feat(platform): preserve vehicle context in topbar tasks

vehicle-data-platform/apps/web/src/layout/AppShell.tsx

@@ -272,7 +272,7 @@ export function AppShell({
               <Tag color={amapConfigured ? 'green' : 'orange'}>{amapConfigured ? '高德地图就绪' : '高德地图待配置'}</Tag>
               <div className="vp-topbar-quick-actions" aria-label="车辆服务快捷入口">
                 {quickActions.map((item) => (
-                  <Button key={item.page} size="small" aria-label={item.ariaLabel} onClick={() => onChange(item.page)}>
+                  <Button key={item.page} size="small" aria-label={item.ariaLabel} onClick={() => (onCustomerTask ?? onChange)(item.page)}>
                     {item.label}
                   </Button>
                 ))}
@@ -281,7 +281,7 @@ export function AppShell({
                 size="small"
                 aria-label={`顶部${alertLabel}`}
                 className={alertClassName}
-                onClick={() => onChange('alert-events')}
+                onClick={() => (onCustomerTask ?? onChange)('alert-events')}
               >
                 {alertLabel}
               </Button>