Add digital catalog with shareable flipbook and ktg.montzar.ir deploy files.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/qr.ts

@@ -0,0 +1,10 @@
+import QRCode from "qrcode";
+
+export async function makeQrPng(text: string): Promise<Buffer> {
+  return QRCode.toBuffer(text, {
+    type: "png",
+    width: 512,
+    margin: 1,
+    errorCorrectionLevel: "M",
+  });
+}