fix(trade_query): 优化时间筛选逻辑以支持创建时间的回退处理

在交易查询逻辑中，调整了时间筛选条件，确保在存在 `created_at` 列时使用 `COALESCE(created_at, entry_time)`，并在无该列时回退至 `entry_time`。同时，增强了对时间筛选的支持，确保在不同筛选条件下均能正确返回结果。这一改动旨在提升查询的准确性与一致性。

backend/database/models.py

@@ -1104,7 +1104,7 @@ class Trade:
             query += " AND (entry_reason IS NULL OR entry_reason != 'sync_recovered')"
             query += " AND (exit_reason IS NULL OR exit_reason != 'sync')"
         
-        # 按创建时间筛选时若表无 created_at 则回退为 entry_time
+        # 按创建时间筛选：有 created_at 列则用 COALESCE(created_at, entry_time)；无则回退为 entry_time，保证「按创建时间」有结果
         use_created = (time_filter == "created" and _table_has_column("trades", "created_at"))
         time_col = "COALESCE(created_at, entry_time)" if use_created else None
 
@@ -1118,6 +1118,9 @@ class Trade:
             elif use_created:
                 query += " AND " + time_col + " >= %s AND " + time_col + " <= %s"
                 params.extend([start_timestamp, end_timestamp])
+            elif time_filter == "created":
+                query += " AND entry_time >= %s AND entry_time <= %s"
+                params.extend([start_timestamp, end_timestamp])
             else:
                 query += " AND COALESCE(exit_time, entry_time) >= %s AND COALESCE(exit_time, entry_time) <= %s"
                 params.extend([start_timestamp, end_timestamp])
@@ -1125,12 +1128,12 @@ class Trade:
             if time_filter == "exit":
                 query += " AND ((status = 'closed' AND exit_time >= %s) OR (status != 'closed' AND entry_time >= %s))"
                 params.extend([start_timestamp, start_timestamp])
-            elif time_filter == "entry":
-                query += " AND entry_time >= %s"
-                params.append(start_timestamp)
             elif use_created:
                 query += " AND " + time_col + " >= %s"
                 params.append(start_timestamp)
+            elif time_filter == "entry" or time_filter == "created":
+                query += " AND entry_time >= %s"
+                params.append(start_timestamp)
             else:
                 query += " AND COALESCE(exit_time, entry_time) >= %s"
                 params.append(start_timestamp)
@@ -1138,12 +1141,12 @@ class Trade:
             if time_filter == "exit":
                 query += " AND ((status = 'closed' AND exit_time <= %s) OR (status != 'closed' AND entry_time <= %s))"
                 params.extend([end_timestamp, end_timestamp])
-            elif time_filter == "entry":
-                query += " AND entry_time <= %s"
-                params.append(end_timestamp)
             elif use_created:
                 query += " AND " + time_col + " <= %s"
                 params.append(end_timestamp)
+            elif time_filter == "entry" or time_filter == "created":
+                query += " AND entry_time <= %s"
+                params.append(end_timestamp)
             else:
                 query += " AND COALESCE(exit_time, entry_time) <= %s"
                 params.append(end_timestamp)
@@ -1163,6 +1166,8 @@ class Trade:
         
         if use_created:
             query += " ORDER BY " + time_col + " DESC, id DESC"
+        elif time_filter == "created":
+            query += " ORDER BY entry_time DESC, id DESC"
         else:
             query += " ORDER BY COALESCE(exit_time, entry_time) DESC, id DESC"
         # 未传 limit 时使用默认上限，防止全表加载导致内存暴增（2 CPU 4G 场景）

frontend/src/components/StatsDashboard.css

@@ -339,6 +339,14 @@
   border-radius: 6px;
 }
 
+.position-time-row {
+  font-size: 0.85rem;
+  color: #212529;
+  margin-bottom: 0.5rem;
+  font-weight: 500;
+}
+.position-time-row:empty { display: none; }
+
 .entry-time {
   color: #999;
   font-size: 0.8rem;

frontend/src/components/StatsDashboard.jsx

@@ -696,6 +696,11 @@ const StatsDashboard = () => {
                       {trade.side}
                     </div>
                     <div className="trade-info">
+                      <div className="position-time-row">
+                        开仓时间: {(trade.entry_time || trade.created_at) ? formatEntryTime(trade.entry_time || trade.created_at) : '—'}
+                        {' · '}
+                        创建时间: {(trade.created_at != null && trade.created_at !== '') ? formatEntryTime(trade.created_at) : '—'}
+                      </div>
                       <div className="entry-type-line">
                         入场类型:{' '}
                         <span
@@ -736,14 +741,6 @@ const StatsDashboard = () => {
                       </div>
                       
                       {/* 止损止盈比例 */}
-                      
-                      
-                      <div className="entry-time">
-                        开仓时间: {(trade.entry_time || trade.created_at) ? formatEntryTime(trade.entry_time || trade.created_at) : '—'}
-                      </div>
-                      <div className="entry-time">
-                        创建时间: {(trade.created_at != null && trade.created_at !== '') ? formatEntryTime(trade.created_at) : '—'}
-                      </div>
                     </div>
                     <div className="trade-protection-col">
                       <div className="stop-take-info">

frontend/src/components/TradeList.jsx

@@ -29,7 +29,7 @@ const TradeList = () => {
 
   useEffect(() => {
     loadData()
-  }, [accountId, reconciledOnly, timeFilter]) // accountId / 仅可对账 / 时间筛选方式 变化时重新加载
+  }, [accountId, reconciledOnly, timeFilter, period, useCustomDate, startDate, endDate, symbol, status, tradeType, exitReason]) // 筛选条件变化时重新加载（含按创建时间、快速时间段）
 
   const loadData = async () => {
     setLoading(true)