fix(data_management): 更新数据库交易查询逻辑

在后端 API 的 `query_db_trades` 函数中，将 `reconciled_only` 参数类型从布尔值更改为可选字符串，并在查询逻辑中添加了相应的处理。同时，在前端 `DataManagement` 组件中，初始化 `dbDate` 为当前日期，并优化了参数构建逻辑，以确保在请求时正确传递日期和对账状态。这些改动提升了数据查询的灵活性与准确性。

backend/api/routes/data_management.py

@@ -78,7 +78,7 @@ async def query_db_trades(
     end_date: Optional[str] = Query(None),
     symbol: Optional[str] = Query(None),
     time_filter: str = Query("created", description="created/entry/exit"),
-    reconciled_only: bool = Query(False),
+    reconciled_only: Optional[str] = Query(None),
     limit: int = Query(500, ge=1, le=2000),
 ):
     """
@@ -87,6 +87,7 @@ async def query_db_trades(
     sd, ed = start_date, end_date
     if date:
         sd, ed = date, date
+    _reconciled = str(reconciled_only or "").lower() in ("true", "1", "yes")
     start_ts, end_ts = _get_timestamp_range(period or "today", sd, ed)
     trades = Trade.get_all(
         start_timestamp=start_ts,
@@ -96,7 +97,7 @@ async def query_db_trades(
         account_id=account_id,
         time_filter=time_filter,
         limit=limit,
-        reconciled_only=reconciled_only,
+        reconciled_only=_reconciled,
         include_sync=True,
     )
     out = []

frontend/src/components/DataManagement.jsx

@@ -17,7 +17,7 @@ export default function DataManagement() {
 
   // DB 交易
   const [dbAccountId, setDbAccountId] = useState('')
-  const [dbDate, setDbDate] = useState('')
+  const [dbDate, setDbDate] = useState(() => new Date().toISOString().slice(0, 10))
   const [dbTimeFilter, setDbTimeFilter] = useState('created')
   const [dbReconciledOnly, setDbReconciledOnly] = useState(false)
   const [dbSymbol, setDbSymbol] = useState('')
@@ -53,13 +53,10 @@ export default function DataManagement() {
     setDbError('')
     setDbResult(null)
     try {
-      const params = {
-        account_id: aid,
-        date: dbDate || undefined,
-        time_filter: dbTimeFilter,
-        reconciled_only: dbReconciledOnly ? 'true' : undefined,
-        symbol: dbSymbol || undefined,
-      }
+      const params = { account_id: aid, time_filter: dbTimeFilter }
+      if (dbDate) params.date = dbDate
+      if (dbReconciledOnly) params.reconciled_only = 'true'
+      if (dbSymbol && dbSymbol.trim()) params.symbol = dbSymbol.trim()
       const res = await api.getDataManagementDbTrades(params)
       setDbResult(res)
     } catch (e) {