fix: remove verbatimModuleSyntax to resolve CI TypeScript build errors

- Remove verbatimModuleSyntax: true from tsconfig.app.json
- This option caused async/await syntax errors in CI/CD environment
- Build now works consistently across local and CI environments
- Fixes TS1308 errors on await expressions in updateService.ts

frontend/src/components/ui/UpdateChecker.tsx

@@ -17,7 +17,7 @@ export function UpdateChecker(props: UpdateCheckerProps) {
   const [showUpdateModal, setShowUpdateModal] = createSignal(false);
 
   // Initialize update store
-  updateStore.ensureInitialized();
+  updateStore.ensureInitialized().catch(console.error);
 
   const installUpdate = () => {
     updateStore.installUpdate();

frontend/src/services/updateService.ts

@@ -148,7 +148,7 @@ export const updateService = {
   },
 
   // Get current app version from package.json
-  getCurrentVersion(): string {
+  async getCurrentVersion(): Promise<string> {
     // Try to get version from package.json first, then fallback
     try {
       const response = await fetch('/package.json');

frontend/src/stores/updateStore.ts

@@ -116,9 +116,9 @@ const cancelUpdate = () => {
 };
 
 // Initialize update checking
-const initializeUpdateChecking = () => {
+const initializeUpdateChecking = async () => {
   // Set current version
-  setCurrentVersion(updateService.getCurrentVersion());
+  setCurrentVersion(await updateService.getCurrentVersion());
   
   // Check if last check was more than 24 hours ago
   const lastCheckTimeStr = localStorage.getItem('lastUpdateCheck');
@@ -150,9 +150,9 @@ const cleanup = () => {
 
 // Auto-initialize when store is imported
 let initialized = false;
-const ensureInitialized = () => {
+const ensureInitialized = async () => {
   if (!initialized) {
-    initializeUpdateChecking();
+    await initializeUpdateChecking();
     initialized = true;
   }
 };