refactor: consolidate tabs — remove standalone Logs and Config tabs

Logs functionality already exists in Runtime tab (AgentHealth/AgentInstance).
Config functionality moved to Deployments tab ConfigSubTab.
Old routes redirect to /runtime and /apps respectively.
Navigation links updated throughout.

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

ui/src/components/LayoutShell.tsx

@@ -618,9 +618,9 @@ function LayoutContent() {
     const appMatch = path.match(/^\/apps\/([^/]+)(?:\/(.+))?$/);
     if (appMatch) {
       const [, sAppId, sRouteId] = appMatch;
-      if (scope.tab === 'config') {
-        // Config tab: always navigate to /config/:appId (route click → same app config)
-        navigate(`/config/${sAppId}`, { state });
+      if (scope.tab === 'apps') {
+        // Deployments tab: navigate to /apps/:appId
+        navigate(`/apps/${sAppId}`, { state });
       } else {
         navigate(sRouteId ? `/${scope.tab}/${sAppId}/${sRouteId}` : `/${scope.tab}/${sAppId}`, { state });
       }