diff --git a/.do/app.yaml b/.do/app.yaml
index 3f28965..f22be37 100644
--- a/.do/app.yaml
+++ b/.do/app.yaml
@@ -68,3 +68,4 @@ static_sites:
 
     routes:
       - path: /
+
diff --git a/.gitignore b/.gitignore
index b0a135b..ba398a1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,3 +41,4 @@ coverage/
 # Misc
 .turso/
 
+
diff --git a/DEPLOYMENT.md b/DEPLOYMENT.md
index 5819025..6e36a09 100644
--- a/DEPLOYMENT.md
+++ b/DEPLOYMENT.md
@@ -240,3 +240,4 @@ Available sizes:
 
 **Ready to deploy?** Follow the steps above and you'll be live in minutes! 🚀
 
+
diff --git a/QUICKSTART.md b/QUICKSTART.md
index 61706b9..94933e1 100644
--- a/QUICKSTART.md
+++ b/QUICKSTART.md
@@ -79,3 +79,4 @@ See [DEPLOYMENT.md](./DEPLOYMENT.md) for detailed instructions and troubleshooti
 
 **Total: $5/month**
 
+
diff --git a/backend/package.json b/backend/package.json
index de63f9f..af822b5 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -34,3 +34,4 @@
   }
 }
 
+
diff --git a/backend/src/config/database.ts b/backend/src/config/database.ts
index 746f57c..cb721ad 100644
--- a/backend/src/config/database.ts
+++ b/backend/src/config/database.ts
@@ -29,3 +29,4 @@ export async function setSetting(key: string, value: string): Promise<void> {
   });
 }
 
+
diff --git a/backend/src/config/env.ts b/backend/src/config/env.ts
index 1ef7a69..1763964 100644
--- a/backend/src/config/env.ts
+++ b/backend/src/config/env.ts
@@ -58,3 +58,4 @@ export const env = {
   initialAdminPassword: process.env.INITIAL_ADMIN_PASSWORD
 };
 
+
diff --git a/backend/src/controllers/auth.controller.ts b/backend/src/controllers/auth.controller.ts
index 50810b3..d10063b 100644
--- a/backend/src/controllers/auth.controller.ts
+++ b/backend/src/controllers/auth.controller.ts
@@ -151,6 +151,16 @@ export async function logout(req: AuthRequest, res: Response) {
 
 export async function getCurrentUser(req: AuthRequest, res: Response) {
   try {
+    if (!req.userId) {
+      return res.status(401).json({
+        success: false,
+        error: {
+          code: 'UNAUTHORIZED',
+          message: 'User not authenticated'
+        }
+      });
+    }
+
     const result = await db.execute({
       sql: 'SELECT id, username, last_login FROM users WHERE id = ?',
       args: [req.userId]
@@ -188,3 +198,4 @@ export async function getCurrentUser(req: AuthRequest, res: Response) {
   }
 }
 
+
diff --git a/backend/src/controllers/channels.controller.ts b/backend/src/controllers/channels.controller.ts
index 8f7397a..3a1f104 100644
--- a/backend/src/controllers/channels.controller.ts
+++ b/backend/src/controllers/channels.controller.ts
@@ -271,3 +271,4 @@ export async function refreshChannel(req: AuthRequest, res: Response) {
   }
 }
 
+
diff --git a/backend/src/middleware/auth.ts b/backend/src/middleware/auth.ts
index 9b24b19..9a2e9a7 100644
--- a/backend/src/middleware/auth.ts
+++ b/backend/src/middleware/auth.ts
@@ -42,3 +42,4 @@ export function authMiddleware(
   }
 }
 
+
diff --git a/backend/src/middleware/errorHandler.ts b/backend/src/middleware/errorHandler.ts
index 51687d1..bb5c1b5 100644
--- a/backend/src/middleware/errorHandler.ts
+++ b/backend/src/middleware/errorHandler.ts
@@ -22,3 +22,4 @@ export function errorHandler(
   });
 }
 
+
diff --git a/backend/src/middleware/rateLimiter.ts b/backend/src/middleware/rateLimiter.ts
index 9ccd2b9..7d704d7 100644
--- a/backend/src/middleware/rateLimiter.ts
+++ b/backend/src/middleware/rateLimiter.ts
@@ -28,3 +28,4 @@ export const apiLimiter = rateLimit({
   legacyHeaders: false
 });
 
+
diff --git a/backend/src/routes/auth.routes.ts b/backend/src/routes/auth.routes.ts
index 2ba83da..78c1392 100644
--- a/backend/src/routes/auth.routes.ts
+++ b/backend/src/routes/auth.routes.ts
@@ -13,3 +13,4 @@ router.get('/me', authMiddleware, getCurrentUser);
 
 export default router;
 
+
diff --git a/backend/src/routes/channels.routes.ts b/backend/src/routes/channels.routes.ts
index 93fc1b2..c11fa86 100644
--- a/backend/src/routes/channels.routes.ts
+++ b/backend/src/routes/channels.routes.ts
@@ -15,3 +15,4 @@ router.put('/:id/refresh', authMiddleware, refreshChannel);
 
 export default router;
 
+
diff --git a/backend/src/routes/videos.routes.ts b/backend/src/routes/videos.routes.ts
index c3ae1bc..b68b358 100644
--- a/backend/src/routes/videos.routes.ts
+++ b/backend/src/routes/videos.routes.ts
@@ -13,3 +13,4 @@ router.post('/refresh', authMiddleware, refreshVideos);
 
 export default router;
 
+
diff --git a/backend/src/services/auth.service.ts b/backend/src/services/auth.service.ts
index 4cd4416..3e3e804 100644
--- a/backend/src/services/auth.service.ts
+++ b/backend/src/services/auth.service.ts
@@ -9,7 +9,7 @@ export async function createTokens(userId: number, username: string) {
   const accessToken = jwt.sign(
     { userId, username, type: 'access' },
     env.jwtSecret,
-    { expiresIn: env.accessTokenExpiry }
+    { expiresIn: env.accessTokenExpiry as string }
   );
   
   // Refresh token (long-lived)
@@ -17,7 +17,7 @@ export async function createTokens(userId: number, username: string) {
   const refreshToken = jwt.sign(
     { token: refreshTokenValue, userId, type: 'refresh' },
     env.jwtRefreshSecret,
-    { expiresIn: env.refreshTokenExpiry }
+    { expiresIn: env.refreshTokenExpiry as string }
   );
   
   // Store refresh token in database
@@ -59,7 +59,7 @@ export async function refreshAccessToken(refreshToken: string) {
     const accessToken = jwt.sign(
       { userId: tokenData.user_id, username: tokenData.username, type: 'access' },
       env.jwtSecret,
-      { expiresIn: env.accessTokenExpiry }
+      { expiresIn: env.accessTokenExpiry as string }
     );
     
     return { accessToken };
@@ -90,3 +90,4 @@ export async function hashPassword(password: string): Promise<string> {
   return bcrypt.hash(password, 10);
 }
 
+
diff --git a/backend/src/services/youtube.service.ts b/backend/src/services/youtube.service.ts
index 60c305d..2e08881 100644
--- a/backend/src/services/youtube.service.ts
+++ b/backend/src/services/youtube.service.ts
@@ -146,3 +146,4 @@ export function formatDuration(isoDuration: string): string {
   return `${minutes || '0'}:${seconds.padStart(2, '0')}`;
 }
 
+
diff --git a/backend/src/setup/initialSetup.ts b/backend/src/setup/initialSetup.ts
index f9d5063..94d8c96 100644
--- a/backend/src/setup/initialSetup.ts
+++ b/backend/src/setup/initialSetup.ts
@@ -27,3 +27,4 @@ export async function createInitialAdmin() {
   }
 }
 
+
diff --git a/backend/src/types/index.ts b/backend/src/types/index.ts
index 57b7955..11f2a90 100644
--- a/backend/src/types/index.ts
+++ b/backend/src/types/index.ts
@@ -59,3 +59,4 @@ export interface ApiResponse<T = any> {
   };
 }
 
+
diff --git a/backend/tsconfig.json b/backend/tsconfig.json
index 86c99ca..3986ae2 100644
--- a/backend/tsconfig.json
+++ b/backend/tsconfig.json
@@ -17,3 +17,4 @@
   "exclude": ["node_modules", "dist"]
 }
 
+
diff --git a/frontend/index.html b/frontend/index.html
index 517df89..fd7e8b0 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -12,3 +12,4 @@
   </body>
 </html>
 
+
diff --git a/frontend/package.json b/frontend/package.json
index 3756cf5..901ed1f 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -23,3 +23,4 @@
   }
 }
 
+
diff --git a/frontend/src/App.css b/frontend/src/App.css
index 3a7161c..0d5dc57 100644
--- a/frontend/src/App.css
+++ b/frontend/src/App.css
@@ -59,3 +59,4 @@ body {
   background-color: #0556c4;
 }
 
+
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 3ef7201..11de22c 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -38,3 +38,4 @@ function App() {
 
 export default App;
 
+
diff --git a/frontend/src/components/ChannelManager/ChannelManager.css b/frontend/src/components/ChannelManager/ChannelManager.css
index 5c1fe9b..3e739ce 100644
--- a/frontend/src/components/ChannelManager/ChannelManager.css
+++ b/frontend/src/components/ChannelManager/ChannelManager.css
@@ -172,3 +172,4 @@
   }
 }
 
+
diff --git a/frontend/src/components/ChannelManager/ChannelManager.tsx b/frontend/src/components/ChannelManager/ChannelManager.tsx
index 7900e02..0bc9cb3 100644
--- a/frontend/src/components/ChannelManager/ChannelManager.tsx
+++ b/frontend/src/components/ChannelManager/ChannelManager.tsx
@@ -112,3 +112,4 @@ export function ChannelManager() {
   );
 }
 
+
diff --git a/frontend/src/components/ErrorBoundary.tsx b/frontend/src/components/ErrorBoundary.tsx
index 543e524..bc562d3 100644
--- a/frontend/src/components/ErrorBoundary.tsx
+++ b/frontend/src/components/ErrorBoundary.tsx
@@ -40,3 +40,4 @@ export class ErrorBoundary extends React.Component<Props, State> {
   }
 }
 
+
diff --git a/frontend/src/components/ProtectedRoute.tsx b/frontend/src/components/ProtectedRoute.tsx
index a56cb65..4d23923 100644
--- a/frontend/src/components/ProtectedRoute.tsx
+++ b/frontend/src/components/ProtectedRoute.tsx
@@ -19,3 +19,4 @@ export function ProtectedRoute({ children }: ProtectedRouteProps) {
   return <>{children}</>;
 }
 
+
diff --git a/frontend/src/components/SearchFilter/SearchFilter.css b/frontend/src/components/SearchFilter/SearchFilter.css
index 823be56..f8e2c1f 100644
--- a/frontend/src/components/SearchFilter/SearchFilter.css
+++ b/frontend/src/components/SearchFilter/SearchFilter.css
@@ -108,3 +108,4 @@
   }
 }
 
+
diff --git a/frontend/src/components/SearchFilter/SearchFilter.tsx b/frontend/src/components/SearchFilter/SearchFilter.tsx
index 296017f..6301a24 100644
--- a/frontend/src/components/SearchFilter/SearchFilter.tsx
+++ b/frontend/src/components/SearchFilter/SearchFilter.tsx
@@ -80,3 +80,4 @@ export function SearchFilter({
   );
 }
 
+
diff --git a/frontend/src/components/VideoCard/VideoCard.css b/frontend/src/components/VideoCard/VideoCard.css
index 6295fd0..6b37148 100644
--- a/frontend/src/components/VideoCard/VideoCard.css
+++ b/frontend/src/components/VideoCard/VideoCard.css
@@ -101,3 +101,4 @@
   }
 }
 
+
diff --git a/frontend/src/components/VideoCard/VideoCard.tsx b/frontend/src/components/VideoCard/VideoCard.tsx
index 51779da..67d5dfc 100644
--- a/frontend/src/components/VideoCard/VideoCard.tsx
+++ b/frontend/src/components/VideoCard/VideoCard.tsx
@@ -61,3 +61,4 @@ export function VideoCard({ video, onClick }: VideoCardProps) {
   );
 }
 
+
diff --git a/frontend/src/components/VideoGrid/VideoGrid.css b/frontend/src/components/VideoGrid/VideoGrid.css
index 90c8773..7c07baf 100644
--- a/frontend/src/components/VideoGrid/VideoGrid.css
+++ b/frontend/src/components/VideoGrid/VideoGrid.css
@@ -153,3 +153,4 @@
   }
 }
 
+
diff --git a/frontend/src/components/VideoGrid/VideoGrid.tsx b/frontend/src/components/VideoGrid/VideoGrid.tsx
index 4c1511f..359962a 100644
--- a/frontend/src/components/VideoGrid/VideoGrid.tsx
+++ b/frontend/src/components/VideoGrid/VideoGrid.tsx
@@ -117,3 +117,4 @@ export function VideoGrid({
   );
 }
 
+
diff --git a/frontend/src/components/VideoPlayer/VideoPlayer.css b/frontend/src/components/VideoPlayer/VideoPlayer.css
index 2043623..435ea32 100644
--- a/frontend/src/components/VideoPlayer/VideoPlayer.css
+++ b/frontend/src/components/VideoPlayer/VideoPlayer.css
@@ -79,3 +79,4 @@
   }
 }
 
+
diff --git a/frontend/src/components/VideoPlayer/VideoPlayer.tsx b/frontend/src/components/VideoPlayer/VideoPlayer.tsx
index 9e180e4..242a527 100644
--- a/frontend/src/components/VideoPlayer/VideoPlayer.tsx
+++ b/frontend/src/components/VideoPlayer/VideoPlayer.tsx
@@ -42,3 +42,4 @@ export function VideoPlayer({ videoId, onClose }: VideoPlayerProps) {
   );
 }
 
+
diff --git a/frontend/src/hooks/useAuth.tsx b/frontend/src/hooks/useAuth.tsx
index c93ac69..4279a83 100644
--- a/frontend/src/hooks/useAuth.tsx
+++ b/frontend/src/hooks/useAuth.tsx
@@ -69,3 +69,4 @@ export const useAuth = () => {
   return context;
 };
 
+
diff --git a/frontend/src/hooks/useChannels.ts b/frontend/src/hooks/useChannels.ts
index 1d34415..b740fb5 100644
--- a/frontend/src/hooks/useChannels.ts
+++ b/frontend/src/hooks/useChannels.ts
@@ -53,3 +53,4 @@ export function useChannels() {
   };
 }
 
+
diff --git a/frontend/src/main.tsx b/frontend/src/main.tsx
index 9b446b0..bdd6477 100644
--- a/frontend/src/main.tsx
+++ b/frontend/src/main.tsx
@@ -8,3 +8,4 @@ ReactDOM.createRoot(document.getElementById('root')!).render(
   </React.StrictMode>,
 )
 
+
diff --git a/frontend/src/pages/AdminPage.css b/frontend/src/pages/AdminPage.css
index 5467a58..e682e67 100644
--- a/frontend/src/pages/AdminPage.css
+++ b/frontend/src/pages/AdminPage.css
@@ -23,3 +23,4 @@
   color: #606060;
 }
 
+
diff --git a/frontend/src/pages/AdminPage.tsx b/frontend/src/pages/AdminPage.tsx
index 5fd4870..302f381 100644
--- a/frontend/src/pages/AdminPage.tsx
+++ b/frontend/src/pages/AdminPage.tsx
@@ -14,3 +14,4 @@ export function AdminPage() {
   );
 }
 
+
diff --git a/frontend/src/pages/LoginPage.css b/frontend/src/pages/LoginPage.css
index f72dec9..89f0695 100644
--- a/frontend/src/pages/LoginPage.css
+++ b/frontend/src/pages/LoginPage.css
@@ -97,3 +97,4 @@
   cursor: not-allowed;
 }
 
+
diff --git a/frontend/src/pages/LoginPage.tsx b/frontend/src/pages/LoginPage.tsx
index 3f315bd..58e5dd4 100644
--- a/frontend/src/pages/LoginPage.tsx
+++ b/frontend/src/pages/LoginPage.tsx
@@ -72,3 +72,4 @@ export function LoginPage() {
   );
 }
 
+
diff --git a/frontend/src/services/apiClient.ts b/frontend/src/services/apiClient.ts
index 82095f3..5234af4 100644
--- a/frontend/src/services/apiClient.ts
+++ b/frontend/src/services/apiClient.ts
@@ -119,3 +119,4 @@ export const videosApi = {
     api.post('/videos/refresh', { channelIds })
 };
 
+
diff --git a/frontend/tsconfig.json b/frontend/tsconfig.json
index 7844ad4..6d04e4b 100644
--- a/frontend/tsconfig.json
+++ b/frontend/tsconfig.json
@@ -20,3 +20,4 @@
   "references": [{ "path": "./tsconfig.node.json" }]
 }
 
+
diff --git a/frontend/tsconfig.node.json b/frontend/tsconfig.node.json
index e428d50..b72368a 100644
--- a/frontend/tsconfig.node.json
+++ b/frontend/tsconfig.node.json
@@ -9,3 +9,4 @@
   "include": ["vite.config.ts"]
 }
 
+
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index 60c65b3..158335c 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -8,3 +8,4 @@ export default defineConfig({
   }
 })
 
+
diff --git a/navbar-refactor-plan.md b/navbar-refactor-plan.md
index 763afcd..7c5b36d 100644
--- a/navbar-refactor-plan.md
+++ b/navbar-refactor-plan.md
@@ -226,3 +226,4 @@ But this requires lifting state to App level and prop drilling.
 **Estimated time:** 30-45 minutes
 **Complexity:** Medium (URL params + responsive styling)
 
+
diff --git a/package.json b/package.json
index 6ddbc9e..1065b91 100644
--- a/package.json
+++ b/package.json
@@ -34,3 +34,4 @@
     "tsx": "^4.7.0"
   }
 }
+