feat(platform-web): drill into service status coverage

vehicle-data-platform/apps/web/src/pages/Dashboard.tsx

@@ -1,4 +1,5 @@
 import { Button, Card, Col, Form, Row, Select, Space, Spin, Table, Tag, Toast, Typography } from '@douyinfe/semi-ui';
+import { IconSearch } from '@douyinfe/semi-icons';
 import { useEffect, useState } from 'react';
 import { api } from '../api/client';
 import type { DashboardSummary, LinkHealth, ProtocolStat, QualityIssueRow, ServiceStatusStat, VehicleCoverageRow, VehicleRealtimeRow } from '../api/types';
@@ -108,7 +109,19 @@ export function Dashboard({ onOpenVehicle, onOpenQuality }: { onOpenVehicle: (vi
                     title: '状态',
                     render: (_: unknown, row: ServiceStatusStat) => <Tag color={serviceStatusColor[row.status] ?? 'grey'}>{row.title}</Tag>
                   },
-                  { title: '车辆数', dataIndex: 'count' }
+                  { title: '车辆数', dataIndex: 'count' },
+                  {
+                    title: '操作',
+                    width: 90,
+                    render: (_: unknown, row: ServiceStatusStat) => (
+                      <Button
+                        aria-label={`查看${row.title}`}
+                        icon={<IconSearch />}
+                        size="small"
+                        onClick={() => loadCoverage({ serviceStatus: row.status })}
+                      />
+                    )
+                  }
                 ]}
               />
             </Card>

vehicle-data-platform/apps/web/src/test/App.test.tsx

@@ -217,6 +217,50 @@ test('filters dashboard coverage by service status', async () => {
   });
 });
 
+test('opens dashboard coverage from service status distribution', async () => {
+  window.history.replaceState(null, '', '/#/dashboard');
+  const fetchMock = vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
+    const path = String(input);
+    if (path.includes('/api/dashboard/summary')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            onlineVehicles: 3,
+            activeToday: 4,
+            frameToday: 1286320,
+            issueVehicles: 7,
+            kafkaLag: 0,
+            protocols: [],
+            serviceStatuses: [
+              { status: 'degraded', title: '部分来源离线', count: 39 }
+            ],
+            linkHealth: []
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    return {
+      ok: true,
+      json: async () => ({
+        data: { items: [], total: 0, limit: 8, offset: 0 },
+        traceId: 'trace-test',
+        timestamp: 1783094400000
+      })
+    } as Response;
+  });
+
+  render(<App />);
+
+  fireEvent.click(await screen.findByRole('button', { name: '查看部分来源离线' }));
+
+  await waitFor(() => {
+    expect(fetchMock).toHaveBeenCalledWith(expect.stringContaining('serviceStatus=degraded'), undefined);
+  });
+});
+
 test('opens vehicle detail from shareable hash', async () => {
   window.history.replaceState(null, '', '/#/detail?keyword=%E7%B2%A4AG18312');
   vi.spyOn(globalThis, 'fetch').mockResolvedValue({