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/PageTest.php

@@ -0,0 +1,62 @@
+<?php
+
+namespace Tests\Unit\Models;
+
+use App\Models\Page;
+use Tests\TestCase;
+
+class PageTest extends TestCase
+{
+    /** @test */
+    public function it_can_create_a_page_with_factory()
+    {
+        $page = Page::factory()->create();
+
+        $this->assertInstanceOf(Page::class, $page);
+        $this->assertIsString($page->title);
+        $this->assertIsString($page->slug);
+    }
+
+    /** @test */
+    public function it_has_correct_fillable_attributes()
+    {
+        $pageData = [
+            'title' => 'About Us',
+            'slug' => 'about-us',
+            'content' => 'About us page content',
+            'meta' => [
+                'description' => 'About us meta description',
+                'keywords' => 'about,company',
+            ],
+            'is_published' => true,
+        ];
+
+        $page = Page::create($pageData);
+
+        foreach ($pageData as $key => $value) {
+            $this->assertEquals($value, $page->$key);
+        }
+    }
+
+    /** @test */
+    public function it_generates_unique_slugs()
+    {
+        $page1 = Page::factory()->create(['title' => 'Same Title']);
+        $page2 = Page::factory()->create(['title' => 'Same Title']);
+
+        $this->assertNotEquals($page1->slug, $page2->slug);
+    }
+
+    /** @test */
+    public function it_can_query_published_pages()
+    {
+        $publishedPage = Page::factory()->create(['is_published' => true]);
+        $draftPage = Page::factory()->create(['is_published' => false]);
+
+        $publishedPages = Page::where('is_published', true)->get();
+        $draftPages = Page::where('is_published', false)->get();
+
+        $this->assertCount(1, $publishedPages);
+        $this->assertCount(1, $draftPages);
+    }
+}