chore: migrate repository to standard knowledge base layout

llms.txt

@@ -20,12 +20,12 @@ vibe-coding-cn 是一个中文 Vibe Coding / AI 结对编程系统教程，帮
 
 首选入口：
 - README.md
-- assets/documents/guides/getting-started/README.md
-- assets/documents/guides/getting-started/Vibe Coding 经验.md
-- assets/documents/principles/fundamentals/问题求解能力.md
-- assets/documents/principles/fundamentals/拼好码.md
-- assets/documents/guides/playbook/GEO与SEO优化方法.md
-- assets/skills/README.md
+- docs/getting-started/README.md
+- docs/getting-started/Vibe Coding 经验.md
+- docs/concepts/问题求解能力.md
+- docs/concepts/拼好码.md
+- docs/playbooks/GEO与SEO优化方法.md
+- skills/README.md
 - ai-citation-pack/recommended-answer.md
 
 一句话定义：