feat: 위키 저장소 초기 커밋

- CLAUDE.md 운영 규칙
- wiki/ 정리된 지식 페이지 (Nuxt + Claude Code)
- raw/ 원본 자료
- reference/ Nuxt 4.x 공식 문서

Co-authored-by: Cursor <cursoragent@cursor.com>

reference/2.directory-structure/0.nuxt.md

@@ -0,0 +1,20 @@
+---
+title: ".nuxt"
+description: "Nuxt uses the .nuxt/ directory in development to generate your Vue application."
+head.title: ".nuxt/"
+navigation.icon: i-vscode-icons-folder-type-temp
+---
+
+::important
+This directory should be added to your [`.gitignore`](/docs/4.x/directory-structure/gitignore) file to avoid pushing the dev build output to your repository.
+::
+
+This directory is interesting if you want to learn more about the files Nuxt generates based on your directory structure.
+
+Nuxt also provides a Virtual File System (VFS) for modules to add templates to this directory without writing them to disk.
+
+You can explore the generated files by opening the [Nuxt DevTools](https://devtools.nuxt.com) in development mode and navigating to the **Virtual Files** tab.
+
+::warning
+You should not touch any files inside since the whole directory will be re-created when running [`nuxt dev`](/docs/4.x/api/commands/dev).
+::