Initial commit: Pireon Admin — headless admin panel and public API

Laravel 13 + Filament 5 admin panel and REST API for a non-profit developer
collective, backed by the Pireon OAuth identity server. The public site is a
separate, server-rendered application consuming /api/public/v1.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

app/Http/Requests/Api/V1/CategoryRequest.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Requests\Api\V1;
+
+use App\Models\Category;
+use App\Rules\Translatable;
+use App\Rules\UniqueTranslatedSlug;
+use Illuminate\Foundation\Http\FormRequest;
+
+class CategoryRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        $category = $this->route('category');
+        $creating = ! $category instanceof Category;
+        $sometimes = $creating ? 'required' : 'sometimes';
+
+        return [
+            'name' => [$sometimes, new Translatable(requireDefaultLocale: $creating, max: 255)],
+            'slug' => [
+                $sometimes,
+                new Translatable(requireDefaultLocale: $creating, max: 255),
+                new UniqueTranslatedSlug(Category::class, $category?->id),
+            ],
+            'description' => ['sometimes', 'nullable', new Translatable(max: 1000)],
+
+            'color' => ['sometimes', 'nullable', 'string', 'regex:/^#[0-9a-fA-F]{6}$/'],
+            'position' => ['sometimes', 'integer', 'min:0'],
+            'is_visible' => ['sometimes', 'boolean'],
+        ];
+    }
+}