fix

managers/storage.py

@@ -344,6 +344,18 @@ class PaymentStorage:
             payments.pop(payment_id, None)
             await asyncio.to_thread(self._save_sync, payments)
 
+    async def pop(self, payment_id: str) -> Optional[dict]:
+        """Get and mark payment as processed. Returns None if not found or already processed."""
+        async with self._lock:
+            payments = await asyncio.to_thread(self._load_sync)
+            data = payments.get(payment_id)
+            if data is None or data.get("processed"):
+                return None
+            payments[payment_id]["processed"] = True
+            payments[payment_id]["processed_at"] = datetime.now().isoformat(timespec="seconds")
+            await asyncio.to_thread(self._save_sync, payments)
+            return data
+
     async def get_by_user(self, user_id: int) -> Optional[dict]:
         async with self._lock:
             payments = await asyncio.to_thread(self._load_sync)