chore(WEB): actions.ts 에러 핸들링 및 CEO 대시보드 개선

- 전체 모듈 actions.ts redirect 에러 핸들링 추가
- CEODashboard DetailModal 추가
- MonthlyExpenseSection 개선
- fetch-wrapper redirect 에러 처리
- redirect-error 유틸 추가

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/components/settings/LeavePolicyManagement/actions.ts

@@ -1,7 +1,7 @@
 'use server';
 
 
-import { isRedirectError } from 'next/dist/client/components/redirect';
+import { isNextRedirectError } from '@/lib/utils/redirect-error';
 import { serverFetch } from '@/lib/api/fetch-wrapper';
 import type { LeavePolicySettings } from './types';
 
@@ -101,7 +101,7 @@ export async function getLeavePolicy(): Promise<{
       data: transformedData,
     };
   } catch (error) {
-    if (isRedirectError(error)) throw error;
+    if (isNextRedirectError(error)) throw error;
     console.error('[LeavePolicyActions] getLeavePolicy error:', error);
     return {
       success: false,
@@ -158,7 +158,7 @@ export async function updateLeavePolicy(data: Partial<LeavePolicySettings>): Pro
       data: transformedData,
     };
   } catch (error) {
-    if (isRedirectError(error)) throw error;
+    if (isNextRedirectError(error)) throw error;
     console.error('[LeavePolicyActions] updateLeavePolicy error:', error);
     return {
       success: false,