feat: add admin seeder and is_admin factory state

Runs is_admin migration, adds AdminSeeder for the admin user, registers
it in DatabaseSeeder, adds admin() factory state to UserFactory, and
adds AdminAccessTest covering both forbidden and ok cases.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

database/factories/UserFactory.php

@@ -57,4 +57,12 @@ class UserFactory extends Factory
             'two_factor_confirmed_at' => now(),
         ]);
     }
+
+    /**
+     * Indicate that the user is an admin.
+     */
+    public function admin(): static
+    {
+        return $this->state(['is_admin' => true]);
+    }
 }

database/seeders/AdminSeeder.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Database\Seeders;
+
+use App\Models\User;
+use Illuminate\Database\Seeder;
+use Illuminate\Support\Facades\Hash;
+
+class AdminSeeder extends Seeder
+{
+    public function run(): void
+    {
+        User::updateOrCreate(
+            ['email' => 'uovidiu@sent.com'],
+            [
+                'name' => 'Ovidiu U',
+                'password' => Hash::make('changeme'),
+                'is_admin' => true,
+            ]
+        );
+    }
+}

database/seeders/DatabaseSeeder.php

@@ -13,7 +13,7 @@ class DatabaseSeeder extends Seeder
      */
     public function run(): void
     {
-        // User::factory(10)->create();
+        $this->call(AdminSeeder::class);
 
         User::factory()->create([
             'name' => 'Test User',

tests/Feature/Admin/AdminAccessTest.php

@@ -0,0 +1,20 @@
+<?php
+
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+
+uses(RefreshDatabase::class);
+
+it('denies non-admin users access to admin panel', function () {
+    $user = User::factory()->create();
+    $this->actingAs($user);
+
+    $this->get('/admin')->assertForbidden();
+});
+
+it('allows admin users to access admin panel', function () {
+    $user = User::factory()->admin()->create();
+    $this->actingAs($user);
+
+    $this->get('/admin')->assertOk();
+});