feat(platform-web): show vehicle detail source scope

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

@@ -88,6 +88,7 @@ export function VehicleDetail({
   const online = resolution?.online || summary?.online || identity?.online || false;
   const lastSeen = resolution?.lastSeen || summary?.lastSeen || latest?.lastSeen || '-';
   const activeProtocol = query.protocol?.trim() ?? '';
+  const scopeText = activeProtocol ? `单一来源：${activeProtocol}` : '全部来源聚合';
   const formKey = `${query.keyword}-${query.protocol ?? ''}`;
   const switchSource = (nextProtocol = '') => {
     const nextQuery = { keyword: resolvedVIN || query.keyword, protocol: nextProtocol };
@@ -136,6 +137,14 @@ export function VehicleDetail({
         </Form>
       </Card>
 
+      <div className="vp-scope-bar">
+        <span className="vp-scope-label">当前查看范围</span>
+        <Tag color={activeProtocol ? 'blue' : 'green'}>{scopeText}</Tag>
+        <Typography.Text type="tertiary">
+          {activeProtocol ? '下方实时、历史、RAW 和里程仅展示该来源返回的数据。' : '下方数据按车辆聚合展示全部可用来源。'}
+        </Typography.Text>
+      </div>
+
       <Card bordered style={{ marginTop: 16 }}>
         <div className="vp-vehicle-summary">
           <Descriptions