fix: add /setup/unresolved to exempt paths and improve error handling

- Add /setup/unresolved to EXEMPT_PATHS to allow access after initial setup
- Handle 401 Unauthorized response in loading page (clear invalid token)
- Add console.log statements for debugging setup flow issues

src/server/middleware/setup_redirect.py

@@ -32,6 +32,7 @@ class SetupRedirectMiddleware(BaseHTTPMiddleware):
     # Paths that should always be accessible, even without setup
     EXEMPT_PATHS = {
         "/setup",  # Setup page itself
+        "/setup/unresolved",  # Unresolved folders page (after setup)
         "/loading",  # Loading page (initialization progress)
         "/login",  # Login page (needs to be accessible after setup)
         "/queue",  # Queue page (for initial load)