fix: 手续费同步改为后台执行，避免阻塞 Web 请求

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

ctp_fee_worker.py

@@ -16,6 +16,10 @@ CHECK_INTERVAL_SEC = 3600
 _sync_lock = threading.Lock()
 
 
+def fee_sync_in_progress() -> bool:
+    return _sync_lock.locked()
+
+
 def _today_str() -> str:
     return datetime.now(TZ).date().isoformat()
 
@@ -48,17 +52,49 @@ def try_daily_ctp_fee_sync(
         if not force and fees_synced_today(get_setting):
             return 0, "今日已从 CTP 同步过"
 
+        t0 = time.monotonic()
         from ctp_fee_sync import sync_fees_from_ctp
 
         count, msg = sync_fees_from_ctp(mode)
+        elapsed = time.monotonic() - t0
         if count > 0:
             mark_fees_synced(set_setting)
+            msg = f"{msg}（耗时 {elapsed:.1f} 秒）"
             logger.info("CTP 手续费每日同步: %s", msg)
         elif force:
+            msg = f"{msg}（耗时 {elapsed:.1f} 秒）"
             logger.warning("CTP 手续费强制同步未写入: %s", msg)
         return count, msg
 
 
+def schedule_ctp_fee_sync(
+    mode: str,
+    *,
+    get_setting: Callable[[str, str], str],
+    set_setting: Callable[[str, str], None],
+    force: bool = False,
+) -> tuple[bool, str]:
+    """后台线程同步，避免阻塞 Web 请求。"""
+    if _sync_lock.locked():
+        return False, "手续费同步进行中，请稍后再试（约 1～3 分钟）"
+
+    def _run() -> None:
+        try:
+            try_daily_ctp_fee_sync(
+                mode,
+                get_setting=get_setting,
+                set_setting=set_setting,
+                force=force,
+            )
+        except Exception as exc:
+            logger.exception("CTP 手续费后台同步失败: %s", exc)
+
+    threading.Thread(target=_run, daemon=True, name="ctp-fee-sync-run").start()
+    if force:
+        return True, "已在后台开始同步，约 30 秒～2 分钟完成，请稍后刷新本页查看"
+    return True, "已在后台检查同步，请稍后刷新本页"
+
+
 def start_ctp_fee_worker(
     *,
     get_mode_fn: Callable[[], str],