- 🏗️ Introduced CoursePolicy and CourseEventPolicy for authorization.

- ✨ Added `StoreCourseRequest` and `UpdateCourseRequest` for structured validation.
- ✨ Introduced `StoreCourseEventRequest` and `UpdateCourseEventRequest` for consistent request validation.
- 🖼️ Created `CourseResource` and `CourseEventResource` for API responses.
- 🔄 Refactored `CourseController` and `CourseEventController` to use Policies and FormRequests.
- ✨ Added dedicated `uploadLogo` and `uploadAvatar` API endpoints with shared media validation.
- 🚀 Improved API by aligning Course and CourseEvent behavior with other entities.

app/Http/Requests/Api/UpdateCourseEventRequest.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Http\Requests\Api;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateCourseEventRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return $this->user()->can('update', $this->route('courseEvent'));
+    }
+
+    /**
+     * @return array<string, array<int, string>>
+     */
+    public function rules(): array
+    {
+        return [
+            'course_id' => ['sometimes', 'required', 'integer', 'exists:courses,id'],
+            'venue_id' => ['sometimes', 'required', 'integer', 'exists:venues,id'],
+            'from' => ['sometimes', 'required', 'date'],
+            'to' => ['sometimes', 'required', 'date', 'after_or_equal:from'],
+            'link' => ['sometimes', 'required', 'url', 'max:255'],
+        ];
+    }
+
+    /**
+     * @return array<string, string>
+     */
+    public function messages(): array
+    {
+        return [
+            'course_id.exists' => 'Der angegebene Kurs existiert nicht.',
+            'venue_id.exists' => 'Der angegebene Veranstaltungsort existiert nicht.',
+        ];
+    }
+}