feat(web): unify vehicle evidence workspace

vehicle-data-platform/apps/web/src/v2/pages/VehicleSearchWorkspace.tsx

@@ -10,7 +10,7 @@ import { canAdminister } from '../auth/session';
 import { formatZhNumber } from '../domain/formatters';
 import { useMobileLayout } from '../hooks/useMobileLayout';
 import { QUERY_MEMORY, queryScopeKey, retainPreviousPageWithinScope } from '../queryPolicy';
-import { PanelEmpty } from '../shared/AsyncState';
+import { PanelEmpty, PanelLoading } from '../shared/AsyncState';
 import { MobileFilterToggle } from '../shared/MobileFilterToggle';
 import { MobileFilterSheet, MobileFilterSheetSection } from '../shared/MobileFilterSheet';
 import { ProtocolTag } from '../shared/ProtocolTag';
@@ -328,7 +328,7 @@ export default function VehicleSearchWorkspace() {
         </div>}
       />
       {candidates.isFetching && !candidates.data
-        ? <div className="v2-vehicle-recent-state" role="status"><span className="v2-spinner" /><span>正在读取授权车辆…</span></div>
+        ? <PanelLoading className="v2-vehicle-directory-loading" compact title="正在读取授权车辆" description="车辆目录返回后会自动显示。" />
         : candidates.isError
           ? <div className="v2-vehicle-recent-state is-error" role="alert"><span>{candidates.error instanceof Error ? candidates.error.message : '授权车辆加载失败'}</span><Button size="small" theme="light" onClick={() => candidates.refetch()}>重新加载</Button></div>
           : pageVehicles.length
@@ -418,6 +418,6 @@ export default function VehicleSearchWorkspace() {
               />}
       {total > 0 ? <footer className="v2-vehicle-directory-pagination"><TablePagination page={page} totalPages={totalPages} info={`共 ${total.toLocaleString('zh-CN')} 辆 · 本页 ${pageVehicles.length.toLocaleString('zh-CN')} 辆`} disabled={candidates.isFetching} onPageChange={(next) => { setPage(next); setCandidatesOpen(false); }} /></footer> : null}
     </Card>
-    {syncOpen ? <Suspense fallback={<Card className="v2-profile-sync-panel v2-profile-sync-loading" bodyStyle={{ padding: 0 }}><span role="status"><span className="v2-spinner" />正在加载主档同步工具…</span></Card>}><VehicleProfileSyncPanel onClose={() => setSyncOpen(false)} /></Suspense> : null}
+    {syncOpen ? <Suspense fallback={<Card className="v2-profile-sync-panel v2-profile-sync-loading" bodyStyle={{ padding: 0 }}><PanelLoading compact title="正在加载主档同步工具" description="同步配置就绪后会自动显示。" /></Card>}><VehicleProfileSyncPanel onClose={() => setSyncOpen(false)} /></Suspense> : null}
   </section>;
 }