feat(posts): publish case study on why I built a video knowledge base with generated art

scripts/og-gen/art-meta.json

@@ -227,5 +227,8 @@
  },
  "generating-subtitles-for-songs-without-timestamps": {
   "evidence": "18 songs - 342 lines - 0.96 anchor coverage"
+ },
+ "why-i-built-a-video-knowledge-base": {
+  "evidence": "263 pages · 20ms search · 0 cloud STT fees"
  }
 }

src/content/posts/why-i-built-a-video-knowledge-base.md

@@ -4,7 +4,9 @@ description: "Why saving short videos to bookmarks is a dead end, and how I buil
 pubDate: 2024-11-28
 category: case-studies
 tags: ["ai", "video-processing", "whisper", "astro", "knowledge-management"]
-draft: true
+ogImage: "/og/why-i-built-a-video-knowledge-base.jpg"
+banner: "/banners/why-i-built-a-video-knowledge-base.jpg"
+draft: false
 ---
 
 Like many developers and lifelong learners, I found myself accumulating hundreds of bookmarks across platforms like Bilibili, YouTube, and Douyin. A 60-second video explaining a Transformer concept here, a 2-minute architectural teardown there. 

src/content/posts/zh/why-i-built-a-video-knowledge-base.md

@@ -4,7 +4,9 @@ description: "为什么平台收藏夹是学习的死胡同？记录我如何利
 pubDate: 2024-11-28
 category: case-studies
 tags: ["ai", "video-processing", "whisper", "astro", "knowledge-management"]
-draft: true
+ogImage: "/og/zh-why-i-built-a-video-knowledge-base.jpg"
+banner: "/banners/why-i-built-a-video-knowledge-base.jpg"
+draft: false
 ---
 
 和很多持续学习的开发者一样，我的 B站、YouTube 和抖音收藏夹里常年躺着数百个视频。这里有一段 60 秒讲透 Transformer 注意力机制的精华讲解，那里有一段 2 分钟拆解系统架构的实战经验。