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/6.nuxt-error-boundary.md

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+---
+title: "<NuxtErrorBoundary>"
+description: The <NuxtErrorBoundary> component handles client-side errors happening in its default slot.
+links:
+  - label: Source
+    icon: i-simple-icons-github
+    to: https://github.com/nuxt/nuxt/blob/main/packages/nuxt/src/app/components/nuxt-error-boundary.vue
+    size: xs
+---
+
+::tip
+The `<NuxtErrorBoundary>` uses Vue's [`onErrorCaptured`](https://vuejs.org/api/composition-api-lifecycle#onerrorcaptured) hook under the hood.
+::
+
+## Events
+
+- `@error`: Event emitted when the default slot of the component throws an error.
+
+  ```vue
+  <template>
+    <NuxtErrorBoundary @error="logSomeError">
+      <!-- ... -->
+    </NuxtErrorBoundary>
+  </template>
+  ```
+
+## Slots
+
+- `#error`: Specify a fallback content to display in case of error.
+
+  ```vue
+  <template>
+    <NuxtErrorBoundary>
+      <!-- ... -->
+      <template #error="{ error, clearError }">
+        <p>An error occurred: {{ error }}</p>
+
+        <button @click="clearError">
+          Clear error
+        </button>
+      </template>
+    </NuxtErrorBoundary>
+  </template>
+  ```
+
+:read-more{to="/docs/4.x/getting-started/error-handling"}
+
+## Examples
+
+### Accessing `error` and `clearError` in script
+
+You can access `error` and `clearError` properties within the component's script as below:
+
+```vue
+<template>
+  <NuxtErrorBoundary ref="errorBoundary">
+    <!-- ... -->
+  </NuxtErrorBoundary>
+</template>
+
+<script setup lang="ts">
+const errorBoundary = useTemplateRef('errorBoundary')
+
+// errorBoundary.value?.error
+// errorBoundary.value?.clearError()
+</script>
+```