fix: 补回 _benchmark_annual/_get_benchmarks 函数定义(此前被guard回滚丢失,仅剩调用处导致500)

server.py

@@ -90,6 +90,45 @@ def _compute_regime_winrates_cached(pt, _approx_univ):
         pass
     return _regime_winrates
 
+def _benchmark_annual(period_days, market='a'):
+    """大盘年化基准：market_regime 指数 close，近 period_days 天涨幅年化（2026-08-15 淘汰策略用）"""
+    try:
+        import sqlite3 as _sq
+        from datetime import datetime as _dt, timedelta as _td
+        _c = _sq.connect(str(DATA_DIR / "mofin.db"), timeout=5)
+        _cutoff = (_dt.now() - _td(days=period_days)).strftime("%Y-%m-%d")
+        _last = _c.execute(
+            "SELECT close FROM market_regime WHERE market=? AND close IS NOT NULL ORDER BY date DESC LIMIT 1",
+            (market,)).fetchone()
+        _base = _c.execute(
+            "SELECT close FROM market_regime WHERE market=? AND close IS NOT NULL AND date>=? ORDER BY date LIMIT 1",
+            (market, _cutoff)).fetchone()
+        _c.close()
+        if not _last or not _base or not _base[0]:
+            return None
+        _pct = (_last[0] / _base[0] - 1) * 100
+        _yrs = period_days / 365.0
+        if _pct <= -100:
+            return None
+        return round(((1 + _pct / 100) ** (1 / _yrs) - 1) * 100, 1)
+    except Exception:
+        return None
+
+
+_BENCH_2Y = None
+_BENCH_10Y = None
+
+
+def _get_benchmarks():
+    """取大盘基准（模块级缓存）"""
+    global _BENCH_2Y, _BENCH_10Y
+    if _BENCH_2Y is None:
+        _BENCH_2Y = _benchmark_annual(730)
+    if _BENCH_10Y is None:
+        _BENCH_10Y = _benchmark_annual(3650)
+    return _BENCH_2Y, _BENCH_10Y
+
+
 def _chk_http(host, port, path, timeout=3):
     try:
         url = f"http://{host}:{port}{path}"