feat: add Settings and Setup pages for user management

- Implemented Settings page for changing user passwords with validation and feedback.
- Created Setup page for initial admin account setup with form handling and navigation.
- Added API service layer for handling requests related to proxy hosts, remote servers, and import functionality.
- Introduced mock data for testing purposes and set up testing framework with vitest.
- Configured Tailwind CSS for styling and Vite for development and build processes.
- Added scripts for Dockerfile validation, Python syntax checking, and Sourcery integration.
- Implemented release and coverage scripts for better CI/CD practices.

frontend/src/components/SetupGuard.tsx

@@ -0,0 +1,38 @@
+import { useEffect } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { useQuery } from '@tanstack/react-query';
+import { getSetupStatus } from '../api/setup';
+
+interface SetupGuardProps {
+  children: React.ReactNode;
+}
+
+export const SetupGuard: React.FC<SetupGuardProps> = ({ children }) => {
+  const navigate = useNavigate();
+
+  const { data: status, isLoading } = useQuery({
+    queryKey: ['setupStatus'],
+    queryFn: getSetupStatus,
+    retry: false,
+  });
+
+  useEffect(() => {
+    if (status?.setupRequired) {
+      navigate('/setup');
+    }
+  }, [status, navigate]);
+
+  if (isLoading) {
+    return (
+      <div className="min-h-screen flex items-center justify-center bg-gray-100 dark:bg-gray-900">
+        <div className="text-blue-500">Loading...</div>
+      </div>
+    );
+  }
+
+  if (status?.setupRequired) {
+    return null; // Will redirect
+  }
+
+  return <>{children}</>;
+};