feat(ledger): 引入 latestPrice 字段与历史成本追踪，实装 P&L 盈亏计算引擎

app/dashboard/assets/page.tsx

@@ -1,5 +1,6 @@
 import { getAssets } from '@/actions/asset';
 import { AddAssetDialog } from '@/components/assets/add-asset-dialog';
+import { UpdatePriceDialog } from '@/components/assets/update-price-dialog';
 import {
   Table,
   TableBody,
@@ -15,33 +16,35 @@ export default async function AssetsPage() {
 
   const typeLabels: Record<string, string> = {
     STOCK: '股票',
-    CRYPTO: '加密货币',
-    CASH: '现金',
+    CRYPTO: '加密貨幣',
+    CASH: '現金',
   };
 
   return (
     <div className="space-y-6">
       <div className="flex items-center justify-between">
-        <h1 className="text-2xl font-bold">资产列表</h1>
+        <h1 className="text-2xl font-bold">資產列表</h1>
         <AddAssetDialog />
       </div>
 
       <div className="rounded-md border">
         <Table>
-          <TableCaption>数据库中所有已录入的资产</TableCaption>
+          <TableCaption>數據庫中所有已錄入的資產</TableCaption>
           <TableHeader>
             <TableRow>
-              <TableHead>资产代码</TableHead>
-              <TableHead>类型</TableHead>
-              <TableHead>基础币种</TableHead>
-              <TableHead>创建时间</TableHead>
+              <TableHead>資產代碼</TableHead>
+              <TableHead>類型</TableHead>
+              <TableHead>基礎幣種</TableHead>
+              <TableHead>當前市價 (Latest Price)</TableHead>
+              <TableHead>創建時間</TableHead>
+              <TableHead>操作</TableHead>
             </TableRow>
           </TableHeader>
           <TableBody>
             {assets.length === 0 ? (
               <TableRow>
-                <TableCell colSpan={4} className="text-center text-muted-foreground">
-                  暂无资产，点击"添加资产"按钮录入第一个资产
+                <TableCell colSpan={6} className="text-center text-muted-foreground">
+                  暫無資產，點擊"添加資產"按鈕錄入第一個資產
                 </TableCell>
               </TableRow>
             ) : (
@@ -50,11 +53,15 @@ export default async function AssetsPage() {
                   <TableCell className="font-medium">{asset.symbol}</TableCell>
                   <TableCell>{typeLabels[asset.type] || asset.type}</TableCell>
                   <TableCell>{asset.baseCurrency}</TableCell>
+                  <TableCell>{asset.latestPrice}</TableCell>
                   <TableCell>
                     {asset.createdAt
                       ? new Date(asset.createdAt).toLocaleString('zh-CN')
                       : '-'}
                   </TableCell>
+                  <TableCell>
+                    <UpdatePriceDialog assetId={asset.id} currentPrice={asset.latestPrice || '0'} />
+                  </TableCell>
                 </TableRow>
               ))
             )}