fix(pwa): show install prompt only once

src/lib/chat/pwa_install_prompt.ts

@@ -0,0 +1,12 @@
+"use client";
+
+import { AppStorage } from "@/data/storage/app/app_storage";
+
+export async function canShowPwaInstallPromptOnce(): Promise<boolean> {
+  const result = await AppStorage.canShowPwaDialog();
+  return result.success && result.data;
+}
+
+export function recordPwaInstallPromptShown(): Promise<unknown> {
+  return AppStorage.recordPwaDialogShown();
+}