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/CompanyController.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\StoreCompanyRequest;
+use App\Http\Requests\Api\V1\UpdateCompanyRequest;
+use App\Http\Resources\Api\V1\CompanyResource;
+use App\Models\Company;
+use App\Models\Organisation;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Resources\Json\AnonymousResourceCollection;
+use Illuminate\Support\Facades\Gate;
+
+final class CompanyController extends Controller
+{
+    public function index(Organisation $organisation): AnonymousResourceCollection
+    {
+        Gate::authorize('viewAny', [Company::class, $organisation]);
+
+        $companies = $organisation->companies()->get();
+
+        return CompanyResource::collection($companies);
+    }
+
+    public function store(StoreCompanyRequest $request, Organisation $organisation): JsonResponse
+    {
+        Gate::authorize('create', [Company::class, $organisation]);
+
+        $company = $organisation->companies()->create($request->validated());
+
+        return $this->created(new CompanyResource($company));
+    }
+
+    public function update(UpdateCompanyRequest $request, Organisation $organisation, Company $company): JsonResponse
+    {
+        Gate::authorize('update', [$company, $organisation]);
+
+        $company->update($request->validated());
+
+        return $this->success(new CompanyResource($company->fresh()));
+    }
+
+    public function destroy(Organisation $organisation, Company $company): JsonResponse
+    {
+        Gate::authorize('delete', [$company, $organisation]);
+
+        $company->delete();
+
+        return response()->json(null, 204);
+    }
+}