fix(trading-service): 修复P2P转账历史查询参数解析

确保 page 和 pageSize 是有效数字，避免 skip: NaN 错误

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/trading-service/src/application/services/p2p-transfer.service.ts

@@ -253,6 +253,10 @@ export class P2pTransferService {
     page: number = 1,
     pageSize: number = 20,
   ): Promise<{ data: P2pTransferHistoryItem[]; total: number }> {
+    // 确保 page 和 pageSize 是有效数字
+    const validPage = Math.max(1, Number(page) || 1);
+    const validPageSize = Math.max(1, Math.min(100, Number(pageSize) || 20));
+
     const [records, total] = await Promise.all([
       this.prisma.p2pTransfer.findMany({
         where: {
@@ -262,8 +266,8 @@ export class P2pTransferService {
           ],
         },
         orderBy: { createdAt: 'desc' },
-        skip: (page - 1) * pageSize,
-        take: pageSize,
+        skip: (validPage - 1) * validPageSize,
+        take: validPageSize,
       }),
       this.prisma.p2pTransfer.count({
         where: {