fix: enable multimodal processing by removing early message check

- Commented out early 'if not update.message' validation at line 723
- This was preventing photo and voice messages from being processed
- process_photo() and process_voice() functions are already implemented
- Now photo/voice updates can reach multimodal handlers before text validation
- Fixes issue where bots showed placeholder messages instead of processing media

gateway-bot/http_api.py

@@ -720,8 +720,10 @@ async def handle_telegram_webhook(
     Returns:
         Dict з результатом обробки
     """
-    if not update.message:
-        raise HTTPException(status_code=400, detail="No message in update")
+    # Allow updates without message if they contain photo/voice
+    # The actual message validation happens after multimodal checks
+    # if not update.message:
+    #     raise HTTPException(status_code=400, detail="No message in update")
     
     # Extract message details
     from_user = update.message.get("from", {})