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openspec/changes/enterprise-react-file-upload/proposal.md

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+# OpenSpec Change: enterprise-react-file-upload
+
+- **Change ID**: enterprise-react-file-upload
+- **Package**: `@suaveplan/react-file-upload`
+- **Category**: react
+- **Target path**: `react/media/react-file-upload`
+- **Status**: PROPOSED
+- **Date**: 2026-04-24
+- **Reference spec**: `/mnt/s/web/suaveplan/enterprise/react-file-upload.md`
+
+---
+
+## Summary
+
+Deliver `@suaveplan/react-file-upload` on genesis from scratch at enterprise quality. Drag-and-drop / chunked-upload kit: composite `FileUpload` (Dropzone + FileList + ProgressBar), individual components, `useFileUpload` (chunking, concurrency, progress, cancellation, retry, auto-upload) and `useDropzone` (HTML5 drag-drop + click-to-browse). Pure helpers: `createFileState`, `splitFileIntoChunks`, `validateFile`, `matchesMimePattern`, `createPreviewUrl`, `revokePreviewUrl`, `formatBytes`, `calculateProgress`, `isImageFile`.
+
+---
+
+## Current-state audit (genesis)
+
+Package does not exist on genesis — fresh build.
+
+---
+
+## Available workspace deps on genesis
+
+| Package | Role |
+|---|---|
+| `@suaveplan/error` (`workspace:^`) | `FileUploadError` |
+| `@suaveplan/mime` (`workspace:^`) | MIME type validation |
+| `@suaveplan/react-translate` (`workspace:^`) | i18n |
+| `zod` (`catalog:forms`) | Upload config schemas |
+| `@opentelemetry/api` (`catalog:observability`) | `file_upload.complete` span |
+
+External: `tslib catalog:build`. React 18 peer.
+
+---
+
+## Preserved public API surface
+
+`FileUpload`, `Dropzone`, `FileList`, `ProgressBar`, `useFileUpload`, `useDropzone`, upload-engine helpers + all types.
+
+---
+
+## New additions for genesis
+
+1. **`FileUploadError`** — codes: `FILE_UPLOAD_VALIDATION_FAILED`, `FILE_UPLOAD_CHUNK_FAILED`, `FILE_UPLOAD_NETWORK_ERROR`.
+2. **`@suaveplan/mime` integration** — MIME validation via `matchesMimePattern` delegates to `@suaveplan/mime`.
+3. **Stories** — every component with default, uploading, complete, error, playground.
+4. **Playwright E2E** — file drag-drop, progress bar, cancel upload.
+
+---
+
+## File layout
+
+```text
+react/media/react-file-upload/
+  package.json
+  tsconfig.json
+  vitest.config.ts
+  src/
+    index.ts
+    upload-engine/ (ts + md + test + index)
+    dropzone/ (tsx + types + md + test + stories + index)
+    file-list/ (tsx + types + md + test + stories + index)
+    progress-bar/ (tsx + types + md + test + stories + index)
+    file-upload/ (tsx + types + md + test + stories + index)
+    hooks/
+      use-file-upload/ use-dropzone/
+    types/
+  e2e/
+    file-upload.spec.ts
+```

openspec/changes/enterprise-react-file-upload/tasks.md

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+# Tasks: enterprise-react-file-upload
+
+**Change ID**: enterprise-react-file-upload
+**Package**: `@suaveplan/react-file-upload`
+**Target path**: `react/media/react-file-upload`
+**Prerequisite packages on Verdaccio**: `@suaveplan/error`, `@suaveplan/mime`, `@suaveplan/react-translate`
+
+---
+
+## 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/mime workspace:^`, `@suaveplan/react-translate workspace:^`, `zod catalog:forms`, `@opentelemetry/api catalog:observability`, `tslib catalog:build`.
+
+---
+
+## 2. Error codes and types
+
+- [ ] Define `FileUploadError`; codes: `FILE_UPLOAD_VALIDATION_FAILED`, `FILE_UPLOAD_CHUNK_FAILED`, `FILE_UPLOAD_NETWORK_ERROR`.
+- [ ] Define `FileState`, `ChunkState`, `UploadOptions`, `DropzoneOptions`, `UploadStatus`.
+
+---
+
+## 3. Upload engine
+
+- [ ] `createFileState(file: File): FileState`.
+- [ ] `splitFileIntoChunks(file, chunkSize): Blob[]`.
+- [ ] `validateFile(file, options)` — checks size, MIME via `@suaveplan/mime` `matchesMimePattern`. Throws `FileUploadError(FILE_UPLOAD_VALIDATION_FAILED)` on failure.
+- [ ] `matchesMimePattern(file, pattern)` — delegates to `@suaveplan/mime`.
+- [ ] `createPreviewUrl(file): string`, `revokePreviewUrl(url): void` — `URL.createObjectURL` / `revokeObjectURL`.
+- [ ] `formatBytes(bytes): string`, `calculateProgress(chunks): number`, `isImageFile(file): boolean`.
+- [ ] Write `upload-engine.test.ts` (≤500 lines): all functions. `{ timeout: 5000 }`.
+- [ ] Write `upload-engine.md`.
+
+---
+
+## 4. Hooks
+
+### `useDropzone`
+
+- [ ] HTML5 drag events + click-to-browse; `onDrop(files: File[])`, `isDragging`, `rootProps`, `inputProps`.
+- [ ] A11y: `role="button"`, `aria-label`, keyboard Enter/Space opens file picker.
+- [ ] Write `use-dropzone.test.tsx` + md.
+
+### `useFileUpload`
+
+- [ ] Manages `files: FileState[]`, chunked upload (configurable `concurrency`, `chunkSize`), `upload(files)`, `cancel(id)`, `retry(id)`, `remove(id)`. Injectable `uploadFn(chunk, metadata)`.
+- [ ] Throws `FileUploadError(FILE_UPLOAD_CHUNK_FAILED)` on chunk failure; auto-retries up to `maxRetries`.
+- [ ] OTel `file_upload.complete` span on each file completion.
+- [ ] Write `use-file-upload.test.ts` (≤500 lines): upload, progress, cancel, retry. `{ timeout: 10000 }`.
+- [ ] Write `use-file-upload.md`.
+
+---
+
+## 5. Components
+
+### Dropzone
+
+- [ ] Uses `useDropzone`; renders drag-target area with i18n copy.
+- [ ] Write test + stories (default, dragging, with-accepted-types, playground) + md.
+
+### FileList
+
+- [ ] Renders `FileState[]` with name, size, progress, cancel/retry buttons.
+- [ ] Write test + stories + md.
+
+### ProgressBar
+
+- [ ] Single-file progress bar component.
+- [ ] Write test + stories + md.
+
+### FileUpload (composite)
+
+- [ ] Composes `Dropzone + FileList + ProgressBar`.
+- [ ] Write test + stories (default, uploading, complete, error, playground) + md.
+
+---
+
+## 6. E2E
+
+- [ ] `e2e/file-upload.spec.ts` — Playwright:
+  - Use `page.setInputFiles` to upload a file → progress bar appears.
+  - Progress reaches 100% → complete state shown.
+  - Click cancel during upload → file marked cancelled.
+
+---
+
+## 7. Verify and publish
+
+- [ ] `bunx turbo lint typecheck test --filter=@suaveplan/react-file-upload` — green.
+- [ ] `bunx turbo test:coverage --filter=@suaveplan/react-file-upload` — 100%.
+- [ ] `bun scripts/publish.ts --package @suaveplan/react-file-upload`.
+- [ ] Archive change folder.