fix: run_mr_backtest tp_pct=None兜底默认0.18; evolution_api baseline改为v_weak/v_oversold, get_health_trend默认v_weak

evolution/evolution_api.py

@@ -40,9 +40,9 @@ def get_evolution_dashboard():
     """).fetchall():
         evolution.append(dict(r))
     
-    # 当前策略基线
+    # 当前策略基线（2026-08-11: 改为当前实盘 v_weak + 新策略 v_oversold）
     baseline = {}
-    for v in ['v_next4', 'v_next3', 'v8.1']:
+    for v in ['v_weak', 'v_oversold']:
         r = conn.execute("""
             SELECT results_json FROM strategy_research 
             WHERE version=? AND period_tag='5y' ORDER BY id DESC LIMIT 1
@@ -174,7 +174,7 @@ def get_combo_dashboard():
     }
 
 
-def get_health_trend(version='v_next4', days=30):
+def get_health_trend(version='v_weak', days=30):
     """健康度趋势"""
     conn = sqlite3.connect(DB)
     conn.row_factory = sqlite3.Row