fix: resolve PSR-4 autoloading and test failures

- Add proper Tests\ namespace to all test classes in tests/Feature and tests/Unit
  - Split RemainingModelsTest.php into separate files (PSR-4 compliance)
  - Create missing factories: MetaFactory, RemoteEmailFactory
  - Add HasFactory trait to RemoteEmail model
  - Add missing ReflectionClass imports to test files
  - Fix mass assignment issues in Meta and RemoteEmail models
  - Override database connection for RemoteEmail in testing environment
  - Fix DateTime comparison precision issues in tests

tests/Unit/Models/MenuTest.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace Tests\Unit\Models;
+
+use App\Models\Menu;
+use Tests\TestCase;
+
+class MenuTest extends TestCase
+{
+    /** @test */
+    public function it_can_create_a_menu_with_factory()
+    {
+        $menu = Menu::factory()->create();
+
+        $this->assertInstanceOf(Menu::class, $menu);
+        $this->assertIsString($menu->name);
+        $this->assertIsString($menu->url);
+    }
+
+    /** @test */
+    public function it_has_correct_fillable_attributes()
+    {
+        $menuData = [
+            'name' => 'Home',
+            'url' => '/home',
+            'new_tab' => false,
+            'parent' => null,
+        ];
+
+        $menu = Menu::create($menuData);
+
+        foreach ($menuData as $key => $value) {
+            $this->assertEquals($value, $menu->$key);
+        }
+    }
+
+    /** @test */
+    public function it_orders_menus_by_name()
+    {
+        $menu1 = Menu::factory()->create(['name' => 'Zebra']);
+        $menu2 = Menu::factory()->create(['name' => 'Alpha']);
+        $menu3 = Menu::factory()->create(['name' => 'Beta']);
+
+        $menus = Menu::orderBy('name')->get();
+
+        $this->assertEquals($menu2->id, $menus[0]->id);
+        $this->assertEquals($menu3->id, $menus[1]->id);
+        $this->assertEquals($menu1->id, $menus[2]->id);
+    }
+
+    /** @test */
+    public function it_can_handle_parent_child_relationships()
+    {
+        $parentMenu = Menu::factory()->create(['parent' => null]);
+        $childMenu = Menu::factory()->create(['parent' => 'home']);
+
+        $this->assertEquals('home', $childMenu->parent);
+    }
+}