test(10-05): Wave 0 skeleton + dropdown stubs (UX-02, UX-03, UX-04, UX-13, UX-14)

- StorageBrowser.skeleton.test.js: 7 it.todo stubs for UX-02 skeleton rows + UX-13 Teleport dropdown
- AppSidebar.empty.test.js: 10 it.todo stubs for UX-03 skeleton, UX-01 micro empty states, UX-14 inline-New removal
- AdminAuditView.skeleton.test.js: 5 it.todo stubs for UX-04 audit skeleton + UX-01 empty state
- AdminUsersView.skeleton.test.js: 3 it.todo stubs for UX-04 users skeleton
- dropdown.test.js: 4 it.todo stubs for UX-13 Teleport+getBoundingClientRect pattern

frontend/src/components/layout/__tests__/AppSidebar.empty.test.js

@@ -0,0 +1,20 @@
+import { describe, it } from 'vitest'
+
+describe('UX-03: AppSidebar shows skeleton placeholders while loading', () => {
+  it.todo('renders skeleton rows in folder section when loadingRoots=true')
+  it.todo('renders skeleton rows in topics section when topicsStore.loading=true')
+  it.todo('renders skeleton rows in cloud section when loadingCloudConnections=true')
+  it.todo('Loading… text is removed from all three sections')
+})
+
+describe('UX-01 (sidebar micro): EmptyState size=sm appears when each section is empty', () => {
+  it.todo('folders empty: EmptyState size=sm with icon=folder')
+  it.todo('topics empty: EmptyState size=sm with icon=tag')
+  it.todo('cloud empty: EmptyState size=sm with icon=cloud and a Settings link in #cta')
+})
+
+describe('UX-14: AppSidebar no longer renders an inline "New" folder button', () => {
+  it.todo('no <button> with text "New" exists in the rendered template')
+  it.todo('startNewFolder/cancelNewFolder/submitNewFolder methods are removed')
+  it.todo('newFolderName/showNewFolderInput state is removed')
+})