테스트/린트 안정화: 버튼 쿼리 모호성 제거, 훅 deps 보강, vi.spyOn 모킹, 멀티선택 Moveable 간섭 방지 재확인, 스냅 우선순위 회귀 그린

components/wysiwyg/WysiwygBuilder.form-help.acceptance.test.tsx

@@ -0,0 +1,29 @@
+import { describe, it, expect } from 'vitest'
+import { render, screen, fireEvent } from '@testing-library/react'
+import { WysiwygBuilderPage } from '@/components/wysiwyg/WysiwygBuilderPage'
+
+describe('WYSIWYG Builder - Form Help (aria-describedby)', () => {
+  it('Input: edits Help in Properties and Canvas reflects help + aria-describedby', async () => {
+    render(<WysiwygBuilderPage />)
+
+    // Add Input
+    fireEvent.click(screen.getByRole('button', { name: /Add Input/i }))
+
+    const obj = await screen.findByTestId(/obj-input-/)
+    fireEvent.mouseDown(obj, { clientX: 80, clientY: 80 })
+    fireEvent.mouseUp(screen.getByTestId('wysiwyg-canvas'))
+
+    const panel = await screen.findByLabelText('Properties Panel')
+    const helpInput = panel.querySelector('input[aria-label="Help"]') as HTMLInputElement
+    fireEvent.change(helpInput, { target: { value: 'We will not spam you.' } })
+
+    const rendered = await screen.findByTestId(/obj-input-/)
+    expect(rendered).toHaveTextContent('We will not spam you.')
+    const inputEl = rendered.querySelector('input') as HTMLInputElement
+    expect(inputEl).toBeTruthy()
+    const describedby = inputEl.getAttribute('aria-describedby')
+    expect(describedby).toMatch(/-help$/)
+    const helpEl = rendered.querySelector(`#${describedby}`)
+    expect(helpEl?.textContent).toContain('We will not spam you.')
+  })
+})