Isolate CTP in worker process and improve strategy roll UX.

Split vn.py into qihuo-ctp worker with IPC client bridge, keep CTP connected during breaks with cached account fallback, speed up strategy page loads, and allow off-session breakout roll submissions.

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

sl_tp_guard.py

@@ -60,13 +60,47 @@ MONITOR_ORDER_COLUMNS = (
 
 TRADE_RESULTS = ("止损", "止盈", "移动止盈", "保本止盈", "手动平仓")
 
+_MONITOR_COLUMNS_READY = False
+_MONITOR_COLUMNS_LOCK = threading.Lock()
 
-def ensure_monitor_order_columns(conn) -> None:
-    for sql in MONITOR_ORDER_COLUMNS:
-        try:
-            conn.execute(sql)
-        except Exception:
-            pass
+
+def _monitor_columns_exist(conn) -> bool:
+    try:
+        rows = conn.execute("PRAGMA table_info(trade_order_monitors)").fetchall()
+        cols = set()
+        for r in rows:
+            if isinstance(r, dict):
+                cols.add(r.get("name") or "")
+            else:
+                cols.add(r[1])
+        return "open_fee" in cols
+    except Exception:
+        return False
+
+
+def ensure_monitor_order_columns(conn, *, migrate: bool = False) -> None:
+    """列齐全后不再 ALTER，避免 worker 每次请求锁 SQLite。"""
+    global _MONITOR_COLUMNS_READY
+    if _MONITOR_COLUMNS_READY:
+        return
+    with _MONITOR_COLUMNS_LOCK:
+        if _MONITOR_COLUMNS_READY:
+            return
+        if _monitor_columns_exist(conn):
+            _MONITOR_COLUMNS_READY = True
+            return
+        if not migrate:
+            return
+        for sql in MONITOR_ORDER_COLUMNS:
+            try:
+                conn.execute(sql)
+                conn.commit()
+            except Exception:
+                try:
+                    conn.rollback()
+                except Exception:
+                    pass
+        _MONITOR_COLUMNS_READY = True
 
 
 def _tick_size(ths_code: str) -> float: