feat: 构建系统重构 + VCHSM 架构迁移 + 右键菜单修复 + 尺寸参数统一

## 构建、打包与分发系统重构 (build/)

- 构建系统收敛至 build/ 目录：build.mjs + electron-builder.js + 6 个脚本

- electron-builder 配置从 package.json 提取为 build/electron-builder.js

- 新增 --edition (personal/enterprise) 和 --channel (stable/beta/alpha) 参数

- OSS 路径按渠道隔离

- 新增 pre-build-check.mjs：Git/CHANGELOG/版本/环境变量校验

- 新增 bump-version.mjs：版本号管理 + CHANGELOG 自动生成

- updater.ts 发送 channel/edition/deviceFingerprint

- 新增 src/shared/utils/rollout.ts 灰度测试工具

- 新增 10 条 NPM 脚本

## VCHSM 五层架构迁移

- 7 个业务模块 + ~500 处导入路径同步

## 修复

- MediaCardContextMenu 改用共享 ContextMenu 组件

- ComboBox 尺寸参数显示统一 (size-format.ts)

## 文档

- UpdateA.md / build/README.md / README.md / .env.example 更新

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

src/modules/home/controllers/banner-api.ts

@@ -0,0 +1,59 @@
+// ============================================================
+// Banner 模块 — 首页轮播图 API
+// GET /api/v1/banners
+// ============================================================
+
+import {get} from '@/shared/services/http';
+
+// ---------- 路由常量 ----------
+
+const BannerUrlObj = {
+    list: '/api/v1/creatives',
+} as const;
+
+// ---------- 类型 ----------
+
+// ============================================================
+// Banner 分类常量
+// ============================================================
+
+export const BannerCategoryEnum = {
+    Promotion: "promotion",
+    Banner: "banner",
+} as const;
+
+export type BannerCategoryValue = typeof BannerCategoryEnum[keyof typeof BannerCategoryEnum];
+
+export const BannerCategoryLabelMap: Record<BannerCategoryValue, string> = {
+    [BannerCategoryEnum.Promotion]: "推广",
+    [BannerCategoryEnum.Banner]: "轮播",
+};
+
+/** 单条 Banner */
+export interface Banner {
+    id: number;
+    title: string;
+    content: "真人素材提示";
+    image_url: string;
+    link_url?: string;
+    category: BannerCategoryValue;
+    vip_level_id?: number;
+    sort_order: number;
+    is_active: boolean;
+    created_by: string;
+    created_at: Date;
+    updated_at: Date;
+}
+
+/** Banner 列表响应 */
+export type BannerListResponse = Banner[];
+
+// ---------- API ----------
+
+/**
+ * 获取 Banner 轮播图列表
+ * GET /api/v1/banners
+ */
+export function fetchBanners(signal?: AbortSignal): Promise<BannerListResponse> {
+    return get<BannerListResponse>(BannerUrlObj.list, undefined, { signal });
+}