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/Feature/ApplicationTest.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests\Feature;
+
 // Simple test to check if Laravel application is working
 use Tests\TestCase;
 

tests/Feature/Controllers/AppControllerTest.php

@@ -1,7 +1,10 @@
 <?php
 
+namespace Tests\Feature\Controllers;
+
 use App\Http\Controllers\AppController;
 use Illuminate\Support\Facades\Config;
+use ReflectionClass;
 use Tests\TestCase;
 
 class AppControllerTest extends TestCase

tests/Feature/Controllers/WebhookControllerTest.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests\Feature\Controllers;
+
 use App\Http\Controllers\WebhookController;
 use Illuminate\Support\Facades\Config;
 use Illuminate\Support\Facades\Http;

tests/Feature/ExampleTest.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests\Feature;
+
 use Tests\TestCase;
 use Tests\Concerns\LoadsApplicationData;
 

tests/Feature/Filament/ResourcesTest.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests\Feature\Filament;
+
 use App\Filament\Resources\BlogResource;
 use App\Filament\Resources\BlogResource\Pages\CreateBlog;
 use App\Filament\Resources\PlanResource;

tests/Feature/Filament/UserResourceTest.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests\Feature\Filament;
+
 use App\Filament\Resources\UserResource;
 use App\Filament\Resources\UserResource\Pages\CreateUser;
 use App\Filament\Resources\UserResource\Pages\EditUser;

tests/Feature/Livewire/Auth/LoginTest.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests\Feature\Livewire\Auth;
+
 use App\Livewire\Auth\Login;
 use App\Models\User;
 use Illuminate\Auth\Events\Lockout;

tests/Feature/Livewire/Auth/RegisterTest.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests\Feature\Livewire\Auth;
+
 use App\Livewire\Auth\Register;
 use App\Models\User;
 use Illuminate\Auth\Events\Registered;

tests/Feature/Livewire/DashboardTest.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests\Feature\Livewire;
+
 use App\Models\Plan;
 use App\Models\User;
 use Illuminate\Support\Facades\Auth;

tests/Feature/Livewire/FrontendTest.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests\Feature\Livewire;
+
 use App\Models\Email;
 use App\Models\ZEmail;
 use Illuminate\Support\Facades\Cookie;