fix: hot-reload trade direction/whitelist on env save without forced restart.

EOF

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

crypto_monitor_gate/app.py

@@ -401,6 +401,17 @@ AUTO_TRANSFER_BJ_HOUR = int(os.getenv("AUTO_TRANSFER_BJ_HOUR", "8"))
 POSITION_SIZING_MODE = load_position_sizing_mode()
 KEY_AUTO_ORDER_ENABLED = load_key_auto_order_enabled()
 TRADE_POLICY = load_trade_policy()
+
+
+def _reload_trade_policy_from_env(changed_keys=None):
+    """env 保存后热更新方向/白名单策略(无需重启)."""
+    global TRADE_POLICY
+    keys = set(changed_keys or [])
+    from lib.env.env_schema import TRADE_POLICY_ENV_KEYS
+
+    if keys and not keys.intersection(TRADE_POLICY_ENV_KEYS):
+        return
+    TRADE_POLICY = load_trade_policy()
 WECHAT_TIMEOUT_SECONDS = int(os.getenv("WECHAT_TIMEOUT_SECONDS", "10"))
 AI_TIMEOUT_SECONDS = int(os.getenv("AI_TIMEOUT_SECONDS", "120"))
 MONITOR_POLL_SECONDS = int(os.getenv("MONITOR_POLL_SECONDS", "3"))
@@ -9895,6 +9906,7 @@ try:
         exchange_key="gate",
         username=USERNAME,
         password=PASSWORD,
+        on_env_changed=lambda keys: _reload_trade_policy_from_env(keys),
     )
 except Exception as _settings_err:
     print(f"[instance_settings] gate: {_settings_err}")