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/Requests/Api/V1/UpdatePersonRequest.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Requests\Api\V1;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+final class UpdatePersonRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /** @return array<string, mixed> */
+    public function rules(): array
+    {
+        return [
+            'crowd_type_id' => ['sometimes', 'ulid', 'exists:crowd_types,id'],
+            'name' => ['sometimes', 'string', 'max:255'],
+            'email' => ['sometimes', 'email', 'max:255'],
+            'phone' => ['nullable', 'string', 'max:30'],
+            'company_id' => ['nullable', 'ulid', 'exists:companies,id'],
+            'status' => ['sometimes', 'in:invited,applied,pending,approved,rejected,no_show'],
+            'is_blacklisted' => ['sometimes', 'boolean'],
+            'admin_notes' => ['nullable', 'string'],
+            'custom_fields' => ['nullable', 'array'],
+        ];
+    }
+}