cash/总资产循环依赖修复

问题：price_monitor从strategy_staleness_report读cash→
stale_report由stale_push_wlin从portfolio.json写cash→
循环依赖导致cash值被污染(92,678→正确的应是113,240)

修复：
1. price_monitor改成优先用available_cash+frozen_cash字段
   （来自Dad截图确认值），不再从stale_report读
2. portfolio.json清理重复字段，统一用available_cash+frozen_cash
3. total_assets = total_market_value + available + frozen
4. 正确的数：市值835,552+可用73,758+冻结39,481=总资产948,792

price_monitor.py

@@ -206,24 +206,26 @@ def refresh_data_prices():
             h.get('shares', 0) * h.get('price', 0)
             for h in pf.get('holdings', [])
         )
-        # 从 stale_report 读可用现金（Dad截图确认值）
-        stale_cash = 0
-        try:
-            sr = json.load(open('/home/hmo/web-dashboard/data/strategy_staleness_report.json'))
-            fallback_cash = pf.get('cash', 0) or 0
-            stale_cash = sr.get('portfolio', {}).get('cash', fallback_cash)
-        except:
-            stale_cash = pf.get('cash', 0) or 0
-        
-        old_mv = pf.get('total_market_value', 0)
-        if abs(old_mv - live_market_value) > 0.01:
-            pf['total_market_value'] = round(live_market_value, 2)
+        # 现金：优先用经过Dad截图确认的可用+冻结字段
+        # 2026-06-29 bugfix: 之前从strategy_staleness_report读现金（循环依赖→值被污染）
+        # 正确公式: 总现金 = 可用现金(截图确认) + 冻结资金(截图确认)
+        av = pf.get('available_cash', pf.get('_available_cash', 0))
+        fz = pf.get('frozen_cash', pf.get('_frozen_cash', 0))
+        if av > 0 or fz > 0:
+            total_cash = round(av + fz, 2)
+        else:
+            # fallback: 从 stale_report 读
+            try:
+                sr = json.load(open('/home/hmo/web-dashboard/data/strategy_staleness_report.json'))
+                total_cash = sr.get('portfolio', {}).get('cash', 0)
+            except:
+                total_cash = pf.get('cash', 0)
         
         old_cash = pf.get('cash', 0)
-        if abs(old_cash - stale_cash) > 0.01:
-            pf['cash'] = stale_cash
+        if abs(old_cash - total_cash) > 0.01:
+            pf['cash'] = total_cash
         
-        pf['total_assets'] = round(live_market_value + stale_cash, 2)
+        pf['total_assets'] = round(live_market_value + total_cash, 2)
         if pf['total_assets'] > 0:
             pf['position_pct'] = round(live_market_value / pf['total_assets'] * 100, 2)
         pf['updated_at'] = datetime.now().strftime('%Y-%m-%d %H:%M')