修复页面握库拉余额导致 database is locked 整页 500。

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

app.py

@@ -1619,22 +1619,38 @@ def account_risk_status(conn):
         ensure_account_risk_schema,
     )
 
-    ensure_account_risk_schema(conn)
     now = app_now()
-    st = compute_account_risk_status(
-        conn,
-        trading_day=get_trading_day(),
-        now=now,
-        fmt_local_ms=ms_to_app_local_str,
-    )
-    st = enrich_risk_status_countdown(st, now=now, daily_reset_hour=TRADING_DAY_RESET_HOUR)
-    from lib.trade.trade_labels_lib import count_position_limit_active_monitors
+    try:
+        ensure_account_risk_schema(conn)
+        st = compute_account_risk_status(
+            conn,
+            trading_day=get_trading_day(),
+            now=now,
+            fmt_local_ms=ms_to_app_local_str,
+        )
+        st = enrich_risk_status_countdown(st, now=now, daily_reset_hour=TRADING_DAY_RESET_HOUR)
+        from lib.trade.trade_labels_lib import count_position_limit_active_monitors
 
-    return apply_position_limit_risk(
-        st,
-        count_position_limit_active_monitors(conn),
-        max_active_positions=MAX_ACTIVE_POSITIONS,
-    )
+        return apply_position_limit_risk(
+            st,
+            count_position_limit_active_monitors(conn),
+            max_active_positions=MAX_ACTIVE_POSITIONS,
+        )
+    except Exception as e:
+        print(f"[account_risk_status] {e}", flush=True)
+        return {
+            "enabled": True,
+            "status": "normal",
+            "status_label": "正常",
+            "can_trade": True,
+            "reason": "",
+            "cooloff_until_ms": None,
+            "cooloff_until": None,
+            "manual_close_count": 0,
+            "daily_loss_count": 0,
+            "daily_frozen": False,
+            "freeze_remaining_sec": 0,
+        }
 
 
 def hub_user_initiated_close(
@@ -3863,6 +3879,11 @@ def render_main_page(page="options", embed_mode=None):
     conn = get_db()
     session_row = ensure_session(conn, trading_day)
     local_current_capital = float(session_row["current_capital"])
+    try:
+        conn.commit()
+    except Exception:
+        pass
+    conn.close()
     from lib.instance.instance_embed_context_lib import (
         embed_render_plan,
         minimal_stats_bundle,
@@ -3875,6 +3896,7 @@ def render_main_page(page="options", embed_mode=None):
     )
 
     plan = embed_render_plan(page, embed_mode)
+    # 拉交易所余额前不持库连接,避免 database is locked → 页面 500
     if plan.exchange_capitals:
         funding_capital, trading_capital = get_exchange_capitals()
     else:
@@ -3938,6 +3960,7 @@ def render_main_page(page="options", embed_mode=None):
             options_margin_mode = "coin"
             options_underly = "ETH"
     recommended_capital = get_recommended_capital(capital_for_sizing)
+    conn = get_db()
     key_list = (
         conn.execute("SELECT * FROM key_monitors").fetchall() if plan.key_list else []
     )
@@ -4328,7 +4351,13 @@ def api_account_snapshot():
     conn = get_db()
     session_row = ensure_session(conn, trading_day)
     local_current_capital = float(session_row["current_capital"])
+    try:
+        conn.commit()
+    except Exception:
+        pass
+    conn.close()
     force_refresh = (request.args.get("force") or "").strip().lower() in ("1", "true", "yes")
+    # 拉交易所余额前不持库连接
     funding_capital, trading_capital = get_exchange_capitals(force=force_refresh)
     funding_usdt = round(funding_capital, FUNDS_DECIMALS) if funding_capital is not None else None
     # 顶栏只展示交易所余额;勿用会话资金回退(避免模拟盘 30U 残留到实盘)
@@ -4372,6 +4401,7 @@ def api_account_snapshot():
             options_margin_mode = "coin"
             options_underly = "ETH"
     recommended_capital = get_recommended_capital(capital_for_sizing)
+    conn = get_db()
     from lib.trade.trade_labels_lib import count_position_limit_active_monitors
 
     position_limit_count = count_position_limit_active_monitors(conn)