feat: 行情K线优先CTP tick聚合，修复手续费同步主力列表解析

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

ctp_fee_sync.py

@@ -35,6 +35,28 @@ def ctp_commission_to_fee_fields(data: dict, ths_code: str) -> dict:
     }
 
 
+def _collect_main_ths_codes() -> list[str]:
+    """从主力列表收集同花顺合约代码（供 CTP 手续费查询）。"""
+    from datetime import date
+
+    from symbols import PRODUCTS, build_ths_code, list_main_contracts_grouped
+
+    symbols: list[str] = []
+    for group in list_main_contracts_grouped():
+        for item in group.get("items") or []:
+            ths = (item.get("ths_code") or item.get("ths") or item.get("code") or "").strip()
+            if ths and not ths.endswith("888"):
+                symbols.append(ths)
+
+    if symbols:
+        return symbols
+
+    today = date.today()
+    for p in PRODUCTS:
+        symbols.append(build_ths_code(p, today.year, today.month))
+    return symbols
+
+
 def sync_fees_from_ctp(mode: str, *, max_symbols: int = 80) -> tuple[int, str]:
     """CTP 已连接时，按主力合约查询手续费并写入 fee_rates（source=ctp）。"""
     bridge = get_bridge()
@@ -45,15 +67,7 @@ def sync_fees_from_ctp(mode: str, *, max_symbols: int = 80) -> tuple[int, str]:
     if not bridge.ping():
         return 0, "CTP 连接无效，请重连"
 
-    from symbols import list_main_contracts_grouped
-
-    mains = list_main_contracts_grouped()
-    symbols: list[str] = []
-    for g in mains:
-        ths = (g.get("ths") or g.get("code") or "").strip()
-        if ths:
-            symbols.append(ths)
-    symbols = symbols[:max_symbols]
+    symbols = _collect_main_ths_codes()[:max_symbols]
 
     if not symbols:
         return 0, "无主力合约列表"