feat: local sections in sub-events can use festival-level time slots

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/app/src/composables/api/useTimeSlots.ts

@@ -13,12 +13,16 @@ interface PaginatedResponse<T> {
   data: T[]
 }
 
-export function useTimeSlotList(eventId: Ref<string>) {
+export function useTimeSlotList(eventId: Ref<string>, options?: { includeParent?: Ref<boolean> }) {
+  const includeParent = options?.includeParent
+
   return useQuery({
-    queryKey: ['time-slots', eventId],
+    queryKey: ['time-slots', eventId, includeParent],
     queryFn: async () => {
+      const params = includeParent?.value ? { include_parent: 'true' } : {}
       const { data } = await apiClient.get<PaginatedResponse<TimeSlot>>(
         `/events/${eventId.value}/time-slots`,
+        { params },
       )
 
       return data.data