Address code review: improve variable naming and error messages

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

apps/console/src/App.tsx

@@ -1,7 +1,7 @@
 import { BrowserRouter, Routes, Route, Navigate, useNavigate, useLocation, useSearchParams } from 'react-router-dom';
 import { useState, useEffect, lazy, Suspense, useMemo, type ReactNode } from 'react';
 import { ObjectForm } from '@object-ui/plugin-form';
-import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription, Empty, EmptyTitle } from '@object-ui/components';
+import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription, Empty, EmptyTitle, EmptyDescription } from '@object-ui/components';
 import { toast } from 'sonner';
 import { SchemaRendererProvider } from '@object-ui/react';
 import type { ConnectionState } from './dataSource';
@@ -380,6 +380,9 @@ function RootRedirect() {
       <div className="h-screen flex items-center justify-center">
         <Empty>
           <EmptyTitle>{error ? 'Failed to Load Configuration' : 'No Apps Configured'}</EmptyTitle>
+          <EmptyDescription>
+            {error ? error.message : 'No applications have been registered. Check your ObjectStack configuration.'}
+          </EmptyDescription>
         </Empty>
       </div>
     );

apps/console/src/mocks/handlers.ts

@@ -54,13 +54,13 @@ export function createHandlers(baseUrl: string, kernel: ObjectKernel, driver: In
     // routes (/meta/apps, /meta/objects, …) for backward compatibility.
     // A single dynamic handler covers both forms.
     http.get(`${prefix}${baseUrl}/meta/:type`, async ({ params }) => {
-      const raw = params.type as string;
-      const response = await protocol.getMetaItems({ type: raw });
+      const metadataType = params.type as string;
+      const response = await protocol.getMetaItems({ type: metadataType });
       return HttpResponse.json(response, { status: 200 });
     }),
     http.get(`${prefix}${baseUrl}/metadata/:type`, async ({ params }) => {
-      const raw = params.type as string;
-      const response = await protocol.getMetaItems({ type: raw });
+      const metadataType = params.type as string;
+      const response = await protocol.getMetaItems({ type: metadataType });
       return HttpResponse.json(response, { status: 200 });
     }),