The time slot dropdown in the shift edit dialog could flash the
"create a time slot first" alert during loading, and show raw ULIDs
when time slot data hadn't loaded yet. Fixed by:
- Adding loading state indicator to the time slot dropdown
- Using the shift's existing time_slot object as a fallback item
while the full list is fetching
- Showing the dropdown (with loading spinner) instead of the
misleading "no time slots" alert during fetch
Added test coverage for time_slot_id validation on shift updates:
- Update with valid same-event time slot (200)
- Update with cross-org time slot (422)
- Update on sub-event with parent festival time slot (200)
- Store/update responses include nested time_slot object
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
bert.hausmans
cf02500453