fix: add display_name/emoji to rule_based portfolio + fallback in table header

data/ai-portfolio.json

@@ -1544,7 +1544,9 @@
           "trades": [],
           "note": "规则策略：持有强势['AVGO', 'TSM', 'QQQ']，剔除弱势"
         }
-      ]
+      ],
+      "display_name": "规则策略",
+      "emoji": "📐"
     }
   }
 }

index.html

@@ -2792,7 +2792,7 @@
         const allDates = [...new Set(ranked.flatMap(r => (r.pf.history||[]).map(h => h.date)))].sort().reverse();
         if (allDates.length > 1) {
           const headers = ['<th style="text-align:left;padding:4px 6px;font-size:0.72rem;">日期</th>',
-            ...ranked.map(r => `<th style="text-align:right;padding:4px 6px;font-size:0.72rem;">${r.pf.emoji} ${r.pf.display_name}</th>`),
+            ...ranked.map(r => `<th style="text-align:right;padding:4px 6px;font-size:0.72rem;">${r.pf.emoji||'📊'} ${r.pf.display_name||r.id}</th>`),
             '<th style="text-align:right;padding:4px 6px;font-size:0.72rem;">SPY 基线</th>'
           ].join('');
           const subHeaders = ['<th style="text-align:left;padding:2px 6px;font-size:0.65rem;color:var(--muted);">累计净值</th>',

scripts/ai-trading-decision.py

@@ -516,6 +516,8 @@ def main():
     # 初始化 rule_based 组合（如不存在）
     if "rule_based" not in portfolios:
         portfolios["rule_based"] = {
+            "display_name": "规则策略",
+            "emoji": "📐",
             "holdings": [{"ticker": "CASH", "shares": 1, "avg_cost": 10000.0}],
             "history":  []
         }