fix(authority): 系统仓位含'系统按'永久保护(修复reassessed_at=None时权威失效)

mofin_db.py

@@ -1720,25 +1720,45 @@ def write_holding_strategy(conn, code: str, name: str, data: dict,
                 pass
         # ── 策略参数权威保护（2026-07-27 老爸：技术路径每2分钟覆写12维的Zone/SL/TP/Position→RR波动→盯盘和XMPP不一致）──
         # 新鲜(<20h)12维分析的技术参数+仓位不允许被技术路径覆写。
-        if source_trigger in _TECHNICAL_PATHS and _old_ra:
-            try:
-                from datetime import datetime as _ddt3, timedelta as _dtd3
-                _ra_dt3 = _ddt3.fromisoformat(str(_old_ra)[:19])
-                if (_ddt3.now() - _ra_dt3) < _dtd3(hours=20):
-                    _old_params = conn.execute(
-                        "SELECT entry_low, entry_high, stop_loss, take_profit, position_advice FROM holding_strategies WHERE code=? AND status='active'",
-                        (code,)).fetchone()
-                    if _old_params:
-                        _keys = ['entry_low','entry_high','stop_loss','take_profit','position_advice']
-                        _vals = [v if v else '' for v in _old_params]
-                        for i, k in enumerate(_keys):
-                            if i < 4 and float(_vals[i] or 0) > 0:
-                                data[k] = float(_vals[i])
-                            elif i == 4 and str(_vals[i]).strip():
-                                data[k] = str(_vals[i])
-                        print(f"  [AUTHORITY-PARAM] {code} 保留12维参数(区{_vals[0]}~{_vals[1]} 损{_vals[2]} 盈{_vals[3]} pos={_vals[4]})", flush=True)
-            except Exception:
-                pass
+        # 2026-07-27 坑：_old_ra=None 时权威保护永不触发（很多股票的reassessed_at为空），
+        # 导致系统自动计算的仓位被反复踩回"中等仓位"。加入兜底：仓位含"%（系统按"即永保。
+        if source_trigger in _TECHNICAL_PATHS:
+            # 兜底：系统自动计算的仓位永久保护（不含 %（系统按 的不保护，即只有 LLM 仓和系统仓被保护）
+            _old_pos = conn.execute(
+                "SELECT position_advice FROM holding_strategies WHERE code=? AND status='active'",
+                (code,)).fetchone()
+            _old_pos_val = (_old_pos[0] or '') if _old_pos else ''
+            if _old_pos_val and '系统按' in str(_old_pos_val):
+                data['position_advice'] = _old_pos_val
+                # 被保护仓位触发时顺便保护参数（无论 _old_ra 是否空）
+                _op = conn.execute(
+                    "SELECT entry_low, entry_high, stop_loss, take_profit FROM holding_strategies WHERE code=? AND status='active'",
+                    (code,)).fetchone()
+                if _op and float(_op[0] or 0) > 0:
+                    data['entry_low'] = float(_op[0])
+                    data['entry_high'] = float(_op[1])
+                    data['stop_loss'] = float(_op[2])
+                    data['take_profit'] = float(_op[3])
+                print(f"  [AUTHORITY-POS] {code} 保护系统仓位'{_old_pos_val[:30]}'", flush=True)
+            elif _old_ra:
+                try:
+                    from datetime import datetime as _ddt3, timedelta as _dtd3
+                    _ra_dt3 = _ddt3.fromisoformat(str(_old_ra)[:19])
+                    if (_ddt3.now() - _ra_dt3) < _dtd3(hours=20):
+                        _old_params = conn.execute(
+                            "SELECT entry_low, entry_high, stop_loss, take_profit, position_advice FROM holding_strategies WHERE code=? AND status='active'",
+                            (code,)).fetchone()
+                        if _old_params:
+                            _keys = ['entry_low','entry_high','stop_loss','take_profit','position_advice']
+                            _vals = [v if v else '' for v in _old_params]
+                            for i, k in enumerate(_keys):
+                                if i < 4 and float(_vals[i] or 0) > 0:
+                                    data[k] = float(_vals[i])
+                                elif i == 4 and str(_vals[i]).strip():
+                                    data[k] = str(_vals[i])
+                            print(f"  [AUTHORITY-PARAM] {code} 保留12维参数(区{_vals[0]}~{_vals[1]} 损{_vals[2]} 盈{_vals[3]} pos={_vals[4]})", flush=True)
+                except Exception:
+                    pass
         # ── action 权限保护（与信号同一权威层级，2026-07-22）──
         # 技术路径不得覆盖新鲜(<20h)12维 action。
         # 根治：技术路径写的"盈亏比不足1:1.5不建议买入"旧 action 与12维买入分析同框矛盾。