Add no-cache headers to index.html via custom Vite plugin

• Create noCachePlugin for Vite
• Add cache-control meta tags
• Inject headers into index.html
• Prevent browser caching issues

lightrag_webui/vite.config.ts

@@ -4,9 +4,21 @@ import { webuiPrefix } from '@/lib/constants'
 import react from '@vitejs/plugin-react-swc'
 import tailwindcss from '@tailwindcss/vite'
 
+// A custom Vite plugin to add cache-control headers to index.html
+const noCachePlugin = () => ({
+  name: 'no-cache',
+  transformIndexHtml(html: string) {
+    const cacheControlMeta = `
+    <meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate" />
+    <meta http-equiv="Pragma" content="no-cache" />
+    <meta http-equiv="Expires" content="0" />`;
+    return html.replace('</head>', `${cacheControlMeta}\n</head>`);
+  },
+});
+
 // https://vite.dev/config/
 export default defineConfig({
-  plugins: [react(), tailwindcss()],
+  plugins: [react(), tailwindcss(), noCachePlugin()],
   resolve: {
     alias: {
       '@': path.resolve(__dirname, './src')