feat: Add download support for xhs, twi, bilibili, zhihu (#22)

* feat: add download support for images, videos, and articles

Add comprehensive download functionality to OpenCLI with support for
multiple platforms and content types.

- Add `src/download/index.ts`: HTTP download with progress, yt-dlp
  wrapper for video platforms, cookie export to Netscape format for
  authenticated downloads
- Add `src/download/progress.ts`: Terminal progress bars, multi-file
  download tracker with status summary
- Add `src/pipeline/steps/download.ts`: New `download` pipeline step
  for declarative YAML pipelines

- Register `download` step in executor.ts
- Add template filters: `slugify`, `sanitize`, `ext`, `basename` for
  filename templating

- `xiaohongshu download`: Download images and videos from notes
- `bilibili download`: Download videos using yt-dlp with cookie auth
- `twitter download`: Download media from user timeline or single tweet
- `zhihu download`: Export articles to Markdown with optional image
  download

```yaml
pipeline:
  - download:
      url: ${{ item.imageUrl }}
      dir: ./downloads
      filename: ${{ item.title | sanitize }}.jpg
      concurrency: 5
      skip_existing: true
      use_ytdlp: false
      type: auto  # auto|image|video|document
```

- Concurrent downloads with configurable parallelism
- Progress bars with file size display
- Skip existing files option
- Cookie forwarding for authenticated downloads
- yt-dlp integration for video platforms (YouTube, Bilibili, Twitter)
- HTML to Markdown conversion for article export

- yt-dlp: Required for video downloads from streaming platforms
- ffmpeg: Optional for video format conversion

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* docs: add download support documentation

- Add Download Support section to both README.md and README.zh-CN.md
- Document supported platforms: Xiaohongshu, Bilibili, Twitter, Zhihu
- Include prerequisites (yt-dlp installation)
- Add usage examples for all download commands
- Document the `download` pipeline step for YAML adapters
- Update built-in commands table with new `download` commands

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix: preserve zhihu ordered list content

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: jackwener <jakevingoo@gmail.com>
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@@ -1,7 +1,7 @@
# OpenCLI
> **Make any website or Electron App your CLI.**
> Zero risk · Reuse Chrome login · AI-powered discovery · 80+ commands · 19 sites
> Zero risk · Reuse Chrome login · AI-powered discovery · Browser + Desktop automation
[中文文档](./README.zh-CN.md)
@@ -22,6 +22,7 @@ Turn ANY Electron application into a CLI tool! Recombine, script, and extend app
- [Prerequisites](#prerequisites)
- [Quick Start](#quick-start)
- [Built-in Commands](#built-in-commands)
- [Download Support](#download-support)
- [Output Formats](#output-formats)
- [For AI Agents (Developer Guide)](#for-ai-agents-developer-guide)
- [Remote Chrome (Server/Headless)](#remote-chrome-serverheadless)
@@ -143,39 +144,101 @@ npm install -g @jackwener/opencli@latest
## Built-in Commands
**32 sites · 162 commands** — run `opencli list` for the live registry.
Run `opencli list` for the live registry.
| Site | Commands | Count | Mode |
|------|----------|:-----:|------|
| **twitter** | `trending` `bookmarks` `profile` `search` `timeline` `thread` `following` `followers` `notifications` `post` `reply` `delete` `like` `article` `follow` `unfollow` `bookmark` `unbookmark` | 18 | 🔐 Browser |
| **reddit** | `hot` `frontpage` `popular` `search` `subreddit` `read` `user` `user-posts` `user-comments` `upvote` `save` `comment` `subscribe` `saved` `upvoted` | 15 | 🔐 Browser |
| **cursor** | `status` `send` `read` `new` `dump` `composer` `model` `extract-code` `ask` `screenshot` `history` `export` | 12 | 🖥️ Desktop |
| **bilibili** | `hot` `search` `me` `favorite` `history` `feed` `subtitle` `dynamic` `ranking` `following` `user-videos` | 11 | 🔐 Browser |
| **codex** | `status` `send` `read` `new` `extract-diff` `model` `ask` `screenshot` `history` `export` | 10 | 🖥️ Desktop |
| **chatwise** | `status` `new` `send` `read` `ask` `model` `history` `export` `screenshot` | 9 | 🖥️ Desktop |
| **notion** | `status` `search` `read` `new` `write` `sidebar` `favorites` `export` | 8 | 🖥️ Desktop |
| **discord** | `status` `send` `read` `channels` `servers` `search` `members` | 7 | 🖥️ Desktop |
| **v2ex** | `hot` `latest` `topic` `daily` `me` `notifications` | 6 | 🌐 / 🔐 |
| **xueqiu** | `feed` `hot-stock` `hot` `search` `stock` `watchlist` | 6 | 🔐 Browser |
| **antigravity** | `status` `send` `read` `new` `evaluate` | 5 | 🖥️ Desktop |
| **xiaohongshu** | `search` `notifications` `feed` `me` `user` | 5 | 🔐 Browser |
| **chatgpt** | `status` `new` `send` `read` `ask` | 5 | 🖥️ Desktop |
| **wechat** | `status` `send` `new` `search` `read` | 5 | 🖥️ Desktop |
| **feishu** | `status` `send` `new` `search` `read` | 5 | 🖥️ Desktop |
| **xiaoyuzhou** | `podcast` `podcast-episodes` `episode` | 3 | 🌐 Public |
| **youtube** | `search` `video` `transcript` | 3 | 🔐 Browser |
| **zhihu** | `hot` `search` `question` | 3 | 🔐 Browser |
| **boss** | `search` `detail` | 2 | 🔐 Browser |
| **coupang** | `search` `add-to-cart` | 2 | 🔐 Browser |
| **bbc** | `news` | 1 | 🌐 Public |
| **ctrip** | `search` | 1 | 🔐 Browser |
| **github** | `search` | 1 | 🌐 Public |
| **hackernews** | `top` | 1 | 🌐 Public |
| **linkedin** | `search` | 1 | 🔐 Browser |
| **reuters** | `search` | 1 | 🔐 Browser |
| **smzdm** | `search` | 1 | 🔐 Browser |
| **weibo** | `hot` | 1 | 🔐 Browser |
| **yahoo-finance** | `quote` | 1 | 🔐 Browser |
| Site | Commands | Mode |
|------|----------|------|
| **twitter** | `trending` `bookmarks` `profile` `search` `timeline` `thread` `following` `followers` `notifications` `post` `reply` `delete` `like` `article` `follow` `unfollow` `bookmark` `unbookmark` `download` | 🔐 Browser |
| **reddit** | `hot` `frontpage` `popular` `search` `subreddit` `read` `user` `user-posts` `user-comments` `upvote` `save` `comment` `subscribe` `saved` `upvoted` | 🔐 Browser |
| **cursor** | `status` `send` `read` `new` `dump` `composer` `model` `extract-code` `ask` `screenshot` `history` `export` | 🖥️ Desktop |
| **bilibili** | `hot` `search` `me` `favorite` `history` `feed` `subtitle` `dynamic` `ranking` `following` `user-videos` `download` | 🔐 Browser |
| **codex** | `status` `send` `read` `new` `extract-diff` `model` `ask` `screenshot` `history` `export` | 🖥️ Desktop |
| **chatwise** | `status` `new` `send` `read` `ask` `model` `history` `export` `screenshot` | 🖥️ Desktop |
| **notion** | `status` `search` `read` `new` `write` `sidebar` `favorites` `export` | 🖥️ Desktop |
| **discord** | `status` `send` `read` `channels` `servers` `search` `members` | 🖥️ Desktop |
| **v2ex** | `hot` `latest` `topic` `daily` `me` `notifications` | 🌐 / 🔐 |
| **xueqiu** | `feed` `hot-stock` `hot` `search` `stock` `watchlist` | 🔐 Browser |
| **antigravity** | `status` `send` `read` `new` `evaluate` | 🖥️ Desktop |
| **chatgpt** | `status` `new` `send` `read` `ask` | 🖥️ Desktop |
| **wechat** | `status` `send` `new` `search` `read` | 🖥️ Desktop |
| **feishu** | `status` `send` `new` `search` `read` | 🖥️ Desktop |
| **xiaohongshu** | `search` `notifications` `feed` `me` `user` `download` | 🔐 Browser |
| **xiaoyuzhou** | `podcast` `podcast-episodes` `episode` | 🌐 Public |
| **zhihu** | `hot` `search` `question` `download` | 🔐 Browser |
| **youtube** | `search` `video` `transcript` | 🔐 Browser |
| **boss** | `search` `detail` | 🔐 Browser |
| **coupang** | `search` `add-to-cart` | 🔐 Browser |
| **bbc** | `news` | 🌐 Public |
| **ctrip** | `search` | 🔐 Browser |
| **github** | `search` | 🌐 Public |
| **hackernews** | `top` | 🌐 Public |
| **linkedin** | `search` | 🔐 Browser |
| **reuters** | `search` | 🔐 Browser |
| **smzdm** | `search` | 🔐 Browser |
| **weibo** | `hot` | 🔐 Browser |
| **yahoo-finance** | `quote` | 🔐 Browser |
## Download Support
OpenCLI supports downloading images, videos, and articles from supported platforms.
### Supported Platforms
| Platform | Content Types | Notes |
|----------|---------------|-------|
| **xiaohongshu** | Images, Videos | Downloads all media from a note |
| **bilibili** | Videos | Requires `yt-dlp` installed |
| **twitter** | Images, Videos | Downloads from user media tab or single tweet |
| **zhihu** | Articles (Markdown) | Exports articles with optional image download |
### Prerequisites
For video downloads from streaming platforms, you need to install `yt-dlp`:
```bash
# Install yt-dlp
pip install yt-dlp
# or
brew install yt-dlp
```
### Usage Examples
```bash
# Download images/videos from Xiaohongshu note
opencli xiaohongshu download --note-id abc123 --output ./xhs
# Download Bilibili video (requires yt-dlp)
opencli bilibili download --bvid BV1xxx --output ./bilibili
opencli bilibili download --bvid BV1xxx --quality 1080p # Specify quality
# Download Twitter media from user
opencli twitter download --username elonmusk --limit 20 --output ./twitter
# Download single tweet media
opencli twitter download --tweet-url "https://x.com/user/status/123" --output ./twitter
# Export Zhihu article to Markdown
opencli zhihu download --url "https://zhuanlan.zhihu.com/p/xxx" --output ./zhihu
# Export with local images
opencli zhihu download --url "https://zhuanlan.zhihu.com/p/xxx" --download-images
```
### Pipeline Step (for YAML adapters)
The `download` step can be used in YAML pipelines:
```yaml
pipeline:
- fetch: https://api.example.com/media
- download:
url: ${{ item.imageUrl }}
dir: ./downloads
filename: ${{ item.title | sanitize }}.jpg
concurrency: 5
skip_existing: true
```
## Output Formats
@@ -220,7 +283,7 @@ Explore outputs to `.opencli/explore/<site>/` (manifest.json, endpoints.json, ca
See **[TESTING.md](./TESTING.md)** for the full testing guide, including:
- Current test coverage (unit + E2E tests across 19 sites)
- Current test coverage (unit + E2E tests across browser and desktop adapters)
- How to run tests locally
- How to add tests when creating new adapters
- CI/CD pipeline with sharding