Update obsidian-kb skill and add find-skills

- obsidian-kb: Add OCR processors (easyocr, tesseract)
- obsidian-kb: Fix subtitle detection with test files
- obsidian-kb: Add cookie verification script
- Add find-skills skill for discovering capabilities
- Add video processing scripts
- Update clawhub lock file

kb_output/20260208-为什么现在咖啡比矿泉水还便宜？【食录】.md

@@ -0,0 +1,30 @@
+---
+title: "为什么现在咖啡比矿泉水还便宜？【食录】"
+source: "bilibili"
+url: "https://www.bilibili.com/video/BV1KtFzzqEUG"
+author: "赛博食录"
+duration: "12:48"
+date: "2026-02-06 11:44:59"
+bvid: "BV1KtFzzqEUG"
+created: "2026-02-08 23:32:02"
+stats:
+  view: 977748
+  like: 32085
+  coin: 4368
+  favorite: 7642
+tags:
+
+---
+
+
+
+## 视频简介
+你买过最便宜的咖啡要多少钱？（ps：本期全程无广
+
+## 数据统计
+- 播放量: 977,748
+- 点赞: 32,085
+- 投币: 4,368
+- 收藏: 7,642
+- 分享: 1,653
+