fix: use absolute path for /deployments redirect

The relative `to="apps"` didn't resolve correctly. All other legacy
redirects use absolute paths (`to="/apps"`, `to="/runtime"`).

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

ui/src/router.tsx

@@ -65,7 +65,7 @@ export const router = createBrowserRouter([
           { path: 'logs/:appId/:routeId', element: <Navigate to="/runtime" replace /> },
           { path: 'config', element: <Navigate to="/apps" replace /> },
           { path: 'config/:appId', element: <Navigate to="/apps" replace /> },
-          { path: 'deployments', element: <Navigate to="apps" replace /> },
+          { path: 'deployments', element: <Navigate to="/apps" replace /> },
 
           // Apps tab (OPERATOR+ via UI guard, shows all or single app)
           { path: 'apps', element: <SuspenseWrapper><AppsTab /></SuspenseWrapper> },