Refactor the "God Component" (App.tsx) Your App.tsx has lower branch coverage (77%) and uncovered lines. This usually means it's doing too much: managing routing, auth state checks, theme toggling, and global error handling. Move Logic to "Initialization Hooks": Create a useAppInitialization hook that handles the OAuth token check, version check, and theme sync. Use Layouts for Routing: Move the "What's New" modal and "Anonymous Banner" into the MainLayout or a specialized AppGuard component, leaving App.tsx as a clean list of Routes.

src/routes/user.routes.test.ts

@@ -149,8 +149,8 @@ describe('User Routes (/api/users)', () => {
 
       // Assert
       expect(logger.error).toHaveBeenCalledWith(
-        { err: mkdirError },
-        'Failed to create avatar upload directory',
+        { error: mkdirError },
+        'Failed to create multer storage directories on startup.',
       );
       vi.doUnmock('node:fs/promises'); // Clean up
     });