fix: use composite ID for routes in command palette search data

Routes with the same name across different applications (e.g., "route1"
in both QUARKUS-APP and BACKEND-APP) were deduplicated because they
shared the same id (routeId). Use appId/routeId as the id so all
routes appear in cmd-k results.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/components/LayoutShell.tsx

@@ -38,7 +38,7 @@ function buildSearchData(
 
     for (const route of (app.routes || [])) {
       results.push({
-        id: route.routeId,
+        id: `${app.appId}/${route.routeId}`,
         category: 'route',
         title: route.routeId,
         badges: [{ label: app.appId }],