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/Policies/CategoryPolicy.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\Category;
+use App\Models\User;
+use Illuminate\Database\Eloquent\Model;
+
+class CategoryPolicy extends ResourcePolicy
+{
+    protected function resource(): string
+    {
+        return 'categories';
+    }
+
+    /**
+     * A category still holding pages cannot be deleted; the pages would be
+     * silently orphaned. Empty it first.
+     *
+     * @param  Category|Model  $model
+     */
+    public function delete(User $user, Model $model): bool
+    {
+        return parent::delete($user, $model) && ! $model->pages()->exists();
+    }
+}