feat: 添加 MediaCrawler 整合支持

- kb-zhihu-metadata: 新增 zhihu_article_crawler.py 支持爬取知乎专栏文章
- kb-zhihu-content: 添加 article-from-media 类型支持从 MediaCrawler 数据读取
- 更新 SKILL.md 文档说明新功能

kb-zhihu-content/SKILL.md

@@ -6,6 +6,7 @@
 
 - Video download using **yt-dlp**
 - Subtitle extraction (returns no subtitle, triggers Whisper)
+- **Read article content from MediaCrawler data** (NEW!)
 - Supports `ZHIHU_COOKIE` environment variable
 
 ## Environment Variables
@@ -22,20 +23,60 @@ python zhihu_content.py --id "12345678" --type video --output "/path/to/download
 
 # Extract subtitle (returns no subtitle, triggers Whisper)
 python zhihu_content.py --id "12345678" --type subtitle --output "/path/to/subtitles/"
+
+# 从 MediaCrawler 读取文章内容 (⚡ NEW!)
+python zhihu_content.py --type article-from-media --input "~/work/MediaCrawler/data/zhihu/json/detail_contents_2026-02-27.json" --output "~/work/knowledge-base/data/zhihu/"
 ```
 
-## Output
+## MediaCrawler 数据读取
+
+**新功能**：从 MediaCrawler 爬取的数据中提取知乎文章内容
+
+### 使用方法
+
+```bash
+# 从 MediaCrawler JSON 文件读取文章内容
+python zhihu_content.py --type article-from-media \
+    --input "~/work/MediaCrawler/data/zhihu/json/detail_contents_2026-02-27.json" \
+    --output "~/work/knowledge-base/data/zhihu/"
+
+# 查找最新的爬取数据
+python zhihu_content.py --type article-from-media \
+    --output "~/work/knowledge-base/data/zhihu/"
+```
+
+### 参数说明
+
+| 参数 | 说明 |
+|------|------|
+| `--type article-from-media` | 从 MediaCrawler 数据读取 |
+| `--input` | MediaCrawler 输出文件路径（可选，不指定则自动查找最新） |
+| `--output` | 输出目录 |
+
+### 输出格式
 
 ```json
 {
   "success": true,
-  "type": "video",
-  "filename": "video_title.mp4",
-  "filepath": "/path/to/downloads/video_title.mp4",
-  "message": "下载完成: video_title.mp4"
+  "type": "article",
+  "filename": "zhihu_article_如何高效的爬取微信公众号.md",
+  "filepath": "/home/xxx/work/knowledge-base/data/zhihu/zhihu_article_如何高效的爬取微信公众号.md",
+  "message": "文章内容已导出"
 }
 ```
 
+## 原有功能
+
+### Video Download
+
+Video download uses **yt-dlp**:
+1. Parses `ZHIHU_COOKIE` environment variable (optional)
+2. Creates temporary Netscape-format cookie file
+3. Runs `yt-dlp -f best -o <output> <url>`
+4. Cleans up temporary file
+
+**Note**: 知乎视频通常没有官方字幕，将自动触发 Whisper 语音识别
+
 ## Installation
 
 ```bash
@@ -43,16 +84,3 @@ python zhihu_content.py --id "12345678" --type subtitle --output "/path/to/subti
 # Ensure yt-dlp is installed
 pip install yt-dlp aiohttp
 ```
-
-## How It Works
-
-Video download uses **yt-dlp**:
-1. Parses `ZHIHU_COOKIE` environment variable (optional)
-2. Creates temporary Netscape-format cookie file
-3. Runs `yt-dlp -f best -o <output> <url>`
-4. Cleans up temporary file
-
-## Notes
-
-- 知乎视频通常没有官方字幕，将自动触发 Whisper 语音识别
-- 视频下载需要能访问知乎（可能需要代理）