refactor(WEB): 전체 actions.ts에 공통 API 유틸 적용

- buildApiUrl / executePaginatedAction 패턴으로 전환 (40+ actions 파일)
- 직접 URLSearchParams 조립 → buildApiUrl 유틸 사용
- 수동 페이지네이션 메타 변환 → executePaginatedAction 자동 처리
- HandoverReportDocumentModal, OrderDocumentModal 개선
- 급여관리 SalaryManagement 코드 개선
- CLAUDE.md Server Action 공통 유틸 규칙 정리

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/settings/PopupManagement/actions.ts

@@ -14,12 +14,11 @@
 
 import { isNextRedirectError } from '@/lib/utils/redirect-error';
 import { executeServerAction, type ActionResult } from '@/lib/api/execute-server-action';
+import { buildApiUrl } from '@/lib/api/query-params';
 import type { PaginatedApiResponse } from '@/lib/api/types';
 import type { Popup, PopupFormData } from './types';
 import { transformApiToFrontend, transformFrontendToApi, type PopupApiData } from './utils';
 
-const API_URL = process.env.NEXT_PUBLIC_API_URL;
-
 // ============================================
 // API 함수
 // ============================================
@@ -32,15 +31,12 @@ export async function getPopups(params?: {
   size?: number;
   status?: string;
 }): Promise<Popup[]> {
-  const searchParams = new URLSearchParams();
-  if (params?.page) searchParams.set('page', String(params.page));
-  if (params?.size) searchParams.set('size', String(params.size));
-  if (params?.status && params.status !== 'all') {
-    searchParams.set('status', params.status);
-  }
-
   const result = await executeServerAction({
-    url: `${API_URL}/api/v1/popups?${searchParams.toString()}`,
+    url: buildApiUrl('/api/v1/popups', {
+      page: params?.page,
+      size: params?.size,
+      status: params?.status !== 'all' ? params?.status : undefined,
+    }),
     transform: (data: PaginatedApiResponse<PopupApiData>) => data.data.map(transformApiToFrontend),
     errorMessage: '팝업 목록 조회에 실패했습니다.',
   });
@@ -52,7 +48,7 @@ export async function getPopups(params?: {
  */
 export async function getPopupById(id: string): Promise<Popup | null> {
   const result = await executeServerAction({
-    url: `${API_URL}/api/v1/popups/${id}`,
+    url: buildApiUrl(`/api/v1/popups/${id}`),
     transform: (data: PopupApiData) => transformApiToFrontend(data),
     errorMessage: '팝업 조회에 실패했습니다.',
   });
@@ -66,7 +62,7 @@ export async function createPopup(
   data: PopupFormData
 ): Promise<ActionResult<Popup>> {
   return executeServerAction({
-    url: `${API_URL}/api/v1/popups`,
+    url: buildApiUrl('/api/v1/popups'),
     method: 'POST',
     body: transformFrontendToApi(data),
     transform: (data: PopupApiData) => transformApiToFrontend(data),
@@ -82,7 +78,7 @@ export async function updatePopup(
   data: PopupFormData
 ): Promise<ActionResult<Popup>> {
   return executeServerAction({
-    url: `${API_URL}/api/v1/popups/${id}`,
+    url: buildApiUrl(`/api/v1/popups/${id}`),
     method: 'PUT',
     body: transformFrontendToApi(data),
     transform: (data: PopupApiData) => transformApiToFrontend(data),
@@ -95,7 +91,7 @@ export async function updatePopup(
  */
 export async function deletePopup(id: string): Promise<ActionResult> {
   return executeServerAction({
-    url: `${API_URL}/api/v1/popups/${id}`,
+    url: buildApiUrl(`/api/v1/popups/${id}`),
     method: 'DELETE',
     errorMessage: '팝업 삭제에 실패했습니다.',
   });