feat: fase 2 backend — crowd types, persons, sections, shifts, invite flow

- Crowd Types + Persons CRUD (73 tests)
- Festival Sections + Time Slots + Shifts CRUD met assign/claim flow (84 tests)
- Invite Flow + Member Management met InvitationService (109 tests)
- Schema v1.6 migraties volledig uitgevoerd
- DevSeeder bijgewerkt met crowd types voor testorganisatie

api/app/Http/Controllers/Api/V1/TimeSlotController.php

@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers\Api\V1;
+
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Api\V1\StoreTimeSlotRequest;
+use App\Http\Requests\Api\V1\UpdateTimeSlotRequest;
+use App\Http\Resources\Api\V1\TimeSlotResource;
+use App\Models\Event;
+use App\Models\TimeSlot;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Resources\Json\AnonymousResourceCollection;
+use Illuminate\Support\Facades\Gate;
+
+final class TimeSlotController extends Controller
+{
+    public function index(Event $event): AnonymousResourceCollection
+    {
+        Gate::authorize('viewAny', [TimeSlot::class, $event]);
+
+        $timeSlots = $event->timeSlots()->orderBy('date')->orderBy('start_time')->get();
+
+        return TimeSlotResource::collection($timeSlots);
+    }
+
+    public function store(StoreTimeSlotRequest $request, Event $event): JsonResponse
+    {
+        Gate::authorize('create', [TimeSlot::class, $event]);
+
+        $timeSlot = $event->timeSlots()->create($request->validated());
+
+        return $this->created(new TimeSlotResource($timeSlot));
+    }
+
+    public function update(UpdateTimeSlotRequest $request, Event $event, TimeSlot $timeSlot): JsonResponse
+    {
+        Gate::authorize('update', [$timeSlot, $event]);
+
+        $timeSlot->update($request->validated());
+
+        return $this->success(new TimeSlotResource($timeSlot->fresh()));
+    }
+
+    public function destroy(Event $event, TimeSlot $timeSlot): JsonResponse
+    {
+        Gate::authorize('delete', [$timeSlot, $event]);
+
+        $timeSlot->delete();
+
+        return response()->json(null, 204);
+    }
+}