feat: implement bulk ACL application feature for efficient access list management across multiple proxy hosts

feat: add modular Security Dashboard implementation plan with environment-driven security service activation
fix: update go.mod and go.sum for dependency version upgrades and optimizations
feat: enable gzip compression for API responses to reduce payload size
fix: optimize SQLite connection settings for better performance and concurrency
refactor: enhance RequireAuth component with consistent loading overlay
feat: configure global query client with optimized defaults for performance in main.tsx
refactor: replace health check useEffect with React Query for improved caching and auto-refresh
build: add code splitting in vite.config.ts for better caching and parallel loading

frontend/src/components/RequireAuth.tsx

@@ -1,13 +1,14 @@
 import React from 'react';
 import { Navigate, useLocation } from 'react-router-dom';
 import { useAuth } from '../hooks/useAuth';
+import { LoadingOverlay } from './LoadingStates';
 
 const RequireAuth: React.FC<{ children: React.ReactNode }> = ({ children }) => {
   const { isAuthenticated, isLoading } = useAuth();
   const location = useLocation();
 
   if (isLoading) {
-    return <div>Loading...</div>; // Or a spinner
+    return <LoadingOverlay message="Authenticating..." />;  // Consistent loading UX
   }
 
   if (!isAuthenticated) {