# Tasks: enterprise-react-pdf

**Change ID**: enterprise-react-pdf
**Package**: `@suaveplan/react-pdf`
**Target path**: `react/media/react-pdf`
**Prerequisite packages on Verdaccio**: `@suaveplan/error`, `@suaveplan/react-translate`

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## 0. Pre-flight (non-negotiable)

- [ ] 0.1 Confirm clean working tree (`git status` reports nothing) and no in-flight worktrees with uncommitted work (`git worktree list` then `git status` in each)
- [ ] 0.2 If any worktrees exist under `.claude/worktrees/`, account for each one: still-active agent, work-pending-merge, or stale-and-prune. Stale worktrees MUST be removed (`git worktree remove`) before opening a new one — code that has been lost twice on main is the failure mode this guards against.
- [ ] 0.3 Confirm the package set in `MANIFEST.md` matches `find packages -maxdepth 3 -name package.json` count. Drift here means a prior change archived without regenerating the manifest.

## 1. Scaffold

- [ ] Create directory tree. Write `package.json` at `0.1.0`, `tsconfig.json`, `vitest.config.ts`, scripts.
- [ ] Dependencies: `@suaveplan/error workspace:^`, `@suaveplan/react-translate workspace:^`, `pdfjs-dist catalog:documents`, `zod catalog:forms`, `tslib catalog:build`.

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## 2. Error codes and types

- [ ] Define `PdfError`; codes: `PDF_LOAD_FAILED`, `PDF_RENDER_FAILED`.
- [ ] Define `PdfViewerProps` (with `mode?: 'native' | 'pdfjs'`), `PdfToolbarProps`, `NativePdfViewerProps`, `PdfJsViewerProps`.

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## 3. PdfToolbar

- [ ] Props: `currentPage`, `totalPages`, `onPageChange(n)`, `zoom`, `onZoomChange(z)`.
- [ ] Bug fix: `totalPages` accepts `0` and displays "–" (not "0 pages") when page count is unknown.
- [ ] `useTranslation` for all button aria-labels and display strings.
- [ ] Write test + stories (known-pages, unknown-pages, zoomed, playground) + md.

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## 4. NativePdfViewer

- [ ] Renders `<object type="application/pdf">` with fallback. Passes `#page=N` fragment.
- [ ] `totalPages` is always `null` (browser does not expose it); `PdfToolbar` shows "–".
- [ ] Write test + md.

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## 5. PdfJsViewer

- [ ] Loads PDF via `pdfjs-dist` `getDocument(url)`; reads `pdf.numPages`.
- [ ] Renders current page on `<canvas>` with correct `devicePixelRatio` scaling.
- [ ] Text layer: `PDFPageView.renderTextLayer()` for screen reader access.
- [ ] `onPageChange(n)` re-renders page.
- [ ] Throws `PdfError(PDF_LOAD_FAILED)` on `getDocument` failure; `PdfError(PDF_RENDER_FAILED)` on render failure.
- [ ] Write `pdf-js-viewer.test.tsx` (≤500 lines): load PDF (DI-injected mock `pdfjs-dist`), page count read, page navigation, error states. `{ timeout: 10000 }`.
- [ ] Write `pdf-js-viewer.md`.

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## 6. PdfViewer (composite)

- [ ] `mode: 'native' | 'pdfjs'` prop (default `'pdfjs'`); renders correct tier + `PdfToolbar`.
- [ ] Write test + stories (native, pdfjs, loading, error, playground) + md.

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## 7. E2E

- [ ] `e2e/pdf.spec.ts` — Playwright:
  - Render `PdfViewer` in pdfjs mode with a test PDF, verify page count displayed.
  - Click Next in toolbar, verify current page increments.
  - Render in native mode, verify `<object>` element present.

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## 8. Verify and publish

- [ ] `bunx turbo lint typecheck test --filter=@suaveplan/react-pdf` — green.
- [ ] `bunx turbo test:coverage --filter=@suaveplan/react-pdf` — 100%.
- [ ] `bun scripts/publish.ts --package @suaveplan/react-pdf`.
- [ ] Archive change folder.