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>

fee_specs.py

@@ -1,4 +1,4 @@
-"""期货手续费：优先 CTP 柜台费率，本地/AKShare 为离线兜底。"""
+"""期货手续费：仅 CTP 柜台同步入库，前端只读展示。"""
 import json
 import os
 import re
@@ -37,6 +37,26 @@ def _get_db():
     return connect_db()
 
 
+def get_setting(key: str, default: str = "") -> str:
+    conn = _get_db()
+    row = conn.execute("SELECT value FROM settings WHERE key=?", (key,)).fetchone()
+    conn.close()
+    if not row:
+        return default
+    return (row["value"] or default) if row["value"] is not None else default
+
+
+def set_setting(key: str, value: str) -> None:
+    conn = _get_db()
+    conn.execute(
+        """INSERT INTO settings (key, value) VALUES (?,?)
+           ON CONFLICT(key) DO UPDATE SET value=excluded.value""",
+        (key, value),
+    )
+    conn.commit()
+    conn.close()
+
+
 def get_fee_multiplier() -> float:
     conn = _get_db()
     row = conn.execute(
@@ -52,14 +72,20 @@ def get_fee_multiplier() -> float:
 
 
 def get_fee_source_mode() -> str:
-    """ctp=优先柜台同步费率；local=本地/AKShare 表。"""
+    """固定 CTP 柜台。"""
+    return "ctp"
+
+
+def purge_non_ctp_fee_rates() -> int:
+    """删除非 CTP 来源的费率缓存。"""
     conn = _get_db()
-    row = conn.execute(
-        "SELECT value FROM settings WHERE key='fee_source_mode'"
-    ).fetchone()
+    cur = conn.execute(
+        "DELETE FROM fee_rates WHERE COALESCE(source, '') != 'ctp'"
+    )
+    n = cur.rowcount
+    conn.commit()
     conn.close()
-    mode = (row["value"] if row else "ctp") or "ctp"
-    return mode if mode in ("ctp", "local") else "ctp"
+    return n
 
 
 def _row_to_spec(row, mult: int) -> dict:
@@ -84,46 +110,21 @@ def get_fee_spec(ths_code: str, *, trading_mode: str = "simulation") -> dict:
         return {**DEFAULT_FEE, "mult": spec["mult"], "product": "", "exchange": "", "source": "default"}
 
     mult = get_contract_spec(ths_code)["mult"]
-    source_mode = get_fee_source_mode()
     conn = _get_db()
-
-    if source_mode == "ctp":
-        row = conn.execute(
-            "SELECT * FROM fee_rates WHERE product=? AND source='ctp'",
-            (product,),
-        ).fetchone()
-        if not row:
-            row = conn.execute(
-                "SELECT * FROM fee_rates WHERE product=? ORDER BY CASE source WHEN 'ctp' THEN 0 ELSE 1 END",
-                (product,),
-            ).fetchone()
-        conn.close()
-        if row:
-            return _row_to_spec(row, mult)
-        # 按需向 CTP 查询
-        try:
-            from ctp_fee_sync import sync_fee_for_symbol
-            fields = sync_fee_for_symbol(trading_mode, ths_code)
-            if fields:
-                return {"product": product, **fields}
-        except Exception:
-            pass
-        conn = _get_db()
-        row = conn.execute(
-            "SELECT * FROM fee_rates WHERE product=?", (product,)
-        ).fetchone()
-        conn.close()
-        if row:
-            spec = _row_to_spec(row, mult)
-            spec["source"] = spec.get("source") or "local_fallback"
-            return spec
-    else:
-        row = conn.execute(
-            "SELECT * FROM fee_rates WHERE product=?", (product,)
-        ).fetchone()
-        conn.close()
-        if row:
-            return _row_to_spec(row, mult)
+    row = conn.execute(
+        "SELECT * FROM fee_rates WHERE product=? AND source='ctp'",
+        (product,),
+    ).fetchone()
+    conn.close()
+    if row:
+        return _row_to_spec(row, mult)
+    try:
+        from ctp_fee_sync import sync_fee_for_symbol
+        fields = sync_fee_for_symbol(trading_mode, ths_code)
+        if fields:
+            return {"product": product, **fields}
+    except Exception:
+        pass
 
     if product in _INDEX_PRODUCTS:
         return {
@@ -287,6 +288,16 @@ def load_fee_rates_from_json(path: Optional[str] = None) -> int:
     return count
 
 
+def list_ctp_fee_rates() -> list:
+    """手续费页：仅展示 CTP 同步结果。"""
+    conn = _get_db()
+    rows = conn.execute(
+        "SELECT * FROM fee_rates WHERE source='ctp' ORDER BY product"
+    ).fetchall()
+    conn.close()
+    return [dict(r) for r in rows]
+
+
 def list_all_fee_rates() -> list:
     conn = _get_db()
     rows = conn.execute(
@@ -297,28 +308,16 @@ def list_all_fee_rates() -> list:
 
 
 def list_fee_rates_for_ui() -> list:
-    """手续费页展示：CTP 模式下 ctp 来源优先排前。"""
-    rows = list_all_fee_rates()
-    if get_fee_source_mode() == "ctp":
-        rows.sort(
-            key=lambda r: (
-                0 if (r.get("source") or "") == "ctp" else 1,
-                r.get("product") or "",
-            )
-        )
-    return rows
+    return list_ctp_fee_rates()
 
 
 def count_fee_rates_by_source() -> dict[str, int]:
     conn = _get_db()
-    rows = conn.execute(
-        "SELECT source, COUNT(*) AS n FROM fee_rates GROUP BY source"
-    ).fetchall()
+    n = conn.execute(
+        "SELECT COUNT(*) FROM fee_rates WHERE source='ctp'"
+    ).fetchone()[0]
     conn.close()
-    out: dict[str, int] = {}
-    for row in rows:
-        out[str(row["source"] or "local")] = int(row["n"] or 0)
-    return out
+    return {"ctp": int(n or 0)}
 
 
 def upsert_fee_rate(product: str, fields: dict) -> None: