feat(dashboard): 优化资产分布图表，实现按市场维度的聚合展示与 Tooltip 交互增强

app/dashboard/page.tsx

@@ -5,17 +5,8 @@ import AllocationChart from '@/components/dashboard/allocation-chart';
 import { SyncButton } from '@/components/assets/sync-button';
 import Big from 'big.js';
 
-const CHART_COLORS = [
-  '#3b82f6',
-  '#8b5cf6',
-  '#10b981',
-  '#f59e0b',
-  '#ef4444',
-  '#06b6d4',
-];
-
 export default async function DashboardPage() {
-  const { positions, totalCnyValue, chartData, totalPnlCny, unrealizedPnlCny } = await getPortfolioSummary();
+  const { positions, totalCnyValue, chartData, totalPnlCny, unrealizedPnlCny, marketAllocation } = await getPortfolioSummary();
 
   const formattedTotal = formatAmount(totalCnyValue);
   const formattedTotalPnl = formatAmount(totalPnlCny);
@@ -23,11 +14,6 @@ export default async function DashboardPage() {
   const totalPnlIsPositive = new Big(totalPnlCny).gte(0);
   const unrealizedIsPositive = new Big(unrealizedPnlCny).gte(0);
 
-  const displayChartData = chartData.map((item) => ({
-    ...item,
-    value: Number(item.value),
-  }));
-
   return (
     <div className="space-y-6">
       <div>
@@ -168,7 +154,7 @@ export default async function DashboardPage() {
           <CardTitle>资产分布</CardTitle>
         </CardHeader>
         <CardContent>
-          <AllocationChart data={displayChartData} />
+          <AllocationChart data={marketAllocation} />
         </CardContent>
       </Card>
     </div>