feat(frontend): wa-sqlite memory-only + Factureaza + Vite polling + Appointments + Catalog

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/main.js

@@ -14,8 +14,13 @@ app.use(pinia)
 app.use(router)
 
 const auth = useAuthStore()
-if (auth.isAuthenticated) {
-  initDatabase().then(() => syncEngine.fullSync())
+
+async function bootstrap() {
+  if (auth.isAuthenticated) {
+    await initDatabase()
+    syncEngine.fullSync().catch(() => {})
+  }
+  app.mount('#app')
 }
 
-app.mount('#app')
+bootstrap()