fix(gate_bot): write strategy snapshots when trend plans end

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

crypto_monitor_gate_bot/app.py

@@ -4774,11 +4774,15 @@ def _trend_finalize_plan(conn, row, result_label, exit_price, closed_at=None):
     except Exception:
         pass
     try:
-        cfg = app.extensions.get("strategy_trend_cfg") or {}
+        from strategy_trend_register import build_trend_config
+
+        cfg = app.extensions.get("strategy_trend_cfg") or build_trend_config(
+            sys.modules[__name__]
+        )
         closed = conn.execute(
             "SELECT * FROM trend_pullback_plans WHERE id=?", (plan_id,)
         ).fetchone()
-        if closed and cfg:
+        if closed:
             from strategy_snapshot_lib import save_trend_plan_snapshot
 
             save_trend_plan_snapshot(
@@ -8209,6 +8213,7 @@ def strategy_roll_page():
 
 
 from strategy_register import install_strategy_trading
+from strategy_trend_register import build_trend_config
 
 install_strategy_trading(
     app,
@@ -8216,6 +8221,7 @@ install_strategy_trading(
     app_module=sys.modules[__name__],
     trend_enabled=True,
 )
+app.extensions["strategy_trend_cfg"] = build_trend_config(sys.modules[__name__])
 
 _purge_key_monitors_if_full_margin()