Phase 11: version PDF (FR-15)

- เลข version ใหม่: เว็บ-generate = v0 ฉบับตั้งต้น (ไม่มี PDF), add-in save (Start Versioning + Save & Version) = v1+ มี PDF เสมอ
- PDF ผลิตจาก Word จริงผ่าน task pane เท่านั้น (getFileAsync Pdf + runtime guard, manifest ไม่เพิ่ม requirement); capture/upload เป็น best-effort — docx ผ่านแม้ PDF ล้ม + MessageBar เตือนตาม hasPdf
- Backend: DocumentVersion.PdfObjectKey (nullable, migration AddVersionPdf) + sibling .pdf ใน bucket docx-versions · multipart part pdf (ผิด type → 400) · /download + /download-link รับ ?format=pdf (ไม่มี → 404) · presigned ฝังชื่อไฟล์ไทย + _vN (RFC 5987)
- Web: เปิดไฟล์แทน blob-download — PDF แท็บใหม่, docx ผ่าน ms-word:ofe|u| พร้อม heuristic fallback ลิงก์สำรอง (useVersionOpen, versionDownload) · ปุ่ม "เปิดใน Word" ที่หน้า success ของฟอร์มสร้างเอกสาร
- Spec v7 + CONTEXT.md + ADR 0001 + แผน docs/plans/version-pdf.md
- Automated QA: backend 68 / add-in 63 / web 55 ผ่าน · manual acceptance ผ่านบน Word for Mac (2026-09-08) รวม fidelity + track changes — ค้างเฉพาะ Windows / Word on the web

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

web/test/useVersionOpen.spec.ts

@@ -0,0 +1,100 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { createApp, type App } from 'vue'
+import { useVersionOpen } from '../app/composables/useVersionOpen'
+
+let app: App
+let host: HTMLDivElement
+const apiJson = vi.fn()
+const replace = vi.fn()
+const close = vi.fn()
+let tab: { opener: unknown; closed: boolean; location: { replace: typeof replace }; close: typeof close }
+
+function mount() {
+  let result!: ReturnType<typeof useVersionOpen>
+  host = document.createElement('div')
+  document.body.append(host)
+  app = createApp({ setup() { result = useVersionOpen(); return () => null } })
+  app.mount(host)
+  return result
+}
+
+beforeEach(() => {
+  vi.useFakeTimers()
+  vi.stubGlobal('useApi', () => ({ apiJson }))
+  tab = { opener: {}, closed: false, location: { replace }, close }
+  vi.spyOn(window, 'open').mockReturnValue(tab as unknown as Window)
+})
+afterEach(() => {
+  app?.unmount()
+  host?.remove()
+  vi.restoreAllMocks()
+  vi.unstubAllGlobals()
+  vi.clearAllMocks()
+  vi.useRealTimers()
+})
+
+describe('version open lifecycle', () => {
+  it('reserves PDF tab synchronously, navigates after auth, leaves completed PDF open on unmount', async () => {
+    let resolve!: (value: unknown) => void
+    apiJson.mockReturnValue(new Promise(r => { resolve = r }))
+    const state = mount()
+    const pending = state.openVersion('d', 'v', 'pdf')
+    expect(window.open).toHaveBeenCalledWith('about:blank', '_blank')
+    expect(tab.opener).toBeNull()
+    expect(state.openingVersionId.value).toBe('v')
+    resolve({ url: 'https://files.example/v.pdf' })
+    await pending
+    expect(replace).toHaveBeenCalledWith('https://files.example/v.pdf')
+    expect(state.fallbackUrl.value).toBe('https://files.example/v.pdf')
+    app.unmount()
+    expect(close).not.toHaveBeenCalled()
+  })
+  it('keeps a fallback when popup is blocked', async () => {
+    vi.mocked(window.open).mockReturnValue(null)
+    apiJson.mockResolvedValue({ url: 'https://files.example/v.pdf' })
+    const state = mount()
+    await state.openVersion('d', 'v', 'pdf')
+    expect(state.openNotice.value).toBeTruthy()
+    expect(state.fallbackUrl.value).toBe('https://files.example/v.pdf')
+  })
+  it('closes pending tab immediately on reset and ignores a late response', async () => {
+    let resolve!: (value: unknown) => void
+    apiJson.mockReturnValue(new Promise(r => { resolve = r }))
+    const state = mount()
+    const pending = state.openVersion('d', 'v', 'pdf')
+    state.resetOpen()
+    expect(close).toHaveBeenCalledTimes(1)
+    resolve({ url: 'https://files.example/v.pdf' })
+    await pending
+    expect(replace).not.toHaveBeenCalled()
+    expect(state.fallbackUrl.value).toBeNull()
+  })
+  it('closes reserved tab and reports request failure', async () => {
+    apiJson.mockRejectedValue(new Error('offline'))
+    const state = mount()
+    await state.openVersion('d', 'v', 'pdf')
+    expect(close).toHaveBeenCalled()
+    expect(state.downloadError.value).toBe('offline')
+    expect(state.openingVersionId.value).toBeNull()
+  })
+  it('handles synchronous popup errors and restores controls', async () => {
+    vi.mocked(window.open).mockImplementation(() => { throw new Error('popup error') })
+    const state = mount()
+    await state.openVersion('d', 'v', 'pdf')
+    expect(state.downloadError.value).toBe('popup error')
+    expect(state.openingVersionId.value).toBeNull()
+  })
+  it('offers Word fallback after timeout and removes listeners on unmount', async () => {
+    const assign = vi.spyOn(window.location, 'assign').mockImplementation(() => {})
+    const remove = vi.spyOn(window, 'removeEventListener')
+    apiJson.mockResolvedValue({ url: 'https://files.example/v.docx?signature=a%2Fb' })
+    const state = mount()
+    await state.openVersion('d', 'v')
+    expect(assign).toHaveBeenCalledWith('ms-word:ofe|u|https://files.example/v.docx?signature=a%2Fb')
+    vi.advanceTimersByTime(1500)
+    expect(state.openNotice.value).toBeTruthy()
+    expect(state.fallbackUrl.value).toBeTruthy()
+    app.unmount()
+    expect(remove).toHaveBeenCalledWith('blur', expect.any(Function))
+  })
+})