fix: 比价记录列表兼容 user_id 为空的孤儿行 (#103)

后端 admin 比价列表现允许 user_id=null(软鉴权/匿名帧0 建行的孤儿行)。
同步 ComparisonRecordListItem 类型为可空,用户列由 #null 兜底显示为「匿名」。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: guke <guke@autohome.com.cn>
Reviewed-on: #103

src/app/(main)/comparison-records/page.tsx

@@ -408,7 +408,7 @@ export default function ComparisonRecordsPage() {
       width: 140,
       render: (_, r) => (
         <div style={{ color: '#1677ff' }}>
-          <div>{r.phone || `#${r.user_id}`}</div>
+          <div>{r.phone || (r.user_id != null ? `#${r.user_id}` : '匿名')}</div>
           {r.nickname && <div style={{ fontSize: 12 }}>{r.nickname}</div>}
         </div>
       ),
@@ -622,7 +622,7 @@ export default function ComparisonRecordsPage() {
           <Space direction="vertical" size="middle" style={{ width: '100%' }}>
             <Descriptions size="small" column={2} bordered>
               <Descriptions.Item label="用户">
-                {detail.phone || `#${detail.user_id}`}{detail.nickname ? `(${detail.nickname})` : ''}
+                {detail.phone || (detail.user_id != null ? `#${detail.user_id}` : '匿名')}{detail.nickname ? `(${detail.nickname})` : ''}
               </Descriptions.Item>
               <Descriptions.Item label="状态"><Tag color={STATUS_COLOR[detail.status]}>{STATUS_LABEL[detail.status] || detail.status}</Tag></Descriptions.Item>
               <Descriptions.Item label="业务">{detail.business_type}</Descriptions.Item>

src/lib/types.ts

@@ -443,7 +443,7 @@ export interface AuditLog {
 // ===== 比价记录(admin debug 页)=====
 export interface ComparisonRecordListItem {
   id: number;
-  user_id: number;
+  user_id: number | null; // 软鉴权/匿名下帧0 建行时可能暂缺,admin 全看含孤儿行
   phone: string | null;
   nickname: string | null;
   business_type: string;