fix(ui): 修复现价变量映射错误，修正负收益绿色显示丢失负号的 Bug

app/dashboard/page.tsx

@@ -57,7 +57,7 @@ function formatPnl(value: string, percent: string, baseCurrency: string): { text
   const symbol = getCurrencySymbol(baseCurrency);
   const absValue = new Big(value).abs().toFixed(2);
   const absPercent = new Big(percent).abs().toFixed(2);
-  const text = `${symbol}${absValue} (${absPercent}%)`;
+  const text = `${symbol}${isPositive ? '' : '-'}${absValue} (${isPositive ? '' : '-'}${absPercent}%)`;
   const className = isPositive ? 'text-red-500' : 'text-green-500';
   return { text, className };
 }

src/actions/portfolio.ts

@@ -37,6 +37,7 @@ interface Position {
   floatingPnlPercent: string;
   cumulativePnlNative: string;
   cumulativePnlPercent: string;
+  latestPrice: string;
   transactions: TransactionRecord[];
 }
 
@@ -399,6 +400,7 @@ export async function getPortfolioPositions(): Promise<Position[]> {
       floatingPnlPercent: floatingPnlPercent.toString(),
       cumulativePnlNative: cumulativePnlNative.toString(),
       cumulativePnlPercent: cumulativePnlPercent.toString(),
+      latestPrice: holding.latestPrice,
       transactions: holding.transactions,
     });
   }