feat(report): 全标的排名表新增进场日期列

在状态和持有天数之间插入进场日期列，显示持仓标的的连续持仓起始日期（YYYY-MM-DD格式），调出/未入选标的显示—

rotation/simple_rotation.py

@@ -1327,7 +1327,7 @@ class SimpleRotationStrategy:
         rank_map = {c: i + 1 for i, c in enumerate(ranked_all)}
 
         col_labels = ["排名", "标的名称", "市场", "指数代码", "ETF代码", "仓位", "得分",
-                      "指数最新价", "ETF收盘价", "溢价率", "状态", "持有天数", "盈亏"]
+                      "指数最新价", "ETF收盘价", "溢价率", "状态", "进场日期", "持有天数", "盈亏"]
         table_data = []
         row_actions = []  # track action for coloring
 
@@ -1339,13 +1339,14 @@ class SimpleRotationStrategy:
             idx_s = f"{p['idx_close']:.2f}" if p['idx_close'] is not None else "—"
             etf_s = f"{p['etf_close']:.3f}" if p['etf_close'] is not None else "—"
             prem_s = f"{p['premium']:+.2%}" if p['premium'] is not None else "—"
+            entry_date_s = p['entry_date'].strftime('%Y-%m-%d') if p['entry_date'] else "—"
             days_s = str(p['holding_days']) if p['holding_days'] > 0 else "—"
             pnl_s = f"{p['pnl']:+.2%}" if p['pnl'] is not None else "—"
             weight_s = f"{p['weight']:.0%}" if p['weight'] > 0 else "—"
             market = code_config.get(p['code'], {}).get('market', '—')
             table_data.append([
                 rank, p['name'], market, p['code'], p['etf'], weight_s,
-                score_s, idx_s, etf_s, prem_s, p['action'], days_s, pnl_s
+                score_s, idx_s, etf_s, prem_s, p['action'], entry_date_s, days_s, pnl_s
             ])
             row_actions.append(p['action'])