fix(data): catch http.client transport errors in StockTwits

A truncated/incomplete chunked response raises http.client exceptions
(IncompleteRead/BadStatusLine) that are not OSErrors, so they bypassed the
existing handler and crashed the analysis. Broaden the catch so the fetch
degrades to its placeholder string like every other transport failure.

tradingagents/dataflows/stocktwits.py

@@ -14,11 +14,9 @@ network call succeeded.
 
 from __future__ import annotations
 
+import http.client
 import json
 import logging
-from datetime import datetime, timezone
-from typing import Optional
-from urllib.error import HTTPError, URLError
 from urllib.request import Request, urlopen
 
 logger = logging.getLogger(__name__)
@@ -40,7 +38,9 @@ def fetch_stocktwits_messages(ticker: str, limit: int = 30, timeout: float = 10.
     try:
         with urlopen(req, timeout=timeout) as resp:
             data = json.loads(resp.read())
-    except (HTTPError, URLError, json.JSONDecodeError, TimeoutError) as exc:
+    except (OSError, http.client.HTTPException, json.JSONDecodeError) as exc:
+        # OSError covers URLError/TimeoutError/connection resets; HTTPException
+        # covers chunked-transfer errors (IncompleteRead/BadStatusLine, #1024).
         logger.warning("StockTwits fetch failed for %s: %s", ticker, exc)
         return f"<stocktwits unavailable: {type(exc).__name__}>"