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
Santhosh Janardhanan
d6b7215f93