feat: 手续费仅CTP每日后台同步入库，前端只读展示

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

ctp_fee_worker.py

@@ -0,0 +1,90 @@
+"""CTP 手续费后台同步：每日一次写入数据库，前端只读展示。"""
+from __future__ import annotations
+
+import logging
+import threading
+import time
+from datetime import date, datetime
+from typing import Callable, Optional
+from zoneinfo import ZoneInfo
+
+logger = logging.getLogger(__name__)
+
+TZ = ZoneInfo("Asia/Shanghai")
+FEE_SYNC_KEY = "ctp_fee_last_sync"
+CHECK_INTERVAL_SEC = 3600
+_sync_lock = threading.Lock()
+
+
+def _today_str() -> str:
+    return datetime.now(TZ).date().isoformat()
+
+
+def get_fee_last_sync(get_setting: Callable[[str, str], str]) -> str:
+    return (get_setting(FEE_SYNC_KEY, "") or "").strip()
+
+
+def fees_synced_today(get_setting: Callable[[str, str], str]) -> bool:
+    last = get_fee_last_sync(get_setting)
+    return bool(last) and last[:10] == _today_str()
+
+
+def mark_fees_synced(set_setting: Callable[[str, str], None]) -> None:
+    set_setting(FEE_SYNC_KEY, datetime.now(TZ).isoformat(timespec="seconds"))
+
+
+def try_daily_ctp_fee_sync(
+    mode: str,
+    *,
+    get_setting: Callable[[str, str], str],
+    set_setting: Callable[[str, str], None],
+    force: bool = False,
+) -> tuple[int, str]:
+    """CTP 已连接且今日未同步时拉取费率入库；force=True 忽略日期限制。"""
+    if not force and fees_synced_today(get_setting):
+        return 0, "今日已从 CTP 同步过，无需重复（可点「立即同步」强制刷新）"
+
+    with _sync_lock:
+        if not force and fees_synced_today(get_setting):
+            return 0, "今日已从 CTP 同步过"
+
+        from ctp_fee_sync import sync_fees_from_ctp
+
+        count, msg = sync_fees_from_ctp(mode)
+        if count > 0:
+            mark_fees_synced(set_setting)
+            logger.info("CTP 手续费每日同步: %s", msg)
+        elif force:
+            logger.warning("CTP 手续费强制同步未写入: %s", msg)
+        return count, msg
+
+
+def start_ctp_fee_worker(
+    *,
+    get_mode_fn: Callable[[], str],
+    get_setting_fn: Callable[[str, str], str],
+    set_setting_fn: Callable[[str, str], None],
+    interval: int = CHECK_INTERVAL_SEC,
+) -> None:
+    """后台线程：每小时检查，CTP 已连接且当日未同步则自动同步。"""
+
+    def _loop() -> None:
+        time.sleep(20)
+        while True:
+            try:
+                from vnpy_bridge import ctp_status
+
+                mode = get_mode_fn()
+                st = ctp_status(mode)
+                if st.get("connected") and not fees_synced_today(get_setting_fn):
+                    try_daily_ctp_fee_sync(
+                        mode,
+                        get_setting=get_setting_fn,
+                        set_setting=set_setting_fn,
+                        force=False,
+                    )
+            except Exception as exc:
+                logger.warning("CTP fee worker: %s", exc)
+            time.sleep(max(300, interval))
+
+    threading.Thread(target=_loop, daemon=True, name="ctp-fee-worker").start()