fix: getItemCategoryTree serverFetch 호출 수정

- URL에 NEXT_PUBLIC_API_URL 추가
- serverFetch 반환값 { response, error } 구조로 수정

src/components/quotes/actions.ts

@@ -1148,12 +1148,19 @@ export async function getItemCategoryTree(): Promise<{
   __authError?: boolean;
 }> {
   try {
-    const response = await serverFetch('/api/v1/categories/tree?code_group=item_category&only_active=true');
+    const url = `${process.env.NEXT_PUBLIC_API_URL}/api/v1/categories/tree?code_group=item_category&only_active=true`;
+    const { response, error } = await serverFetch(url, { method: 'GET' });
 
-    if (!response.ok) {
-      if (response.status === 401) {
-        return { success: false, data: [], error: '인증이 필요합니다.', __authError: true };
-      }
+    if (error) {
+      return {
+        success: false,
+        data: [],
+        error: error.message,
+        __authError: error.code === 'UNAUTHORIZED',
+      };
+    }
+
+    if (!response || !response.ok) {
       return { success: false, data: [], error: '카테고리 조회 실패' };
     }