Enhance i18n configuration with synchronous loading and enable suspense for improved rendering

Refactor App component to include loading fallback for i18next suspense

frontend/src/App.tsx

@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { Suspense } from 'react';
 import { RainbowThemeProvider } from './components/shared/RainbowThemeProvider';
 import { FileContextProvider } from './contexts/FileContext';
 import { FilesModalProvider } from './contexts/FilesModalContext';
@@ -8,14 +8,30 @@ import HomePage from './pages/HomePage';
 import './styles/tailwind.css';
 import './index.css';
 
+// Loading component for i18next suspense
+const LoadingFallback = () => (
+  <div style={{
+    display: 'flex',
+    justifyContent: 'center',
+    alignItems: 'center',
+    height: '100vh',
+    fontSize: '18px',
+    color: '#666'
+  }}>
+    Loading...
+  </div>
+);
+
 export default function App() {
   return (
-    <RainbowThemeProvider>
-      <FileContextProvider enableUrlSync={true} enablePersistence={true}>
-        <FilesModalProvider>
-          <HomePage />
-        </FilesModalProvider>
-      </FileContextProvider>
-    </RainbowThemeProvider>
+    <Suspense fallback={<LoadingFallback />}>
+      <RainbowThemeProvider>
+        <FileContextProvider enableUrlSync={true} enablePersistence={true}>
+          <FilesModalProvider>
+            <HomePage />
+          </FilesModalProvider>
+        </FileContextProvider>
+      </RainbowThemeProvider>
+    </Suspense>
   );
 }

frontend/src/hooks/useToolManagement.tsx

@@ -118,7 +118,7 @@ interface ToolManagementResult {
 }
 
 export const useToolManagement = (): ToolManagementResult => {
-  const { t, ready } = useTranslation();
+  const { t } = useTranslation();
 
   const [selectedToolKey, setSelectedToolKey] = useState<string | null>(null);
   const [toolSelectedFileIds, setToolSelectedFileIds] = useState<string[]>([]);
@@ -136,10 +136,6 @@ export const useToolManagement = (): ToolManagementResult => {
   }, [endpointsLoading, endpointStatus]);
 
   const toolRegistry: ToolRegistry = useMemo(() => {
-    if (!ready) {
-      return {};
-    }
-    
     const availableTools: ToolRegistry = {};
     Object.keys(toolDefinitions).forEach(toolKey => {
       if (isToolAvailable(toolKey)) {
@@ -151,7 +147,7 @@ export const useToolManagement = (): ToolManagementResult => {
       }
     });
     return availableTools;
-  }, [t, isToolAvailable, ready]);
+  }, [t, isToolAvailable]);
 
   useEffect(() => {
     if (!endpointsLoading && selectedToolKey && !toolRegistry[selectedToolKey]) {

frontend/src/i18n.ts

@@ -61,6 +61,9 @@ i18n
     nonExplicitSupportedLngs: false,
     debug: process.env.NODE_ENV === 'development',
     
+    // Ensure synchronous loading to prevent timing issues
+    initImmediate: false,
+    
     interpolation: {
       escapeValue: false, // React already escapes values
     },
@@ -75,16 +78,15 @@ i18n
     },
     
     react: {
-      useSuspense: false, // Set to false to avoid suspense issues with SSR
+      useSuspense: true, // Enable suspense to prevent premature rendering
+      bindI18n: 'languageChanged loaded',
+      bindI18nStore: 'added removed',
+      transEmptyNodeValue: '', // Return empty string for missing keys instead of key name
+      transSupportBasicHtmlNodes: true,
+      transKeepBasicHtmlNodesFor: ['br', 'strong', 'i', 'p'],
     },
   });
 
-// Map base language codes to specific locales
-i18n.services.languageUtils.formatLanguageCode = (lng) => {
-  if (lng === 'en') return 'en-GB';
-  return lng;
-};
-
 // Set document direction based on language
 i18n.on('languageChanged', (lng) => {
   const isRTL = rtlLanguages.includes(lng);