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:

install_trading.py

@@ -1822,8 +1822,7 @@ def install_trading(app, *, login_required, require_nav, get_db, get_setting, se
 
     def _refresh_trading_live_snapshot(*, fast: bool = False) -> dict:
         mode = get_trading_mode(get_setting)
-        if ctp_status(mode).get("connected"):
+        if ctp_status(mode).get("connected") and not fast:
-            if not fast or trading_state.sync_state == "idle":
             try:
                 with _ctp_td_lock:
                     get_bridge().calibrate_trading_state()
@@ -2077,12 +2076,27 @@ def install_trading(app, *, login_required, require_nav, get_db, get_setting, se
                 _schedule_recommend_refresh()
             ctp_connected = is_ctp_connected(get_setting)
             margin_rec = small_account_margin_recommendations()
-            bootstrap_live: dict = {}
+            bootstrap_live = position_hub.get_snapshot()
-            try:
+            if not bootstrap_live:
-                bootstrap_live = _build_trading_live_payload(conn, fast=True)
+                bootstrap_live = {
-                position_hub.set_snapshot(bootstrap_live)
+                    "ok": True,
-            except Exception as exc:
+                    "rows": [],
-                logger.debug("positions page bootstrap: %s", exc)
+                    "active_orders": [],
+                    "pending_orders": [],
+                    "capital": capital,
+                    "ctp_status": dict(ctp_st),
+                    "risk_status": risk,
+                    "trading_session": is_trading_session(),
+                    "night_session": is_night_trading_session(),
+                    "session_clock": trading_session_clock(),
+                    "sync_state": trading_state.sync_state,
+                    "sync_label": trading_state.sync_label(),
+                }
+            else:
+                bootstrap_live = dict(bootstrap_live)
+                bootstrap_live.setdefault("capital", capital)
+                bootstrap_live.setdefault("risk_status", risk)
+                bootstrap_live["ctp_status"] = dict(ctp_st)
             return render_template(
                 "trade.html",
                 trading_mode=mode,
@@ -3878,7 +3892,11 @@ def install_trading(app, *, login_required, require_nav, get_db, get_setting, se
     def _init_tables(conn):
         init_strategy_tables(conn)
 
-    _prime_position_snapshot()
+    threading.Thread(
+        target=_prime_position_snapshot,
+        daemon=True,
+        name="position-prime",
+    ).start()
 
     _pos_refresh_tick = {"n": 0}
     _last_full_calibrate = {"ts": 0.0}