Add missing specifications field to linkedAppContext mock

LoadedAppContextOutput requires a specifications field. Added specifications: []
to the mock in both deploy.test.ts and release.test.ts to fix the type-check CI failure.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: alfonso-noriega

packages/app/src/cli/commands/app/deploy.test.ts

@@ -28,6 +28,7 @@ describe('app deploy --force deprecation warning', () => {
         businessName: 'test',
         source: OrganizationSource.Partners,
       },
+      specifications: [],
     })
     vi.mocked(deploy).mockResolvedValue({app: testAppLinked()})
   })

packages/app/src/cli/commands/app/release.test.ts

@@ -28,6 +28,7 @@ describe('app release --force deprecation warning', () => {
         businessName: 'test',
         source: OrganizationSource.Partners,
       },
+      specifications: [],
     })
     vi.mocked(release).mockResolvedValue(undefined)
   })