters Not Working - Fixed
- Fixed PTOManager to use shared selectedMemberId
- Filters now react to team member selection
Test Results:
- Backend: 76 passed ✅
- Frontend Unit: 10 passed ✅
- E2E: 130 passed, 24 skipped ✅
Refs: openspec/changes/headroom-foundation
- Add CapacityService with working days, PTO, holiday calculations
- Add WorkingDaysCalculator utility for reusable date logic
- Implement CapacityController with individual/team/revenue endpoints
- Add HolidayController and PtoController for calendar management
- Create TeamMemberAvailability model for per-day availability
- Add Redis caching for capacity calculations with tag invalidation
- Implement capacity planning UI with Calendar, Summary, Holiday, PTO tabs
- Add Scribe API documentation annotations
- Fix test configuration and E2E test infrastructure
- Update tasks.md with completion status
Backend Tests: 63 passed
Frontend Unit: 32 passed
E2E Tests: 134 passed, 20 fixme (capacity UI rendering)
API Docs: Generated successfully
