Remove Settings and Setup pages along with their tests and related API services

- Deleted Settings.tsx and Setup.tsx pages, which included functionality for changing passwords and setting up an admin account.
- Removed associated test files for Setup page.
- Eliminated API service definitions related to proxy hosts, remote servers, import functionality, and health checks.
- Cleaned up mock data and test setup files.
- Removed configuration files for TypeScript, Vite, and Tailwind CSS.
- Deleted scripts for testing coverage, release management, Dockerfile validation, and Python compilation checks.
- Removed Sourcery pre-commit wrapper script.

frontend/src/components/SetupGuard.tsx

@@ -1,38 +0,0 @@
-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}</>;
-};