fix(mock): 修复事件数据和 API 返回格式

- events.js: 增强搜索支持股票名称/代码，修复字段名
- event.js: 返回结构调整为 { data, pagination }

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/mocks/handlers/event.js

@@ -119,9 +119,12 @@ export const eventHandlers = [
         try {
             const result = generateMockEvents(params);
 
+            // 返回格式兼容 NewsPanel 期望的结构
+            // NewsPanel 期望: { success, data: [], pagination: {} }
             return HttpResponse.json({
                 success: true,
-                data: result,
+                data: result.events,           // 事件数组
+                pagination: result.pagination, // 分页信息
                 message: '获取成功'
             });
         } catch (error) {
@@ -135,16 +138,14 @@ export const eventHandlers = [
                 {
                     success: false,
                     error: '获取事件列表失败',
-                    data: {
-                        events: [],
-                        pagination: {
-                            page: 1,
-                            per_page: 10,
-                            total: 0,
-                            pages: 0,              // ← 对齐后端字段名
-                            has_prev: false,       // ← 对齐后端
-                            has_next: false        // ← 对齐后端
-                        }
+                    data: [],
+                    pagination: {
+                        page: 1,
+                        per_page: 10,
+                        total: 0,
+                        pages: 0,
+                        has_prev: false,
+                        has_next: false
                     }
                 },
                 { status: 500 }