feat(ui): 添加 Big.js 格式化工具，优化表格数字精度展示

app/dashboard/transactions/page.tsx

@@ -1,6 +1,7 @@
 import { getAssets } from '@/actions/asset';
 import { getTransactions } from '@/actions/transaction';
 import { AddTransactionDialog } from '@/components/transactions/add-transaction-dialog';
+import { formatAmount, formatQuantity } from '@/lib/formatters';
 import {
   Table,
   TableBody,
@@ -25,7 +26,7 @@ export default async function TransactionsPage() {
     FEE: '手续费',
   };
 
-  const assetMap = new Map(assets.map((a) => [a.id, a.symbol]));
+  const assetMap = new Map(assets.map((a) => [a.id, { symbol: a.symbol, type: a.type }]));
 
   return (
     <div className="space-y-6">
@@ -62,14 +63,16 @@ export default async function TransactionsPage() {
               </TableRow>
             ) : (
               transactions.map((tx) => {
-                const symbol = assetMap.get(tx.assetId) || tx.assetId;
+                const assetInfo = assetMap.get(tx.assetId);
+                const symbol = assetInfo?.symbol || tx.assetId;
+                const assetType = assetInfo?.type || 'CASH';
                 return (
                   <TableRow key={tx.id}>
                     <TableCell className="font-medium">{symbol}</TableCell>
                     <TableCell>{typeLabels[tx.txType] || tx.txType}</TableCell>
-                    <TableCell>{tx.quantity}</TableCell>
-                    <TableCell>{tx.price}</TableCell>
-                    <TableCell>{tx.fee}</TableCell>
+                    <TableCell>{formatQuantity(tx.quantity, assetType)}</TableCell>
+                    <TableCell>{formatAmount(tx.price)}</TableCell>
+                    <TableCell>{formatAmount(tx.fee)}</TableCell>
                     <TableCell>{tx.txCurrency}</TableCell>
                     <TableCell>
                       {tx.executedAt