数据同步页增加持仓天数展示，修复持仓同步无法拉取历史数据的问题

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ft-app/app/collector.py

@@ -113,12 +113,6 @@ def sync_positions_bg(contract_code: str) -> bool:
                 .filter(DailyBar.contract == code)
                 .order_by(DailyBar.date).all()
             ]
-            # Only sync dates within or after existing position date range;
-            # akshare may not have data for very old dates
-            if existing_dates:
-                min_pos = min(existing_dates)
-                missing = [d for d in bar_dates if d not in existing_dates and d >= min_pos]
-            else:
             missing = [d for d in bar_dates if d not in existing_dates]
             total_missing = len(missing)
 

ft-app/app/routers/admin.py

@@ -31,9 +31,16 @@ def admin_page(request: Request, db: Session = Depends(get_db)):
                 .filter(DailyBar.contract == c.code)
                 .count()
             )
+            pos_days = len({
+                r[0] for r in
+                db.query(PositionRanking.date)
+                .filter(PositionRanking.contract_code == c.code)
+                .distinct().all()
+            })
             contract_list.append({
                 "id": c.id, "code": c.code, "name": c.name,
                 "is_active": c.is_active, "bar_count": bar_count,
+                "pos_days": pos_days,
             })
 
         product_data.append({

ft-app/app/templates/admin.html

@@ -59,11 +59,12 @@
     </div>
     <div class="product-body" style="display:none;">
       <table style="font-size:0.84rem;">
-        <tr><th style="text-align:left;padding:8px 14px;">合约</th><th style="text-align:center;padding:8px 14px;">数据条数</th><th style="text-align:center;padding:8px 14px;">状态</th><th style="text-align:center;padding:8px 14px;">操作</th></tr>
+        <tr><th style="text-align:left;padding:8px 14px;">合约</th><th style="text-align:center;padding:8px 14px;">行情</th><th style="text-align:center;padding:8px 14px;">持仓</th><th style="text-align:center;padding:8px 14px;">状态</th><th style="text-align:center;padding:8px 14px;">操作</th></tr>
         {% for c in p.contracts %}
         <tr>
           <td style="text-align:left;padding:6px 14px;"><strong>{{ c.code }}</strong></td>
           <td style="text-align:center;padding:6px 14px;">{{ c.bar_count }}</td>
+          <td style="text-align:center;padding:6px 14px;">{{ c.pos_days }}</td>
           <td style="text-align:center;padding:6px 14px;">
             {% if c.is_active %}<span class="badge badge-up">启用</span>{% else %}<span class="badge badge-down">停用</span>{% endif %}
           </td>