修复启动报错：expire_old_plans 在 init_db 前未定义

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

app.py

@@ -43,6 +43,21 @@ KLINE_CUTOFFS = ["平仓时间", "开仓时间", "当前时间"]
 def today_str() -> str:
     return datetime.now(TZ).date().isoformat()
 
+
+def expire_old_plans():
+    """当日结束后计划自动失效，保留历史。"""
+    today = today_str()
+    conn = get_db()
+    conn.execute(
+        "UPDATE order_plans SET status='expired' WHERE plan_date < ? AND status IN ('planned', 'active')",
+        (today,),
+    )
+    conn.execute(
+        "UPDATE order_plans SET plan_date=date(created_at) WHERE plan_date IS NULL OR plan_date=''"
+    )
+    conn.commit()
+    conn.close()
+
 # —————————————— 设置读写 ——————————————
 
 def get_db():
@@ -211,23 +226,6 @@ def fetch_price(ths_code: str, market_code: str = "", sina_code: str = "") -> Op
 
 # —————————————— 监控逻辑 ——————————————
 
-# —————————————— 开单计划（按日） ——————————————
-
-def expire_old_plans():
-    """当日结束后计划自动失效，保留历史。"""
-    today = today_str()
-    conn = get_db()
-    conn.execute(
-        "UPDATE order_plans SET status='expired' WHERE plan_date < ? AND status IN ('planned', 'active')",
-        (today,),
-    )
-    conn.execute(
-        "UPDATE order_plans SET plan_date=date(created_at) WHERE plan_date IS NULL OR plan_date=''"
-    )
-    conn.commit()
-    conn.close()
-
-
 def check_order_plans():
     expire_old_plans()
     today = today_str()