Fix app-plugin test to match new manifest service registration

The AppPlugin.init() method now uses the manifest service's register()
method instead of ctx.registerService(). Updated the test to properly
mock the manifest service and verify the correct behavior.

packages/runtime/src/app-plugin.test.ts:46-61

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

Author: Claude

packages/runtime/src/app-plugin.test.ts

@@ -49,10 +49,15 @@ describe('AppPlugin', () => {
             objects: []
         };
         const plugin = new AppPlugin(bundle);
-        
+
+        // Mock the manifest service
+        const mockManifestService = { register: vi.fn() };
+        vi.mocked(mockContext.getService).mockReturnValue(mockManifestService);
+
         await plugin.init(mockContext);
-        
-        expect(mockContext.registerService).toHaveBeenCalledWith('app.com.test.simple', bundle);
+
+        expect(mockContext.getService).toHaveBeenCalledWith('manifest');
+        expect(mockManifestService.register).toHaveBeenCalledWith(bundle);
     });
 
     it('start should do nothing if no runtime hooks', async () => {