Fix positions and records pages hanging on load.

Stop blocking page render on full trading live rebuild and CTP trade sync; use cached snapshot and background prime instead.

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

app.py

@@ -1442,21 +1442,6 @@ def records():
 
     conn = get_db()
     ctp_sync_info = None
-    try:
-        from ctp_trade_sync import sync_trade_logs_from_ctp
-        from trading_context import get_account_capital, get_trading_mode
-        from vnpy_bridge import ctp_status
-
-        mode = get_trading_mode(get_setting)
-        if ctp_status(mode).get("connected"):
-            capital = get_account_capital(conn, get_setting)
-            ctp_sync_info = sync_trade_logs_from_ctp(
-                conn, mode, capital=capital, trading_mode=mode,
-            )
-            conn.commit()
-    except Exception as exc:
-        app.logger.warning("ctp trade sync on records page: %s", exc)
-
     sql = "SELECT * FROM review_records WHERE 1=1"
     params: list = []
     if start: