add automatic redirect from setup to login after completion

- Add SetupCompletionChecker component that monitors health status
- Automatically redirect to /login when server becomes healthy after setup
- Improves user experience by eliminating manual navigation step

aggregator-web/src/components/SetupCompletionChecker.tsx

@@ -0,0 +1,48 @@
+import React, { useEffect, useState } from 'react';
+import { useNavigate, useLocation } from 'react-router-dom';
+import { setupApi } from '@/lib/api';
+
+interface SetupCompletionCheckerProps {
+  children: React.ReactNode;
+}
+
+export const SetupCompletionChecker: React.FC<SetupCompletionCheckerProps> = ({ children }) => {
+  const [isSetupMode, setIsSetupMode] = useState<boolean | null>(null);
+  const navigate = useNavigate();
+  const location = useLocation();
+
+  useEffect(() => {
+    const checkSetupStatus = async () => {
+      try {
+        const data = await setupApi.checkHealth();
+
+        if (data.status === 'waiting for configuration') {
+          setIsSetupMode(true);
+        } else {
+          setIsSetupMode(false);
+        }
+      } catch (error) {
+        // If we can't reach the health endpoint, assume normal mode
+        setIsSetupMode(false);
+      }
+    };
+
+    checkSetupStatus();
+
+    // Check periodically for configuration changes
+    const interval = setInterval(checkSetupStatus, 3000);
+
+    return () => clearInterval(interval);
+  }, []);
+
+  // If we're on the setup page and server is now healthy, redirect to login
+  useEffect(() => {
+    if (isSetupMode === false && location.pathname === '/setup') {
+      console.log('Setup completed - redirecting to login');
+      navigate('/login', { replace: true });
+    }
+  }, [isSetupMode, location.pathname, navigate]);
+
+  // Always render children - this component only handles redirects
+  return <>{children}</>;
+};