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/4.api/1.components/1.dev-only.md

@@ -0,0 +1,51 @@
+---
+title: '<DevOnly>'
+description: Render components only during development with the <DevOnly> component.
+links:
+  - label: Source
+    icon: i-simple-icons-github
+    to: https://github.com/nuxt/nuxt/blob/main/packages/nuxt/src/app/components/dev-only.ts
+    size: xs
+---
+
+Nuxt provides the `<DevOnly>` component to render a component only during development.
+
+The content will not be included in production builds.
+
+```vue [app/pages/example.vue]
+<template>
+  <div>
+    <Sidebar />
+    <DevOnly>
+      <!-- this component will only be rendered during development -->
+      <LazyDebugBar />
+
+      <!-- if you ever require to have a replacement during production -->
+      <!-- be sure to test these using `nuxt preview` -->
+      <template #fallback>
+        <div><!-- empty div for flex.justify-between --></div>
+      </template>
+    </DevOnly>
+  </div>
+</template>
+```
+
+## Slots
+
+- `#fallback`: if you ever require to have a replacement during production.
+
+```vue
+<template>
+  <div>
+    <Sidebar />
+    <DevOnly>
+      <!-- this component will only be rendered during development -->
+      <LazyDebugBar />
+      <!-- be sure to test these using `nuxt preview` -->
+      <template #fallback>
+        <div><!-- empty div for flex.justify-between --></div>
+      </template>
+    </DevOnly>
+  </div>
+</template>
+```