CHORE(merge): merge from develop

- Initial setup and all features from develop branch
- Includes: auth, deploy, docker, style fixes
- K3S deployment configuration

nextjs/lib/services/announcement.ts

@@ -0,0 +1,87 @@
+import { apiGet, apiPost, apiDelete } from "@/lib/api";
+import { API_ENDPOINTS } from "@/const";
+import { PaginatedResponse } from "@/lib/utils";
+
+export interface AnnouncementAuthor {
+  userId: string;
+  userName: string;
+}
+
+export interface AnnouncementFile {
+  id: number;
+  fileKey: string;
+  fileName: string;
+  fileSize?: number | null;
+  mimeType?: string | null;
+  createdAt: string;
+  updatedAt: string;
+  signedUrl?: string;
+}
+
+export interface Announcement {
+  id: number;
+  title: string;
+  content: string;
+  isImportant: boolean;
+  viewCount: number;
+  authorId: number;
+  createdAt: string;
+  updatedAt: string;
+  author: AnnouncementAuthor;
+  files?: AnnouncementFile[];
+}
+
+export interface CreateAnnouncementData {
+  title: string;
+  content?: string;
+  isImportant: boolean;
+  authorId: number;
+  files?: {
+    fileKey: string;
+    fileName: string;
+    fileSize?: number;
+    mimeType?: string;
+  }[];
+}
+
+export type AnnouncementPaginatedResponse = PaginatedResponse<Announcement>;
+
+/**
+ * 공지사항 목록 조회 (pagination)
+ */
+export async function getAnnouncements(
+  page = 1,
+  limit = 10
+): Promise<AnnouncementPaginatedResponse> {
+  const url = `${API_ENDPOINTS.ANNOUNCEMENT.BASE}?page=${page}&limit=${limit}`;
+  const response = await fetch(url);
+  const result = await response.json();
+  return {
+    data: result.data,
+    pagination: result.pagination,
+  };
+}
+
+/**
+ * 공지사항 상세 조회
+ */
+export async function getAnnouncementById(id: number): Promise<Announcement> {
+  return apiGet<Announcement>(API_ENDPOINTS.ANNOUNCEMENT.BY_ID(id));
+}
+
+/**
+ * 공지사항 생성
+ */
+export async function createAnnouncement(
+  data: CreateAnnouncementData
+): Promise<Announcement> {
+  return apiPost<Announcement>(API_ENDPOINTS.ANNOUNCEMENT.BASE, data);
+}
+
+/**
+ * 공지사항 삭제
+ */
+export async function deleteAnnouncement(id: number): Promise<void> {
+  return apiDelete<void>(API_ENDPOINTS.ANNOUNCEMENT.BY_ID(id));
+}
+