fill_rate accessor returned decimal (0.33) instead of percentage (33),
causing progress bars to display at ~1% width. DevSeeder hard-coded
status='full' on EHBO za_dag despite only 1/4 slots filled, and factory
assignments now respect slots_open_for_claiming. Added post-assignment
status auto-correction based on actual fill counts.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Implements the complete ShiftAssignment lifecycle:
- ShiftAssignmentStatus enum with allowed transitions
- ShiftAssignmentService with claim/assign/approve/reject/cancel/bulkApprove
- ShiftAssignmentController with event-scoped endpoints
- ShiftAssignmentPolicy (organizer + volunteer self-cancel)
- VolunteerAvailability model, controller, and sync endpoint
- Refactored ShiftController to delegate to service layer
- 31 workflow tests covering all paths and multi-tenancy
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
