diff --git a/backend/app/Http/Controllers/Api/V1/AuthController.php b/backend/app/Http/Controllers/Api/V1/AuthController.php
deleted file mode 100644
index 8f336e0..0000000
--- a/backend/app/Http/Controllers/Api/V1/AuthController.php
+++ /dev/null
@@ -1,112 +0,0 @@
-<?php
-
-namespace App\Http\Controllers\Api\V1;
-
-use App\Models\User;
-use Illuminate\Http\JsonResponse;
-use Illuminate\Http\Request;
-use Illuminate\Support\Facades\Auth;
-use Illuminate\Support\Facades\Hash;
-use Illuminate\Validation\ValidationException;
-
-class AuthController extends BaseController
-{
-    /**
-     * Login user and create token
-     */
-    public function login(Request $request): JsonResponse
-    {
-        try {
-            $request->validate([
-                'email' => 'required|email',
-                'password' => 'required',
-            ]);
-
-            $user = User::where('email', $request->email)->first();
-
-            if (!$user || !Hash::check($request->password, $user->password)) {
-                return $this->sendError('Invalid credentials', [], 401);
-            }
-
-            $token = $user->createToken('api-token')->plainTextToken;
-
-            return $this->sendResponse([
-                'user' => [
-                    'id' => $user->id,
-                    'name' => $user->name,
-                    'email' => $user->email,
-                ],
-                'token' => $token,
-                'token_type' => 'Bearer',
-            ], 'Login successful');
-        } catch (ValidationException $e) {
-            return $this->sendValidationError($e->errors());
-        } catch (\Exception $e) {
-            return $this->sendError('Login failed: ' . $e->getMessage(), [], 500);
-        }
-    }
-
-    /**
-     * Register a new user
-     */
-    public function register(Request $request): JsonResponse
-    {
-        try {
-            $validated = $request->validate([
-                'name' => 'required|string|max:255',
-                'email' => 'required|string|email|max:255|unique:users',
-                'password' => 'required|string|min:8|confirmed',
-            ]);
-
-            $user = User::create([
-                'name' => $validated['name'],
-                'email' => $validated['email'],
-                'password' => Hash::make($validated['password']),
-            ]);
-
-            $token = $user->createToken('api-token')->plainTextToken;
-
-            return $this->sendResponse([
-                'user' => [
-                    'id' => $user->id,
-                    'name' => $user->name,
-                    'email' => $user->email,
-                ],
-                'token' => $token,
-                'token_type' => 'Bearer',
-            ], 'Registration successful', 201);
-        } catch (ValidationException $e) {
-            return $this->sendValidationError($e->errors());
-        } catch (\Exception $e) {
-            return $this->sendError('Registration failed: ' . $e->getMessage(), [], 500);
-        }
-    }
-
-    /**
-     * Logout user (revoke token)
-     */
-    public function logout(Request $request): JsonResponse
-    {
-        try {
-            $request->user()->currentAccessToken()->delete();
-
-            return $this->sendResponse(null, 'Logged out successfully');
-        } catch (\Exception $e) {
-            return $this->sendError('Logout failed: ' . $e->getMessage(), [], 500);
-        }
-    }
-
-    /**
-     * Get current authenticated user
-     */
-    public function me(Request $request): JsonResponse
-    {
-        return $this->sendResponse([
-            'user' => [
-                'id' => $request->user()->id,
-                'name' => $request->user()->name,
-                'email' => $request->user()->email,
-            ],
-        ], 'User retrieved successfully');
-    }
-}
\ No newline at end of file
diff --git a/backend/app/Jobs/SyncChannelPostsJob.php b/backend/app/Jobs/SyncChannelPostsJob.php
index 5f40503..4707b83 100644
--- a/backend/app/Jobs/SyncChannelPostsJob.php
+++ b/backend/app/Jobs/SyncChannelPostsJob.php
@@ -29,8 +29,8 @@ public static function dispatchForAllActiveChannels(): void
     {
         PlatformChannel::with(['platformInstance', 'platformAccounts'])
             ->whereHas('platformInstance', fn ($query) => $query->where('platform', PlatformEnum::LEMMY))
-            ->whereHas('platformAccounts', fn ($query) => $query->where('is_active', true))
-            ->where('is_active', true)
+            ->whereHas('platformAccounts', fn ($query) => $query->where('platform_accounts.is_active', true))
+            ->where('platform_channels.is_active', true)
             ->get()
             ->each(function (PlatformChannel $channel) {
                 self::dispatch($channel);
diff --git a/backend/app/Modules/Lemmy/Services/LemmyPublisher.php b/backend/app/Modules/Lemmy/Services/LemmyPublisher.php
index 68a2651..5b153d0 100644
--- a/backend/app/Modules/Lemmy/Services/LemmyPublisher.php
+++ b/backend/app/Modules/Lemmy/Services/LemmyPublisher.php
@@ -28,7 +28,7 @@ public function __construct(PlatformAccount $account)
      */
     public function publishToChannel(Article $article, array $extractedData, PlatformChannel $channel): array
     {
-        $token = LemmyAuthService::getToken($this->account);
+        $token = resolve(LemmyAuthService::class)->getToken($this->account);
 
         // Use the language ID from extracted data (should be set during validation)
         $languageId = $extractedData['language_id'] ?? null;
@@ -37,7 +37,7 @@ public function publishToChannel(Article $article, array $extractedData, Platfor
             $token,
             $extractedData['title'] ?? 'Untitled',
             $extractedData['description'] ?? '',
-            $channel->channel_id,
+            (int) $channel->channel_id,
             $article->url,
             $extractedData['thumbnail'] ?? null,
             $languageId
diff --git a/backend/app/Services/Auth/LemmyAuthService.php b/backend/app/Services/Auth/LemmyAuthService.php
index 1ee58b2..65ed4c6 100644
--- a/backend/app/Services/Auth/LemmyAuthService.php
+++ b/backend/app/Services/Auth/LemmyAuthService.php
@@ -13,7 +13,7 @@ class LemmyAuthService
     /**
      * @throws PlatformAuthException
      */
-    public static function getToken(PlatformAccount $account): string
+    public function getToken(PlatformAccount $account): string
     {
         $cacheKey = "lemmy_jwt_token_$account->id";
         $cachedToken = Cache::get($cacheKey);
diff --git a/backend/app/Services/OnboardingRedirectService.php b/backend/app/Services/OnboardingRedirectService.php
deleted file mode 100644
index 6382fbc..0000000
--- a/backend/app/Services/OnboardingRedirectService.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-namespace App\Services;
-
-use Illuminate\Http\RedirectResponse;
-use Illuminate\Http\Request;
-
-class OnboardingRedirectService
-{
-    public static function handleRedirect(Request $request, string $defaultRoute, string $successMessage): RedirectResponse
-    {
-        $redirectTo = $request->input('redirect_to');
-        
-        if ($redirectTo) {
-            return redirect($redirectTo)->with('success', $successMessage);
-        }
-
-        return redirect()->route($defaultRoute)->with('success', $successMessage);
-    }
-}
\ No newline at end of file
diff --git a/backend/app/Services/Parsers/VrtArticlePageParser.php b/backend/app/Services/Parsers/VrtArticlePageParser.php
index 323713d..36e152d 100644
--- a/backend/app/Services/Parsers/VrtArticlePageParser.php
+++ b/backend/app/Services/Parsers/VrtArticlePageParser.php
@@ -12,7 +12,7 @@ public static function extractTitle(string $html): ?string
         }
 
         // Try h1 tag
-        if (preg_match('/<h1[^>]*>([^<]+)<\/h1>/i', $html, $matches)) {
+        if (preg_match('/<h1[^>]*>(.*?)<\/h1>/is', $html, $matches)) {
             return html_entity_decode(strip_tags($matches[1]), ENT_QUOTES, 'UTF-8');
         }
 
diff --git a/backend/app/Services/RoutingValidationService.php b/backend/app/Services/RoutingValidationService.php
index 7ddff2a..beb6520 100644
--- a/backend/app/Services/RoutingValidationService.php
+++ b/backend/app/Services/RoutingValidationService.php
@@ -24,7 +24,7 @@ public function validateLanguageCompatibility(Feed $feed, Collection $channels):
                 continue;
             }
 
-            if ($feed->language !== $channel->language) {
+            if ($feed->language->id !== $channel->language->id) {
                 throw new RoutingMismatchException($feed, $channel);
             }
         }
diff --git a/backend/routes/api.php b/backend/routes/api.php
index 4b3b990..b67b885 100644
--- a/backend/routes/api.php
+++ b/backend/routes/api.php
@@ -1,7 +1,6 @@
 <?php
 
 use App\Http\Controllers\Api\V1\ArticlesController;
-use App\Http\Controllers\Api\V1\AuthController;
 use App\Http\Controllers\Api\V1\DashboardController;
 use App\Http\Controllers\Api\V1\FeedsController;
 use App\Http\Controllers\Api\V1\LogsController;
@@ -24,17 +23,7 @@
 */
 
 Route::prefix('v1')->group(function () {
-    // Public authentication routes
-    Route::post('/auth/login', [AuthController::class, 'login'])->name('api.auth.login');
-    Route::post('/auth/register', [AuthController::class, 'register'])->name('api.auth.register');
-    
-    // Protected authentication routes
-    Route::middleware('auth:sanctum')->group(function () {
-        Route::post('/auth/logout', [AuthController::class, 'logout'])->name('api.auth.logout');
-        Route::get('/auth/me', [AuthController::class, 'me'])->name('api.auth.me');
-    });
-
-    // For demo purposes, making most endpoints public. In production, wrap in auth:sanctum middleware
+    // All endpoints are public for demo purposes
     // Route::middleware('auth:sanctum')->group(function () {
     // Dashboard stats
     Route::get('/dashboard/stats', [DashboardController::class, 'stats'])->name('api.dashboard.stats');
diff --git a/backend/tests/Feature/Http/Console/Commands/FetchNewArticlesCommandTest.php b/backend/tests/Feature/Http/Console/Commands/FetchNewArticlesCommandTest.php
index e02d822..ea6e8d6 100644
--- a/backend/tests/Feature/Http/Console/Commands/FetchNewArticlesCommandTest.php
+++ b/backend/tests/Feature/Http/Console/Commands/FetchNewArticlesCommandTest.php
@@ -15,58 +15,48 @@ class FetchNewArticlesCommandTest extends TestCase
 
     public function test_command_runs_successfully_when_feeds_exist(): void
     {
-        // Arrange
+        Queue::fake();
+
         Feed::factory()->create(['is_active' => true]);
 
-        // Act & Assert
         /** @var PendingCommand $exitCode */
         $exitCode = $this->artisan('article:refresh');
         $exitCode->assertSuccessful();
 
-        // The command should complete without the "no feeds" message
         $exitCode->assertExitCode(0);
     }
 
     public function test_command_does_not_dispatch_jobs_when_no_active_feeds_exist(): void
     {
-        // Arrange
         Queue::fake();
-        // No active feeds created
 
-        // Act
         /** @var PendingCommand $exitCode */
         $exitCode = $this->artisan('article:refresh');
 
-        // Assert
         $exitCode->assertSuccessful();
         Queue::assertNotPushed(ArticleDiscoveryJob::class);
     }
 
     public function test_command_does_not_dispatch_jobs_when_only_inactive_feeds_exist(): void
     {
-        // Arrange
         Queue::fake();
+
         Feed::factory()->create(['is_active' => false]);
 
-        // Act
         /** @var PendingCommand $exitCode */
         $exitCode = $this->artisan('article:refresh');
 
-        // Assert
         $exitCode->assertSuccessful();
         Queue::assertNotPushed(ArticleDiscoveryJob::class);
     }
 
     public function test_command_logs_when_no_feeds_available(): void
     {
-        // Arrange
         Queue::fake();
 
-        // Act
         /** @var PendingCommand $exitCode */
         $exitCode = $this->artisan('article:refresh');
 
-        // Assert
         $exitCode->assertSuccessful();
         $exitCode->expectsOutput('No active feeds found. Article discovery skipped.');
     }
diff --git a/backend/tests/Unit/Console/Commands/FetchNewArticlesCommandTest.php b/backend/tests/Unit/Console/Commands/FetchNewArticlesCommandTest.php
new file mode 100644
index 0000000..80c2a07
--- /dev/null
+++ b/backend/tests/Unit/Console/Commands/FetchNewArticlesCommandTest.php
@@ -0,0 +1,127 @@
+<?php
+
+namespace Tests\Unit\Console\Commands;
+
+use App\Console\Commands\FetchNewArticlesCommand;
+use App\Jobs\ArticleDiscoveryJob;
+use App\Models\Feed;
+use App\Models\Setting;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Queue;
+use Tests\TestCase;
+
+class FetchNewArticlesCommandTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_command_skips_when_article_processing_disabled(): void
+    {
+        Queue::fake();
+        
+        // Create a setting that disables article processing
+        Setting::factory()->create([
+            'key' => 'article_processing_enabled',
+            'value' => 'false'
+        ]);
+
+        $this->artisan('article:refresh')
+            ->expectsOutput('Article processing is disabled. Article discovery skipped.')
+            ->assertExitCode(0);
+
+        Queue::assertNotPushed(ArticleDiscoveryJob::class);
+    }
+
+    public function test_command_skips_when_no_active_feeds(): void
+    {
+        Queue::fake();
+        
+        // Enable article processing
+        Setting::factory()->create([
+            'key' => 'article_processing_enabled',
+            'value' => 'true'
+        ]);
+
+        // Ensure no active feeds exist
+        Feed::factory()->create(['is_active' => false]);
+
+        $this->artisan('article:refresh')
+            ->expectsOutput('No active feeds found. Article discovery skipped.')
+            ->assertExitCode(0);
+
+        Queue::assertNotPushed(ArticleDiscoveryJob::class);
+    }
+
+    public function test_command_dispatches_job_when_conditions_met(): void
+    {
+        Queue::fake();
+        
+        // Enable article processing
+        Setting::factory()->create([
+            'key' => 'article_processing_enabled',
+            'value' => 'true'
+        ]);
+
+        // Create at least one active feed
+        Feed::factory()->create(['is_active' => true]);
+
+        $this->artisan('article:refresh')
+            ->assertExitCode(0);
+
+        Queue::assertPushed(ArticleDiscoveryJob::class);
+    }
+
+    public function test_command_has_correct_signature(): void
+    {
+        $command = new FetchNewArticlesCommand();
+        
+        $this->assertEquals('article:refresh', $command->getName());
+    }
+
+    public function test_command_has_correct_description(): void
+    {
+        $command = new FetchNewArticlesCommand();
+        
+        $this->assertEquals('Fetches latest articles', $command->getDescription());
+    }
+
+    public function test_command_with_multiple_active_feeds_still_dispatches_once(): void
+    {
+        Queue::fake();
+        
+        // Enable article processing
+        Setting::factory()->create([
+            'key' => 'article_processing_enabled',
+            'value' => 'true'
+        ]);
+
+        // Create multiple active feeds
+        Feed::factory()->count(3)->create(['is_active' => true]);
+
+        $command = new FetchNewArticlesCommand();
+        $result = $command->handle();
+
+        $this->assertEquals(0, $result);
+        Queue::assertPushed(ArticleDiscoveryJob::class, 1);
+    }
+
+    public function test_command_ignores_inactive_feeds(): void
+    {
+        Queue::fake();
+        
+        // Enable article processing
+        Setting::factory()->create([
+            'key' => 'article_processing_enabled',
+            'value' => 'true'
+        ]);
+
+        // Create mix of active and inactive feeds, but ensure at least one active
+        Feed::factory()->create(['is_active' => true]);
+        Feed::factory()->count(2)->create(['is_active' => false]);
+
+        $command = new FetchNewArticlesCommand();
+        $result = $command->handle();
+
+        $this->assertEquals(0, $result);
+        Queue::assertPushed(ArticleDiscoveryJob::class);
+    }
+}
\ No newline at end of file
diff --git a/backend/tests/Unit/Console/Commands/SyncChannelPostsCommandTest.php b/backend/tests/Unit/Console/Commands/SyncChannelPostsCommandTest.php
new file mode 100644
index 0000000..0138e80
--- /dev/null
+++ b/backend/tests/Unit/Console/Commands/SyncChannelPostsCommandTest.php
@@ -0,0 +1,145 @@
+<?php
+
+namespace Tests\Unit\Console\Commands;
+
+use App\Console\Commands\SyncChannelPostsCommand;
+use App\Enums\PlatformEnum;
+use App\Jobs\SyncChannelPostsJob;
+use App\Models\PlatformAccount;
+use App\Models\PlatformChannel;
+use App\Models\PlatformInstance;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Queue;
+use Tests\TestCase;
+
+class SyncChannelPostsCommandTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+        Queue::fake();
+    }
+
+    private function createTestChannelData(): void
+    {
+        $instance = PlatformInstance::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'url' => 'https://lemmy.test'
+        ]);
+        
+        $account = PlatformAccount::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'is_active' => true
+        ]);
+        
+        $channel = PlatformChannel::factory()->create([
+            'platform_instance_id' => $instance->id,
+            'is_active' => true
+        ]);
+        
+        // Link the account to the channel
+        $account->channels()->attach($channel->id);
+    }
+
+    public function test_command_has_correct_signature(): void
+    {
+        $command = new SyncChannelPostsCommand();
+        
+        $this->assertEquals('channel:sync', $command->getName());
+    }
+
+    public function test_command_has_correct_description(): void
+    {
+        $command = new SyncChannelPostsCommand();
+        
+        $this->assertEquals('Manually sync channel posts for a platform', $command->getDescription());
+    }
+
+    public function test_command_syncs_lemmy_by_default(): void
+    {
+        $this->createTestChannelData();
+        
+        $this->artisan('channel:sync')
+            ->expectsOutput('Successfully dispatched sync jobs for all active Lemmy channels')
+            ->assertExitCode(0);
+
+        Queue::assertPushed(SyncChannelPostsJob::class);
+    }
+
+    public function test_command_syncs_lemmy_when_explicitly_specified(): void
+    {
+        $this->createTestChannelData();
+        
+        $this->artisan('channel:sync lemmy')
+            ->expectsOutput('Successfully dispatched sync jobs for all active Lemmy channels')
+            ->assertExitCode(0);
+
+        Queue::assertPushed(SyncChannelPostsJob::class);
+    }
+
+    public function test_command_fails_with_unsupported_platform(): void
+    {
+        $this->artisan('channel:sync twitter')
+            ->expectsOutput('Unsupported platform: twitter')
+            ->assertExitCode(1);
+
+        Queue::assertNotPushed(SyncChannelPostsJob::class);
+    }
+
+    public function test_command_fails_with_invalid_platform(): void
+    {
+        $this->artisan('channel:sync invalid')
+            ->expectsOutput('Unsupported platform: invalid')
+            ->assertExitCode(1);
+
+        Queue::assertNotPushed(SyncChannelPostsJob::class);
+    }
+
+    public function test_command_handles_empty_platform_argument(): void
+    {
+        $this->createTestChannelData();
+        
+        // When no platform is provided, it defaults to 'lemmy' per the signature
+        $this->artisan('channel:sync')
+            ->expectsOutput('Successfully dispatched sync jobs for all active Lemmy channels')
+            ->assertExitCode(0);
+
+        Queue::assertPushed(SyncChannelPostsJob::class);
+    }
+
+    public function test_sync_lemmy_returns_success_code(): void
+    {
+        $this->createTestChannelData();
+        
+        $this->artisan('channel:sync lemmy')
+            ->expectsOutput('Successfully dispatched sync jobs for all active Lemmy channels')
+            ->assertExitCode(0);
+
+        Queue::assertPushed(SyncChannelPostsJob::class);
+    }
+
+    public function test_command_signature_accepts_platform_argument(): void
+    {
+        $command = new SyncChannelPostsCommand();
+        
+        // Check that the command definition includes the platform argument
+        $definition = $command->getDefinition();
+        $this->assertTrue($definition->hasArgument('platform'));
+        
+        $platformArg = $definition->getArgument('platform');
+        $this->assertEquals('lemmy', $platformArg->getDefault());
+    }
+
+    public function test_private_sync_lemmy_method_calls_job(): void
+    {
+        $this->createTestChannelData();
+        
+        $this->artisan('channel:sync lemmy')
+            ->expectsOutput('Successfully dispatched sync jobs for all active Lemmy channels')
+            ->assertExitCode(0);
+
+        Queue::assertPushed(SyncChannelPostsJob::class);
+    }
+}
\ No newline at end of file
diff --git a/backend/tests/Unit/Exceptions/PublishExceptionTest.php b/backend/tests/Unit/Exceptions/PublishExceptionTest.php
new file mode 100644
index 0000000..e2abed0
--- /dev/null
+++ b/backend/tests/Unit/Exceptions/PublishExceptionTest.php
@@ -0,0 +1,104 @@
+<?php
+
+namespace Tests\Unit\Exceptions;
+
+use App\Enums\PlatformEnum;
+use App\Exceptions\PublishException;
+use App\Models\Article;
+use Exception;
+use Tests\TestCase;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+
+class PublishExceptionTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_get_article_returns_correct_article(): void
+    {
+        $article = Article::factory()->create(['id' => 123]);
+        
+        $exception = new PublishException($article, PlatformEnum::LEMMY);
+        
+        $this->assertSame($article, $exception->getArticle());
+        $this->assertEquals(123, $exception->getArticle()->id);
+    }
+
+    public function test_get_platform_returns_correct_platform(): void
+    {
+        $article = Article::factory()->create();
+        
+        $exception = new PublishException($article, PlatformEnum::LEMMY);
+        
+        $this->assertSame(PlatformEnum::LEMMY, $exception->getPlatform());
+    }
+
+    public function test_get_platform_returns_null_when_no_platform(): void
+    {
+        $article = Article::factory()->create();
+        
+        $exception = new PublishException($article, null);
+        
+        $this->assertNull($exception->getPlatform());
+    }
+
+    public function test_constructor_creates_message_with_article_id_and_platform(): void
+    {
+        $article = Article::factory()->create(['id' => 456]);
+        
+        $exception = new PublishException($article, PlatformEnum::LEMMY);
+        
+        $this->assertEquals('Failed to publish article #456  to lemmy', $exception->getMessage());
+    }
+
+    public function test_constructor_creates_message_with_article_id_only(): void
+    {
+        $article = Article::factory()->create(['id' => 789]);
+        
+        $exception = new PublishException($article, null);
+        
+        $this->assertEquals('Failed to publish article #789', $exception->getMessage());
+    }
+
+    public function test_constructor_includes_previous_exception_message(): void
+    {
+        $article = Article::factory()->create(['id' => 321]);
+        $previousException = new Exception('Original error message');
+        
+        $exception = new PublishException($article, PlatformEnum::LEMMY, $previousException);
+        
+        $this->assertEquals('Failed to publish article #321  to lemmy: Original error message', $exception->getMessage());
+        $this->assertSame($previousException, $exception->getPrevious());
+    }
+
+    public function test_constructor_includes_previous_exception_message_without_platform(): void
+    {
+        $article = Article::factory()->create(['id' => 654]);
+        $previousException = new Exception('Another error');
+        
+        $exception = new PublishException($article, null, $previousException);
+        
+        $this->assertEquals('Failed to publish article #654: Another error', $exception->getMessage());
+        $this->assertSame($previousException, $exception->getPrevious());
+    }
+
+    public function test_exception_properties_are_immutable(): void
+    {
+        $article = Article::factory()->create();
+        
+        $exception = new PublishException($article, PlatformEnum::LEMMY);
+        
+        // These methods should return the same instances every time
+        $this->assertSame($exception->getArticle(), $exception->getArticle());
+        $this->assertSame($exception->getPlatform(), $exception->getPlatform());
+    }
+
+    public function test_works_with_different_platform_enum_values(): void
+    {
+        $article = Article::factory()->create();
+        
+        // Test with different platform values (if more are available)
+        $exception = new PublishException($article, PlatformEnum::LEMMY);
+        $this->assertSame(PlatformEnum::LEMMY, $exception->getPlatform());
+        $this->assertStringContainsString('lemmy', $exception->getMessage());
+    }
+}
\ No newline at end of file
diff --git a/backend/tests/Unit/Modules/Lemmy/LemmyRequestTest.php b/backend/tests/Unit/Modules/Lemmy/LemmyRequestTest.php
new file mode 100644
index 0000000..07aaff4
--- /dev/null
+++ b/backend/tests/Unit/Modules/Lemmy/LemmyRequestTest.php
@@ -0,0 +1,173 @@
+<?php
+
+namespace Tests\Unit\Modules\Lemmy;
+
+use App\Modules\Lemmy\LemmyRequest;
+use Illuminate\Http\Client\Response;
+use Illuminate\Support\Facades\Http;
+use Tests\TestCase;
+
+class LemmyRequestTest extends TestCase
+{
+    public function test_constructor_sets_instance_and_token(): void
+    {
+        $instance = 'lemmy.test';
+        $token = 'test-token';
+        
+        $request = new LemmyRequest($instance, $token);
+        
+        $this->assertInstanceOf(LemmyRequest::class, $request);
+    }
+
+    public function test_constructor_sets_instance_without_token(): void
+    {
+        $instance = 'lemmy.test';
+        
+        $request = new LemmyRequest($instance);
+        
+        $this->assertInstanceOf(LemmyRequest::class, $request);
+    }
+
+    public function test_get_makes_request_without_token(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/test' => Http::response(['success' => true], 200)
+        ]);
+
+        $request = new LemmyRequest('lemmy.test');
+        $response = $request->get('test');
+
+        $this->assertInstanceOf(Response::class, $response);
+        $this->assertTrue($response->successful());
+        
+        Http::assertSent(function ($request) {
+            return $request->url() === 'https://lemmy.test/api/v3/test' &&
+                   !$request->hasHeader('Authorization');
+        });
+    }
+
+    public function test_get_makes_request_with_token(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/test' => Http::response(['success' => true], 200)
+        ]);
+
+        $request = new LemmyRequest('lemmy.test', 'test-token');
+        $response = $request->get('test');
+
+        $this->assertInstanceOf(Response::class, $response);
+        $this->assertTrue($response->successful());
+        
+        Http::assertSent(function ($request) {
+            return $request->url() === 'https://lemmy.test/api/v3/test' &&
+                   $request->hasHeader('Authorization', 'Bearer test-token');
+        });
+    }
+
+    public function test_get_includes_parameters(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/test*' => Http::response(['success' => true], 200)
+        ]);
+
+        $request = new LemmyRequest('lemmy.test');
+        $params = ['param1' => 'value1', 'param2' => 'value2'];
+        $response = $request->get('test', $params);
+
+        $this->assertTrue($response->successful());
+        
+        Http::assertSent(function ($request) use ($params) {
+            $query = parse_url($request->url(), PHP_URL_QUERY);
+            parse_str($query, $queryParams);
+            return $queryParams === $params;
+        });
+    }
+
+    public function test_post_makes_request_without_token(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/test' => Http::response(['success' => true], 200)
+        ]);
+
+        $request = new LemmyRequest('lemmy.test');
+        $response = $request->post('test');
+
+        $this->assertInstanceOf(Response::class, $response);
+        $this->assertTrue($response->successful());
+        
+        Http::assertSent(function ($request) {
+            return $request->url() === 'https://lemmy.test/api/v3/test' &&
+                   $request->method() === 'POST' &&
+                   !$request->hasHeader('Authorization');
+        });
+    }
+
+    public function test_post_makes_request_with_token(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/test' => Http::response(['success' => true], 200)
+        ]);
+
+        $request = new LemmyRequest('lemmy.test', 'test-token');
+        $response = $request->post('test');
+
+        $this->assertTrue($response->successful());
+        
+        Http::assertSent(function ($request) {
+            return $request->url() === 'https://lemmy.test/api/v3/test' &&
+                   $request->method() === 'POST' &&
+                   $request->hasHeader('Authorization', 'Bearer test-token');
+        });
+    }
+
+    public function test_post_includes_data(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/test' => Http::response(['success' => true], 200)
+        ]);
+
+        $request = new LemmyRequest('lemmy.test');
+        $data = ['field1' => 'value1', 'field2' => 'value2'];
+        $response = $request->post('test', $data);
+
+        $this->assertTrue($response->successful());
+        
+        Http::assertSent(function ($request) use ($data) {
+            return $request->data() === $data;
+        });
+    }
+
+    public function test_with_token_returns_self_and_updates_token(): void
+    {
+        $request = new LemmyRequest('lemmy.test');
+        $result = $request->withToken('new-token');
+
+        $this->assertSame($request, $result);
+        
+        // Verify token is used in subsequent requests
+        Http::fake([
+            'https://lemmy.test/api/v3/test' => Http::response(['success' => true], 200)
+        ]);
+
+        $request->get('test');
+        
+        Http::assertSent(function ($request) {
+            return $request->hasHeader('Authorization', 'Bearer new-token');
+        });
+    }
+
+    public function test_requests_have_timeout(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/test' => Http::response(['success' => true], 200)
+        ]);
+
+        $request = new LemmyRequest('lemmy.test');
+        $request->get('test');
+
+        // This tests that timeout is set - actual timeout value is implementation detail
+        Http::assertSent(function ($request) {
+            return str_contains($request->url(), 'lemmy.test');
+        });
+    }
+}
\ No newline at end of file
diff --git a/backend/tests/Unit/Modules/Lemmy/Services/LemmyApiServiceTest.php b/backend/tests/Unit/Modules/Lemmy/Services/LemmyApiServiceTest.php
new file mode 100644
index 0000000..fe74ec9
--- /dev/null
+++ b/backend/tests/Unit/Modules/Lemmy/Services/LemmyApiServiceTest.php
@@ -0,0 +1,417 @@
+<?php
+
+namespace Tests\Unit\Modules\Lemmy\Services;
+
+use App\Enums\PlatformEnum;
+use App\Models\PlatformChannelPost;
+use App\Modules\Lemmy\LemmyRequest;
+use App\Modules\Lemmy\Services\LemmyApiService;
+use Exception;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Http\Client\Response;
+use Illuminate\Support\Facades\Http;
+use Illuminate\Support\Facades\Log;
+use Mockery;
+use Tests\TestCase;
+
+class LemmyApiServiceTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function tearDown(): void
+    {
+        Mockery::close();
+        parent::tearDown();
+    }
+
+    public function test_constructor_sets_instance(): void
+    {
+        $service = new LemmyApiService('lemmy.test');
+        
+        $this->assertInstanceOf(LemmyApiService::class, $service);
+    }
+
+    public function test_login_successful(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/user/login' => Http::response([
+                'jwt' => 'test-jwt-token'
+            ], 200)
+        ]);
+
+        $service = new LemmyApiService('lemmy.test');
+        $result = $service->login('testuser', 'testpass');
+
+        $this->assertEquals('test-jwt-token', $result);
+        
+        Http::assertSent(function ($request) {
+            return $request->url() === 'https://lemmy.test/api/v3/user/login' &&
+                   $request->method() === 'POST' &&
+                   $request->data() === [
+                       'username_or_email' => 'testuser',
+                       'password' => 'testpass'
+                   ];
+        });
+    }
+
+    public function test_login_failed_response(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/user/login' => Http::response(['error' => 'Invalid credentials'], 401)
+        ]);
+
+        Log::shouldReceive('error')
+            ->once()
+            ->with('Lemmy login failed', Mockery::type('array'));
+
+        $service = new LemmyApiService('lemmy.test');
+        $result = $service->login('testuser', 'wrongpass');
+
+        $this->assertNull($result);
+    }
+
+    public function test_login_missing_jwt_in_response(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/user/login' => Http::response(['success' => true], 200)
+        ]);
+
+        $service = new LemmyApiService('lemmy.test');
+        $result = $service->login('testuser', 'testpass');
+
+        $this->assertNull($result);
+    }
+
+    public function test_login_exception_handling(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/user/login' => function () {
+                throw new Exception('Network error');
+            }
+        ]);
+
+        Log::shouldReceive('error')
+            ->once()
+            ->with('Lemmy login exception', ['error' => 'Network error']);
+
+        $service = new LemmyApiService('lemmy.test');
+        $result = $service->login('testuser', 'testpass');
+
+        $this->assertNull($result);
+    }
+
+    public function test_get_community_id_successful(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/community*' => Http::response([
+                'community_view' => [
+                    'community' => [
+                        'id' => 123
+                    ]
+                ]
+            ], 200)
+        ]);
+
+        $service = new LemmyApiService('lemmy.test');
+        $result = $service->getCommunityId('testcommunity', 'test-token');
+
+        $this->assertEquals(123, $result);
+        
+        Http::assertSent(function ($request) {
+            return str_contains($request->url(), 'community') &&
+                   $request->hasHeader('Authorization', 'Bearer test-token');
+        });
+    }
+
+    public function test_get_community_id_failed_response(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/community*' => Http::response(['error' => 'Not found'], 404)
+        ]);
+
+        Log::shouldReceive('error')
+            ->once()
+            ->with('Community lookup failed', Mockery::type('array'));
+
+        $service = new LemmyApiService('lemmy.test');
+        
+        $this->expectException(Exception::class);
+        $this->expectExceptionMessage('Failed to fetch community: 404');
+        
+        $service->getCommunityId('nonexistent', 'test-token');
+    }
+
+    public function test_get_community_id_missing_data(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/community*' => Http::response([
+                'community_view' => ['community' => []]
+            ], 200)
+        ]);
+
+        Log::shouldReceive('error')
+            ->once()
+            ->with('Community lookup failed', Mockery::type('array'));
+
+        $service = new LemmyApiService('lemmy.test');
+        
+        $this->expectException(Exception::class);
+        $this->expectExceptionMessage('Community not found');
+        
+        $service->getCommunityId('testcommunity', 'test-token');
+    }
+
+    public function test_sync_channel_posts_successful(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/post/list*' => Http::response([
+                'posts' => [
+                    [
+                        'post' => [
+                            'id' => 1,
+                            'name' => 'Test Post 1',
+                            'url' => 'https://example.com/1',
+                            'published' => '2023-01-01T00:00:00Z'
+                        ]
+                    ],
+                    [
+                        'post' => [
+                            'id' => 2,
+                            'name' => 'Test Post 2',
+                            'published' => '2023-01-02T00:00:00Z'
+                        ]
+                    ]
+                ]
+            ], 200)
+        ]);
+
+        Log::shouldReceive('info')
+            ->once()
+            ->with('Synced channel posts', [
+                'platform_channel_id' => 123,
+                'posts_count' => 2
+            ]);
+
+        $service = new LemmyApiService('lemmy.test');
+        $service->syncChannelPosts('test-token', 123, 'testcommunity');
+
+        // Verify posts were stored
+        $this->assertDatabaseCount('platform_channel_posts', 2);
+        $this->assertDatabaseHas('platform_channel_posts', [
+            'platform' => PlatformEnum::LEMMY,
+            'channel_id' => '123',
+            'post_id' => '1'
+        ]);
+    }
+
+    public function test_sync_channel_posts_failed_response(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/post/list*' => Http::response(['error' => 'Unauthorized'], 401)
+        ]);
+
+        Log::shouldReceive('warning')
+            ->once()
+            ->with('Failed to sync channel posts', [
+                'status' => 401,
+                'platform_channel_id' => 123
+            ]);
+
+        $service = new LemmyApiService('lemmy.test');
+        $service->syncChannelPosts('test-token', 123, 'testcommunity');
+
+        // Verify no posts were stored
+        $this->assertDatabaseCount('platform_channel_posts', 0);
+    }
+
+    public function test_sync_channel_posts_exception_handling(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/post/list*' => function () {
+                throw new Exception('Network error');
+            }
+        ]);
+
+        Log::shouldReceive('error')
+            ->once()
+            ->with('Exception while syncing channel posts', [
+                'error' => 'Network error',
+                'platform_channel_id' => 123
+            ]);
+
+        $service = new LemmyApiService('lemmy.test');
+        $service->syncChannelPosts('test-token', 123, 'testcommunity');
+
+        $this->assertDatabaseCount('platform_channel_posts', 0);
+    }
+
+    public function test_create_post_successful_minimal_data(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/post' => Http::response([
+                'post_view' => [
+                    'post' => [
+                        'id' => 456,
+                        'name' => 'Test Title'
+                    ]
+                ]
+            ], 200)
+        ]);
+
+        $service = new LemmyApiService('lemmy.test');
+        $result = $service->createPost('test-token', 'Test Title', 'Test Body', 123);
+
+        $this->assertIsArray($result);
+        $this->assertEquals(456, $result['post_view']['post']['id']);
+        
+        Http::assertSent(function ($request) {
+            return $request->url() === 'https://lemmy.test/api/v3/post' &&
+                   $request->method() === 'POST' &&
+                   $request->data() === [
+                       'name' => 'Test Title',
+                       'body' => 'Test Body',
+                       'community_id' => 123
+                   ];
+        });
+    }
+
+    public function test_create_post_successful_with_all_optional_data(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/post' => Http::response([
+                'post_view' => ['post' => ['id' => 456]]
+            ], 200)
+        ]);
+
+        $service = new LemmyApiService('lemmy.test');
+        $result = $service->createPost(
+            'test-token',
+            'Test Title',
+            'Test Body',
+            123,
+            'https://example.com',
+            'https://example.com/thumb.jpg',
+            2
+        );
+
+        $this->assertIsArray($result);
+        
+        Http::assertSent(function ($request) {
+            return $request->data() === [
+                'name' => 'Test Title',
+                'body' => 'Test Body',
+                'community_id' => 123,
+                'url' => 'https://example.com',
+                'custom_thumbnail' => 'https://example.com/thumb.jpg',
+                'language_id' => 2
+            ];
+        });
+    }
+
+    public function test_create_post_failed_response(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/post' => Http::response(['error' => 'Validation failed'], 400)
+        ]);
+
+        Log::shouldReceive('error')
+            ->once()
+            ->with('Post creation failed', Mockery::type('array'));
+
+        $service = new LemmyApiService('lemmy.test');
+        
+        $this->expectException(Exception::class);
+        $this->expectExceptionMessage('Failed to create post: 400');
+        
+        $service->createPost('test-token', 'Test Title', 'Test Body', 123);
+    }
+
+    public function test_create_post_exception_handling(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/post' => function () {
+                throw new Exception('Network error');
+            }
+        ]);
+
+        Log::shouldReceive('error')
+            ->once()
+            ->with('Post creation failed', ['error' => 'Network error']);
+
+        $service = new LemmyApiService('lemmy.test');
+        
+        $this->expectException(Exception::class);
+        $this->expectExceptionMessage('Network error');
+        
+        $service->createPost('test-token', 'Test Title', 'Test Body', 123);
+    }
+
+    public function test_get_languages_successful(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/site' => Http::response([
+                'all_languages' => [
+                    ['id' => 0, 'code' => 'und', 'name' => 'Undetermined'],
+                    ['id' => 1, 'code' => 'en', 'name' => 'English'],
+                    ['id' => 2, 'code' => 'es', 'name' => 'Spanish']
+                ]
+            ], 200)
+        ]);
+
+        $service = new LemmyApiService('lemmy.test');
+        $result = $service->getLanguages();
+
+        $this->assertIsArray($result);
+        $this->assertCount(3, $result);
+        $this->assertEquals('English', $result[1]['name']);
+    }
+
+    public function test_get_languages_failed_response(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/site' => Http::response(['error' => 'Server error'], 500)
+        ]);
+
+        Log::shouldReceive('warning')
+            ->once()
+            ->with('Failed to fetch site languages', ['status' => 500]);
+
+        $service = new LemmyApiService('lemmy.test');
+        $result = $service->getLanguages();
+
+        $this->assertIsArray($result);
+        $this->assertEmpty($result);
+    }
+
+    public function test_get_languages_missing_data(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/site' => Http::response(['site_view' => []], 200)
+        ]);
+
+        $service = new LemmyApiService('lemmy.test');
+        $result = $service->getLanguages();
+
+        $this->assertIsArray($result);
+        $this->assertEmpty($result);
+    }
+
+    public function test_get_languages_exception_handling(): void
+    {
+        Http::fake([
+            'https://lemmy.test/api/v3/site' => function () {
+                throw new Exception('Network error');
+            }
+        ]);
+
+        Log::shouldReceive('error')
+            ->once()
+            ->with('Exception while fetching languages', ['error' => 'Network error']);
+
+        $service = new LemmyApiService('lemmy.test');
+        $result = $service->getLanguages();
+
+        $this->assertIsArray($result);
+        $this->assertEmpty($result);
+    }
+}
\ No newline at end of file
diff --git a/backend/tests/Unit/Modules/Lemmy/Services/LemmyPublisherTest.php b/backend/tests/Unit/Modules/Lemmy/Services/LemmyPublisherTest.php
new file mode 100644
index 0000000..e02cd49
--- /dev/null
+++ b/backend/tests/Unit/Modules/Lemmy/Services/LemmyPublisherTest.php
@@ -0,0 +1,393 @@
+<?php
+
+namespace Tests\Unit\Modules\Lemmy\Services;
+
+use App\Enums\PlatformEnum;
+use App\Exceptions\PlatformAuthException;
+use App\Models\Article;
+use App\Models\PlatformAccount;
+use App\Models\PlatformChannel;
+use App\Models\PlatformInstance;
+use App\Modules\Lemmy\Services\LemmyApiService;
+use App\Modules\Lemmy\Services\LemmyPublisher;
+use App\Services\Auth\LemmyAuthService;
+use Exception;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\Http;
+use Illuminate\Support\Facades\Queue;
+use Mockery;
+use Tests\TestCase;
+
+class LemmyPublisherTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+        Queue::fake();
+        Http::fake();
+    }
+
+    protected function tearDown(): void
+    {
+        Mockery::close();
+        parent::tearDown();
+    }
+
+    public function test_constructor_creates_api_service(): void
+    {
+        $account = PlatformAccount::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'instance_url' => 'https://lemmy.test'
+        ]);
+
+        $publisher = new LemmyPublisher($account);
+        
+        $this->assertInstanceOf(LemmyPublisher::class, $publisher);
+    }
+
+    public function test_publish_to_channel_with_minimal_data(): void
+    {
+        $account = PlatformAccount::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'instance_url' => 'https://lemmy.test',
+            'username' => 'testuser',
+            'password' => 'testpass'
+        ]);
+
+        $article = Article::factory()->create([
+            'url' => 'https://example.com/article'
+        ]);
+
+        $instance = PlatformInstance::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'url' => 'https://lemmy.test'
+        ]);
+        
+        $channel = PlatformChannel::factory()->create([
+            'platform_instance_id' => $instance->id,
+            'channel_id' => 123,
+            'name' => 'testcommunity'
+        ]);
+
+        $extractedData = [
+            'title' => 'Test Article',
+            'description' => 'Test Description'
+        ];
+
+        $expectedResult = [
+            'post_view' => [
+                'post' => [
+                    'id' => 456,
+                    'name' => 'Test Article'
+                ]
+            ]
+        ];
+
+        // Mock LemmyAuthService
+        $this->mock(LemmyAuthService::class, function ($mock) use ($account) {
+            $mock->shouldReceive('getToken')
+                ->once()
+                ->with($account)
+                ->andReturn('test-jwt-token');
+        });
+
+        // Mock LemmyApiService
+        $apiServiceMock = Mockery::mock(LemmyApiService::class);
+        $apiServiceMock->shouldReceive('createPost')
+            ->once()
+            ->with(
+                'test-jwt-token',
+                'Test Article',
+                'Test Description',
+                123,
+                'https://example.com/article',
+                null,
+                null
+            )
+            ->andReturn($expectedResult);
+
+        // Use reflection to replace the api service in the publisher
+        $publisher = new LemmyPublisher($account);
+        $reflection = new \ReflectionClass($publisher);
+        $apiProperty = $reflection->getProperty('api');
+        $apiProperty->setAccessible(true);
+        $apiProperty->setValue($publisher, $apiServiceMock);
+
+        $result = $publisher->publishToChannel($article, $extractedData, $channel);
+
+        $this->assertEquals($expectedResult, $result);
+    }
+
+    public function test_publish_to_channel_with_all_optional_data(): void
+    {
+        $account = PlatformAccount::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'instance_url' => 'https://lemmy.test',
+            'username' => 'testuser',
+            'password' => 'testpass'
+        ]);
+
+        $article = Article::factory()->create([
+            'url' => 'https://example.com/article'
+        ]);
+
+        $instance = PlatformInstance::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'url' => 'https://lemmy.test'
+        ]);
+        
+        $channel = PlatformChannel::factory()->create([
+            'platform_instance_id' => $instance->id,
+            'channel_id' => 123,
+            'name' => 'testcommunity'
+        ]);
+
+        $extractedData = [
+            'title' => 'Test Article',
+            'description' => 'Test Description',
+            'thumbnail' => 'https://example.com/thumb.jpg',
+            'language_id' => 2
+        ];
+
+        $expectedResult = [
+            'post_view' => [
+                'post' => [
+                    'id' => 456,
+                    'name' => 'Test Article'
+                ]
+            ]
+        ];
+
+        // Mock LemmyAuthService
+        $this->mock(LemmyAuthService::class, function ($mock) use ($account) {
+            $mock->shouldReceive('getToken')
+                ->once()
+                ->with($account)
+                ->andReturn('test-jwt-token');
+        });
+
+        // Mock LemmyApiService
+        $apiServiceMock = Mockery::mock(LemmyApiService::class);
+        $apiServiceMock->shouldReceive('createPost')
+            ->once()
+            ->with(
+                'test-jwt-token',
+                'Test Article',
+                'Test Description',
+                123,
+                'https://example.com/article',
+                'https://example.com/thumb.jpg',
+                2
+            )
+            ->andReturn($expectedResult);
+
+        // Use reflection to replace the api service in the publisher
+        $publisher = new LemmyPublisher($account);
+        $reflection = new \ReflectionClass($publisher);
+        $apiProperty = $reflection->getProperty('api');
+        $apiProperty->setAccessible(true);
+        $apiProperty->setValue($publisher, $apiServiceMock);
+
+        $result = $publisher->publishToChannel($article, $extractedData, $channel);
+
+        $this->assertEquals($expectedResult, $result);
+    }
+
+    public function test_publish_to_channel_with_missing_title_uses_default(): void
+    {
+        $this->expectNotToPerformAssertions();
+        
+        $account = PlatformAccount::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'instance_url' => 'https://lemmy.test',
+            'username' => 'testuser',
+            'password' => 'testpass'
+        ]);
+
+        $article = Article::factory()->create([
+            'url' => 'https://example.com/article'
+        ]);
+
+        $instance = PlatformInstance::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'url' => 'https://lemmy.test'
+        ]);
+        
+        $channel = PlatformChannel::factory()->create([
+            'platform_instance_id' => $instance->id,
+            'channel_id' => 123,
+            'name' => 'testcommunity'
+        ]);
+
+        $extractedData = [
+            'description' => 'Test Description'
+        ];
+
+        // Mock LemmyAuthService
+        $this->mock(LemmyAuthService::class, function ($mock) use ($account) {
+            $mock->shouldReceive('getToken')
+                ->once()
+                ->with($account)
+                ->andReturn('test-jwt-token');
+        });
+
+        // Mock LemmyApiService
+        $apiServiceMock = Mockery::mock(LemmyApiService::class);
+        $apiServiceMock->shouldReceive('createPost')
+            ->once()
+            ->with(
+                'test-jwt-token',
+                'Untitled',
+                'Test Description',
+                123,
+                'https://example.com/article',
+                null,
+                null
+            )
+            ->andReturn([]);
+
+        // Use reflection to replace the api service in the publisher
+        $publisher = new LemmyPublisher($account);
+        $reflection = new \ReflectionClass($publisher);
+        $apiProperty = $reflection->getProperty('api');
+        $apiProperty->setAccessible(true);
+        $apiProperty->setValue($publisher, $apiServiceMock);
+
+        $publisher->publishToChannel($article, $extractedData, $channel);
+    }
+
+    public function test_publish_to_channel_with_missing_description_uses_default(): void
+    {
+        $this->expectNotToPerformAssertions();
+        
+        $account = PlatformAccount::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'instance_url' => 'https://lemmy.test',
+            'username' => 'testuser',
+            'password' => 'testpass'
+        ]);
+
+        $article = Article::factory()->create([
+            'url' => 'https://example.com/article'
+        ]);
+
+        $instance = PlatformInstance::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'url' => 'https://lemmy.test'
+        ]);
+        
+        $channel = PlatformChannel::factory()->create([
+            'platform_instance_id' => $instance->id,
+            'channel_id' => 123,
+            'name' => 'testcommunity'
+        ]);
+
+        $extractedData = [
+            'title' => 'Test Title'
+        ];
+
+        // Mock LemmyAuthService
+        $this->mock(LemmyAuthService::class, function ($mock) use ($account) {
+            $mock->shouldReceive('getToken')
+                ->once()
+                ->with($account)
+                ->andReturn('test-jwt-token');
+        });
+
+        // Mock LemmyApiService
+        $apiServiceMock = Mockery::mock(LemmyApiService::class);
+        $apiServiceMock->shouldReceive('createPost')
+            ->once()
+            ->with(
+                'test-jwt-token',
+                'Test Title',
+                '',
+                123,
+                'https://example.com/article',
+                null,
+                null
+            )
+            ->andReturn([]);
+
+        // Use reflection to replace the api service in the publisher
+        $publisher = new LemmyPublisher($account);
+        $reflection = new \ReflectionClass($publisher);
+        $apiProperty = $reflection->getProperty('api');
+        $apiProperty->setAccessible(true);
+        $apiProperty->setValue($publisher, $apiServiceMock);
+
+        $publisher->publishToChannel($article, $extractedData, $channel);
+    }
+
+    public function test_publish_to_channel_throws_platform_auth_exception_when_auth_fails(): void
+    {
+        $account = PlatformAccount::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'instance_url' => 'https://lemmy.test',
+            'username' => 'testuser',
+            'password' => 'testpass'
+        ]);
+
+        $article = Article::factory()->create();
+        $channel = PlatformChannel::factory()->create();
+        $extractedData = ['title' => 'Test', 'description' => 'Test'];
+
+        // Mock LemmyAuthService to throw exception
+        $this->mock(LemmyAuthService::class, function ($mock) use ($account) {
+            $mock->shouldReceive('getToken')
+                ->once()
+                ->with($account)
+                ->andThrow(new PlatformAuthException(PlatformEnum::LEMMY, 'Auth failed'));
+        });
+
+        $publisher = new LemmyPublisher($account);
+
+        $this->expectException(PlatformAuthException::class);
+        $this->expectExceptionMessage('Auth failed');
+
+        $publisher->publishToChannel($article, $extractedData, $channel);
+    }
+
+    public function test_publish_to_channel_throws_exception_when_create_post_fails(): void
+    {
+        $account = PlatformAccount::factory()->create([
+            'platform' => PlatformEnum::LEMMY,
+            'instance_url' => 'https://lemmy.test',
+            'username' => 'testuser',
+            'password' => 'testpass'
+        ]);
+
+        $article = Article::factory()->create();
+        $channel = PlatformChannel::factory()->create();
+        $extractedData = ['title' => 'Test', 'description' => 'Test'];
+
+        // Mock LemmyAuthService
+        $this->mock(LemmyAuthService::class, function ($mock) use ($account) {
+            $mock->shouldReceive('getToken')
+                ->once()
+                ->with($account)
+                ->andReturn('test-jwt-token');
+        });
+
+        // Mock LemmyApiService to throw exception
+        $apiServiceMock = Mockery::mock(LemmyApiService::class);
+        $apiServiceMock->shouldReceive('createPost')
+            ->once()
+            ->andThrow(new Exception('Post creation failed'));
+
+        // Use reflection to replace the api service in the publisher
+        $publisher = new LemmyPublisher($account);
+        $reflection = new \ReflectionClass($publisher);
+        $apiProperty = $reflection->getProperty('api');
+        $apiProperty->setAccessible(true);
+        $apiProperty->setValue($publisher, $apiServiceMock);
+
+        $this->expectException(Exception::class);
+        $this->expectExceptionMessage('Post creation failed');
+
+        $publisher->publishToChannel($article, $extractedData, $channel);
+    }
+}
\ No newline at end of file
diff --git a/backend/tests/Unit/Services/ArticleFetcherTest.php b/backend/tests/Unit/Services/ArticleFetcherTest.php
index 77a63ad..d32528c 100644
--- a/backend/tests/Unit/Services/ArticleFetcherTest.php
+++ b/backend/tests/Unit/Services/ArticleFetcherTest.php
@@ -11,12 +11,21 @@
 use App\Services\Log\LogSaver;
 use Tests\TestCase;
 use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Http;
 use Mockery;
 
 class ArticleFetcherTest extends TestCase
 {
     use RefreshDatabase;
 
+    protected function setUp(): void
+    {
+        parent::setUp();
+        Http::fake([
+            '*' => Http::response('', 200)
+        ]);
+    }
+
     public function test_get_articles_from_feed_returns_collection(): void
     {
         $feed = Feed::factory()->create([
diff --git a/backend/tests/Unit/Services/Auth/LemmyAuthServiceTest.php b/backend/tests/Unit/Services/Auth/LemmyAuthServiceTest.php
index a5691f8..903f697 100644
--- a/backend/tests/Unit/Services/Auth/LemmyAuthServiceTest.php
+++ b/backend/tests/Unit/Services/Auth/LemmyAuthServiceTest.php
@@ -38,7 +38,8 @@ public function test_get_token_returns_cached_token_when_available(): void
             ->with($cacheKey)
             ->andReturn($cachedToken);
 
-        $result = LemmyAuthService::getToken($account);
+        $service = new LemmyAuthService();
+        $result = $service->getToken($account);
 
         $this->assertEquals($cachedToken, $result);
     }
@@ -68,7 +69,8 @@ public function test_get_token_throws_exception_when_username_missing(): void
         $this->expectException(PlatformAuthException::class);
         $this->expectExceptionMessage('Missing credentials for account: ');
 
-        LemmyAuthService::getToken($account);
+        $service = new LemmyAuthService();
+        $service->getToken($account);
     }
 
     public function test_get_token_throws_exception_when_password_missing(): void
@@ -96,7 +98,8 @@ public function test_get_token_throws_exception_when_password_missing(): void
         $this->expectException(PlatformAuthException::class);
         $this->expectExceptionMessage('Missing credentials for account: testuser');
 
-        LemmyAuthService::getToken($account);
+        $service = new LemmyAuthService();
+        $service->getToken($account);
     }
 
     public function test_get_token_throws_exception_when_instance_url_missing(): void
@@ -124,7 +127,8 @@ public function test_get_token_throws_exception_when_instance_url_missing(): voi
         $this->expectException(PlatformAuthException::class);
         $this->expectExceptionMessage('Missing credentials for account: testuser');
 
-        LemmyAuthService::getToken($account);
+        $service = new LemmyAuthService();
+        $service->getToken($account);
     }
 
     public function test_get_token_successfully_authenticates_and_caches_token(): void
@@ -169,8 +173,9 @@ public function test_get_token_uses_account_specific_cache_key(): void
             ->with($cacheKey2)
             ->andReturn('token2');
 
-        $result1 = LemmyAuthService::getToken($account1);
-        $result2 = LemmyAuthService::getToken($account2);
+        $service = new LemmyAuthService();
+        $result1 = $service->getToken($account1);
+        $result2 = $service->getToken($account2);
 
         $this->assertEquals('token1', $result1);
         $this->assertEquals('token2', $result2);
@@ -199,7 +204,8 @@ public function test_platform_auth_exception_contains_correct_platform(): void
             ->andReturn(null);
 
         try {
-            LemmyAuthService::getToken($account);
+            $service = new LemmyAuthService();
+        $service->getToken($account);
             $this->fail('Expected PlatformAuthException to be thrown');
         } catch (PlatformAuthException $e) {
             $this->assertEquals(PlatformEnum::LEMMY, $e->getPlatform());
diff --git a/backend/tests/Unit/Services/Parsers/VrtArticlePageParserTest.php b/backend/tests/Unit/Services/Parsers/VrtArticlePageParserTest.php
new file mode 100644
index 0000000..b6a5c12
--- /dev/null
+++ b/backend/tests/Unit/Services/Parsers/VrtArticlePageParserTest.php
@@ -0,0 +1,325 @@
+<?php
+
+namespace Tests\Unit\Services\Parsers;
+
+use App\Services\Parsers\VrtArticlePageParser;
+use Tests\TestCase;
+
+class VrtArticlePageParserTest extends TestCase
+{
+    public function test_extract_title_returns_og_title_when_present(): void
+    {
+        $html = '<html><head><meta property="og:title" content="VRT News Article Title"/></head></html>';
+        
+        $result = VrtArticlePageParser::extractTitle($html);
+        
+        $this->assertEquals('VRT News Article Title', $result);
+    }
+
+    public function test_extract_title_returns_h1_when_og_title_not_present(): void
+    {
+        $html = '<html><body><h1>Main Article Heading</h1></body></html>';
+        
+        $result = VrtArticlePageParser::extractTitle($html);
+        
+        $this->assertEquals('Main Article Heading', $result);
+    }
+
+    public function test_extract_title_returns_title_tag_when_og_title_and_h1_not_present(): void
+    {
+        $html = '<html><head><title>Page Title</title></head></html>';
+        
+        $result = VrtArticlePageParser::extractTitle($html);
+        
+        $this->assertEquals('Page Title', $result);
+    }
+
+    public function test_extract_title_decodes_html_entities(): void
+    {
+        $html = '<html><head><meta property="og:title" content="Title with &amp; special &quot;chars&quot;"/></head></html>';
+        
+        $result = VrtArticlePageParser::extractTitle($html);
+        
+        $this->assertEquals('Title with & special "chars"', $result);
+    }
+
+    public function test_extract_title_handles_h1_content_with_attributes(): void
+    {
+        $html = '<html><body><h1 class="title">Simple H1 Title</h1></body></html>';
+        
+        $result = VrtArticlePageParser::extractTitle($html);
+        
+        $this->assertEquals('Simple H1 Title', $result);
+    }
+
+    public function test_extract_title_handles_h1_with_nested_tags(): void
+    {
+        // Should extract content from h1 and strip nested tags
+        $html = '<html><body><h1>Title with <span>nested</span> tags</h1></body></html>';
+        
+        $result = VrtArticlePageParser::extractTitle($html);
+        
+        // Should extract and strip tags to get clean text
+        $this->assertEquals('Title with nested tags', $result);
+    }
+
+    public function test_extract_title_returns_null_when_none_found(): void
+    {
+        $html = '<html><body><p>No title tags here</p></body></html>';
+        
+        $result = VrtArticlePageParser::extractTitle($html);
+        
+        $this->assertNull($result);
+    }
+
+    public function test_extract_description_returns_og_description_when_present(): void
+    {
+        $html = '<html><head><meta property="og:description" content="This is the article description"/></head></html>';
+        
+        $result = VrtArticlePageParser::extractDescription($html);
+        
+        $this->assertEquals('This is the article description', $result);
+    }
+
+    public function test_extract_description_returns_first_paragraph_when_og_description_not_present(): void
+    {
+        $html = '<html><body><p>This is the first paragraph content.</p><p>Second paragraph.</p></body></html>';
+        
+        $result = VrtArticlePageParser::extractDescription($html);
+        
+        $this->assertEquals('This is the first paragraph content.', $result);
+    }
+
+    public function test_extract_description_decodes_html_entities(): void
+    {
+        $html = '<html><head><meta property="og:description" content="Description with &amp; entities &lt;test&gt;"/></head></html>';
+        
+        $result = VrtArticlePageParser::extractDescription($html);
+        
+        $this->assertEquals('Description with & entities <test>', $result);
+    }
+
+    public function test_extract_description_strips_tags_from_paragraph(): void
+    {
+        $html = '<html><body><p>Paragraph with <strong>bold</strong> and <em>italic</em> text.</p></body></html>';
+        
+        $result = VrtArticlePageParser::extractDescription($html);
+        
+        $this->assertEquals('Paragraph with bold and italic text.', $result);
+    }
+
+    public function test_extract_description_returns_null_when_none_found(): void
+    {
+        $html = '<html><body><div>No paragraphs or meta description</div></body></html>';
+        
+        $result = VrtArticlePageParser::extractDescription($html);
+        
+        $this->assertNull($result);
+    }
+
+    public function test_extract_full_article_returns_all_paragraphs(): void
+    {
+        $html = '<html><body>
+            <p>First paragraph content.</p>
+            <p>Second paragraph with more text.</p>
+            <p>Third paragraph here.</p>
+        </body></html>';
+        
+        $result = VrtArticlePageParser::extractFullArticle($html);
+        
+        $expected = "First paragraph content.\n\nSecond paragraph with more text.\n\nThird paragraph here.";
+        $this->assertEquals($expected, $result);
+    }
+
+    public function test_extract_full_article_removes_script_and_style_tags(): void
+    {
+        $html = '<html><body>
+            <script>alert("test");</script>
+            <style>body { color: red; }</style>
+            <p>Actual content paragraph.</p>
+        </body></html>';
+        
+        $result = VrtArticlePageParser::extractFullArticle($html);
+        
+        $this->assertEquals('Actual content paragraph.', $result);
+    }
+
+    public function test_extract_full_article_strips_tags_from_paragraphs(): void
+    {
+        $html = '<html><body>
+            <p>Paragraph with <strong>bold</strong> and <a href="#">link</a> tags.</p>
+        </body></html>';
+        
+        $result = VrtArticlePageParser::extractFullArticle($html);
+        
+        $this->assertEquals('Paragraph with bold and link tags.', $result);
+    }
+
+    public function test_extract_full_article_filters_out_empty_paragraphs(): void
+    {
+        $html = '<html><body>
+            <p>First paragraph.</p>
+            <p></p>
+            <p>   </p>
+            <p>Second paragraph.</p>
+        </body></html>';
+        
+        $result = VrtArticlePageParser::extractFullArticle($html);
+        
+        $this->assertEquals("First paragraph.\n\nSecond paragraph.", $result);
+    }
+
+    public function test_extract_full_article_decodes_html_entities(): void
+    {
+        $html = '<html><body>
+            <p>Text with &amp; entities and &quot;quotes&quot;.</p>
+        </body></html>';
+        
+        $result = VrtArticlePageParser::extractFullArticle($html);
+        
+        $this->assertEquals('Text with & entities and "quotes".', $result);
+    }
+
+    public function test_extract_full_article_returns_null_when_no_paragraphs(): void
+    {
+        $html = '<html><body><div>No paragraph tags</div></body></html>';
+        
+        $result = VrtArticlePageParser::extractFullArticle($html);
+        
+        $this->assertNull($result);
+    }
+
+    public function test_extract_thumbnail_returns_og_image_when_present(): void
+    {
+        $html = '<html><head><meta property="og:image" content="https://example.com/image.jpg"/></head></html>';
+        
+        $result = VrtArticlePageParser::extractThumbnail($html);
+        
+        $this->assertEquals('https://example.com/image.jpg', $result);
+    }
+
+    public function test_extract_thumbnail_returns_first_img_src_when_og_image_not_present(): void
+    {
+        $html = '<html><body><img src="https://example.com/photo.png" alt="Photo"/></body></html>';
+        
+        $result = VrtArticlePageParser::extractThumbnail($html);
+        
+        $this->assertEquals('https://example.com/photo.png', $result);
+    }
+
+    public function test_extract_thumbnail_returns_null_when_none_found(): void
+    {
+        $html = '<html><body><div>No images here</div></body></html>';
+        
+        $result = VrtArticlePageParser::extractThumbnail($html);
+        
+        $this->assertNull($result);
+    }
+
+    public function test_extract_data_returns_all_extracted_fields(): void
+    {
+        $html = '<html>
+            <head>
+                <meta property="og:title" content="Article Title"/>
+                <meta property="og:description" content="Article Description"/>
+                <meta property="og:image" content="https://example.com/thumb.jpg"/>
+            </head>
+            <body>
+                <p>First paragraph of article.</p>
+                <p>Second paragraph of article.</p>
+            </body>
+        </html>';
+        
+        $result = VrtArticlePageParser::extractData($html);
+        
+        $this->assertIsArray($result);
+        $this->assertEquals('Article Title', $result['title']);
+        $this->assertEquals('Article Description', $result['description']);
+        $this->assertEquals("First paragraph of article.\n\nSecond paragraph of article.", $result['full_article']);
+        $this->assertEquals('https://example.com/thumb.jpg', $result['thumbnail']);
+    }
+
+    public function test_extract_data_handles_missing_elements(): void
+    {
+        $html = '<html><body><div>Minimal content</div></body></html>';
+        
+        $result = VrtArticlePageParser::extractData($html);
+        
+        $this->assertIsArray($result);
+        $this->assertArrayHasKey('title', $result);
+        $this->assertArrayHasKey('description', $result);
+        $this->assertArrayHasKey('full_article', $result);
+        $this->assertArrayHasKey('thumbnail', $result);
+        
+        $this->assertNull($result['title']);
+        $this->assertNull($result['description']);
+        $this->assertNull($result['full_article']);
+        $this->assertNull($result['thumbnail']);
+    }
+
+    public function test_extract_data_with_partial_content(): void
+    {
+        $html = '<html>
+            <head><title>Just Title</title></head>
+            <body><p>Single paragraph</p></body>
+        </html>';
+        
+        $result = VrtArticlePageParser::extractData($html);
+        
+        $this->assertEquals('Just Title', $result['title']);
+        $this->assertEquals('Single paragraph', $result['description']);
+        $this->assertEquals('Single paragraph', $result['full_article']);
+        $this->assertNull($result['thumbnail']);
+    }
+
+    public function test_extract_title_prioritizes_og_title_over_h1_and_title(): void
+    {
+        $html = '<html>
+            <head>
+                <title>Page Title</title>
+                <meta property="og:title" content="OG Title"/>
+            </head>
+            <body><h1>H1 Title</h1></body>
+        </html>';
+        
+        $result = VrtArticlePageParser::extractTitle($html);
+        
+        $this->assertEquals('OG Title', $result);
+    }
+
+    public function test_extract_title_prioritizes_h1_over_title_when_no_og_title(): void
+    {
+        $html = '<html>
+            <head><title>Page Title</title></head>
+            <body><h1>H1 Title</h1></body>
+        </html>';
+        
+        $result = VrtArticlePageParser::extractTitle($html);
+        
+        $this->assertEquals('H1 Title', $result);
+    }
+
+    public function test_extract_description_prioritizes_og_description_over_paragraph(): void
+    {
+        $html = '<html>
+            <head><meta property="og:description" content="OG Description"/></head>
+            <body><p>First paragraph content</p></body>
+        </html>';
+        
+        $result = VrtArticlePageParser::extractDescription($html);
+        
+        $this->assertEquals('OG Description', $result);
+    }
+
+    public function test_extract_thumbnail_prioritizes_og_image_over_img_src(): void
+    {
+        $html = '<html>
+            <head><meta property="og:image" content="https://example.com/og-image.jpg"/></head>
+            <body><img src="https://example.com/img-src.jpg" alt="Image"/></body>
+        </html>';
+        
+        $result = VrtArticlePageParser::extractThumbnail($html);
+        
+        $this->assertEquals('https://example.com/og-image.jpg', $result);
+    }
+}
\ No newline at end of file
diff --git a/backend/tests/Unit/Services/RoutingValidationServiceTest.php b/backend/tests/Unit/Services/RoutingValidationServiceTest.php
new file mode 100644
index 0000000..6f519cd
--- /dev/null
+++ b/backend/tests/Unit/Services/RoutingValidationServiceTest.php
@@ -0,0 +1,202 @@
+<?php
+
+namespace Tests\Unit\Services;
+
+use App\Exceptions\RoutingMismatchException;
+use App\Models\Feed;
+use App\Models\Language;
+use App\Models\PlatformChannel;
+use App\Models\PlatformInstance;
+use App\Services\RoutingValidationService;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Collection;
+use Tests\TestCase;
+
+class RoutingValidationServiceTest extends TestCase
+{
+    use RefreshDatabase;
+
+    private RoutingValidationService $service;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+        $this->service = new RoutingValidationService();
+    }
+
+    public function test_validate_language_compatibility_passes_when_feed_has_no_language(): void
+    {
+        $feed = Feed::factory()->create(['language_id' => null]);
+        
+        $enLanguage = Language::factory()->create(['short_code' => 'en']);
+        $esLanguage = Language::factory()->create(['short_code' => 'es']);
+        $instance = PlatformInstance::factory()->create();
+        
+        $channels = collect([
+            PlatformChannel::factory()->create(['language_id' => $enLanguage->id, 'platform_instance_id' => $instance->id]),
+            PlatformChannel::factory()->create(['language_id' => $esLanguage->id, 'platform_instance_id' => $instance->id]),
+        ]);
+
+        $this->service->validateLanguageCompatibility($feed, $channels);
+
+        // If we get here without exception, the test passes
+        $this->assertTrue(true);
+    }
+
+    public function test_validate_language_compatibility_passes_when_channels_have_no_language(): void
+    {
+        $enLanguage = Language::factory()->create(['short_code' => 'en']);
+        $feed = Feed::factory()->create(['language_id' => $enLanguage->id]);
+        
+        $instance = PlatformInstance::factory()->create();
+        $channels = collect([
+            PlatformChannel::factory()->create(['language_id' => null, 'platform_instance_id' => $instance->id]),
+            PlatformChannel::factory()->create(['language_id' => null, 'platform_instance_id' => $instance->id]),
+        ]);
+
+        $this->service->validateLanguageCompatibility($feed, $channels);
+
+        // If we get here without exception, the test passes
+        $this->assertTrue(true);
+    }
+
+    public function test_validate_language_compatibility_passes_when_languages_match(): void
+    {
+        $enLanguage = Language::factory()->create(['short_code' => 'en']);
+        $feed = Feed::factory()->create(['language_id' => $enLanguage->id]);
+        
+        $instance = PlatformInstance::factory()->create();
+        $channels = collect([
+            PlatformChannel::factory()->create(['language_id' => $enLanguage->id, 'platform_instance_id' => $instance->id]),
+            PlatformChannel::factory()->create(['language_id' => $enLanguage->id, 'platform_instance_id' => $instance->id]),
+        ]);
+
+        $this->service->validateLanguageCompatibility($feed, $channels);
+
+        // If we get here without exception, the test passes
+        $this->assertTrue(true);
+    }
+
+    public function test_validate_language_compatibility_passes_with_mixed_null_and_matching_languages(): void
+    {
+        $enLanguage = Language::factory()->create(['short_code' => 'en']);
+        $feed = Feed::factory()->create(['language_id' => $enLanguage->id]);
+        
+        $instance = PlatformInstance::factory()->create();
+        $channels = collect([
+            PlatformChannel::factory()->create(['language_id' => $enLanguage->id, 'platform_instance_id' => $instance->id]),
+            PlatformChannel::factory()->create(['language_id' => null, 'platform_instance_id' => $instance->id]),
+            PlatformChannel::factory()->create(['language_id' => $enLanguage->id, 'platform_instance_id' => $instance->id]),
+        ]);
+
+        $this->service->validateLanguageCompatibility($feed, $channels);
+
+        // If we get here without exception, the test passes
+        $this->assertTrue(true);
+    }
+
+    public function test_validate_language_compatibility_throws_exception_when_languages_mismatch(): void
+    {
+        $enLanguage = Language::factory()->create(['short_code' => 'en']);
+        $esLanguage = Language::factory()->create(['short_code' => 'es']);
+        
+        $feed = Feed::factory()->create(['language_id' => $enLanguage->id]);
+        
+        $instance = PlatformInstance::factory()->create();
+        $channel = PlatformChannel::factory()->create(['language_id' => $esLanguage->id, 'platform_instance_id' => $instance->id]);
+        $channels = collect([$channel]);
+
+        $this->expectException(RoutingMismatchException::class);
+
+        $this->service->validateLanguageCompatibility($feed, $channels);
+    }
+
+    public function test_validate_language_compatibility_throws_exception_on_first_mismatch(): void
+    {
+        $enLanguage = Language::factory()->create(['short_code' => 'en']);
+        $esLanguage = Language::factory()->create(['short_code' => 'es']);
+        
+        $feed = Feed::factory()->create(['language_id' => $enLanguage->id]);
+        
+        $instance = PlatformInstance::factory()->create();
+        $mismatchChannel = PlatformChannel::factory()->create(['language_id' => $esLanguage->id, 'platform_instance_id' => $instance->id]);
+        $matchingChannel = PlatformChannel::factory()->create(['language_id' => $enLanguage->id, 'platform_instance_id' => $instance->id]);
+        
+        $channels = collect([$mismatchChannel, $matchingChannel]);
+
+        $this->expectException(RoutingMismatchException::class);
+
+        $this->service->validateLanguageCompatibility($feed, $channels);
+    }
+
+    public function test_validate_language_compatibility_with_empty_collection(): void
+    {
+        $enLanguage = Language::factory()->create(['short_code' => 'en']);
+        $feed = Feed::factory()->create(['language_id' => $enLanguage->id]);
+        $channels = collect([]);
+
+        $this->service->validateLanguageCompatibility($feed, $channels);
+
+        // If we get here without exception, the test passes
+        $this->assertTrue(true);
+    }
+
+    public function test_validate_language_compatibility_exception_contains_correct_feed_and_channel(): void
+    {
+        $enLanguage = Language::factory()->create(['short_code' => 'en']);
+        $esLanguage = Language::factory()->create(['short_code' => 'es']);
+        
+        $feed = Feed::factory()->create(['language_id' => $enLanguage->id]);
+        
+        $instance = PlatformInstance::factory()->create();
+        $channel = PlatformChannel::factory()->create(['language_id' => $esLanguage->id, 'platform_instance_id' => $instance->id]);
+        $channels = collect([$channel]);
+
+        try {
+            $this->service->validateLanguageCompatibility($feed, $channels);
+            $this->fail('Expected RoutingMismatchException to be thrown');
+        } catch (RoutingMismatchException $e) {
+            // Exception should contain the feed and channel that caused the mismatch
+            $this->assertInstanceOf(RoutingMismatchException::class, $e);
+        }
+    }
+
+    public function test_validate_language_compatibility_with_multiple_mismatching_channels(): void
+    {
+        $enLanguage = Language::factory()->create(['short_code' => 'en']);
+        $esLanguage = Language::factory()->create(['short_code' => 'es']);
+        $frLanguage = Language::factory()->create(['short_code' => 'fr']);
+        
+        $feed = Feed::factory()->create(['language_id' => $enLanguage->id]);
+        
+        $instance = PlatformInstance::factory()->create();
+        $channels = collect([
+            PlatformChannel::factory()->create(['language_id' => $esLanguage->id, 'platform_instance_id' => $instance->id]),  // This should trigger exception
+            PlatformChannel::factory()->create(['language_id' => $frLanguage->id, 'platform_instance_id' => $instance->id]),  // This won't be reached
+        ]);
+
+        $this->expectException(RoutingMismatchException::class);
+
+        $this->service->validateLanguageCompatibility($feed, $channels);
+    }
+
+    public function test_validate_language_compatibility_ignores_channels_after_first_mismatch(): void
+    {
+        $enLanguage = Language::factory()->create(['short_code' => 'en']);
+        $esLanguage = Language::factory()->create(['short_code' => 'es']);
+        $frLanguage = Language::factory()->create(['short_code' => 'fr']);
+        
+        $feed = Feed::factory()->create(['language_id' => $enLanguage->id]);
+        
+        $instance = PlatformInstance::factory()->create();
+        $channels = collect([
+            PlatformChannel::factory()->create(['language_id' => null, 'platform_instance_id' => $instance->id]),  // Should be skipped
+            PlatformChannel::factory()->create(['language_id' => $esLanguage->id, 'platform_instance_id' => $instance->id]),  // Should cause exception
+            PlatformChannel::factory()->create(['language_id' => $frLanguage->id, 'platform_instance_id' => $instance->id]),  // Should not be reached
+        ]);
+
+        $this->expectException(RoutingMismatchException::class);
+
+        $this->service->validateLanguageCompatibility($feed, $channels);
+    }
+}
\ No newline at end of file
diff --git a/backend/tests/Unit/Services/ValidationServiceTest.php b/backend/tests/Unit/Services/ValidationServiceTest.php
index b104585..e282266 100644
--- a/backend/tests/Unit/Services/ValidationServiceTest.php
+++ b/backend/tests/Unit/Services/ValidationServiceTest.php
@@ -7,11 +7,20 @@
 use App\Models\Feed;
 use Tests\TestCase;
 use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Http;
 
 class ValidationServiceTest extends TestCase
 {
     use RefreshDatabase;
 
+    protected function setUp(): void
+    {
+        parent::setUp();
+        Http::fake([
+            '*' => Http::response('', 200)
+        ]);
+    }
+
     public function test_validate_returns_article_with_validation_status(): void
     {
         $feed = Feed::factory()->create();