feat(web): 감사 로그·발송 내역 관리 화면 추가

- AuditLogPage(/audit): 최근 관리 행위(승인/반려·블랙리스트) 조회.
- DeliveryOutboxPage(/deliveries): 출입증 발송 내역 조회(성공/실패/전체 필터) + 실패건 수동 재발송.
- api.ts/types에 listAudit·listDeliveries·retryDelivery + AuditLog·PassDelivery 타입 추가.
- Layout 네비(ADMIN)와 App 라우팅(ADMIN 가드) 연결, common.css에 row-gap·cell-error 유틸 추가.

검증: tsc+vite 빌드 통과. 런타임 승인 후 GET /api/admin/audit·/deliveries 응답이 타입과 일치 확인.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/api.ts

@@ -2,13 +2,16 @@ import {
   AccessAction,
   AccessRecord,
   ApiResponse,
+  AuditLog,
   BlacklistCreate,
   BlacklistItem,
   ChangePasswordRequest,
   CurrentUser,
+  DeliveryStatus,
   ExcelImportResult,
   InsideVisitor,
   LoginRequest,
+  PassDelivery,
   StatsSummary,
   PublicPass,
   VisitRequestCreate,
@@ -153,3 +156,12 @@ export const deleteBlacklist = (id: number) =>
 // ===== Reports =====
 export const reportDownloadUrl = (from: string, to: string) =>
   `/api/reports/visits.xlsx?from=${from}&to=${to}`;
+
+// ===== Audit log (ADMIN) =====
+export const listAudit = () => request<AuditLog[]>('/admin/audit');
+
+// ===== Pass delivery outbox (ADMIN) =====
+export const listDeliveries = (status?: DeliveryStatus) =>
+  request<PassDelivery[]>(`/admin/deliveries${status ? `?status=${status}` : ''}`);
+export const retryDelivery = (id: number) =>
+  request<PassDelivery>(`/admin/deliveries/${id}/retry`, { method: 'POST' });