feat(media): 对象存储 CDN - 支持阿里云 OSS 与腾讯云 COS 下载加速

合并平台与个人对象存储 CDN 下载域名配置，上传继续使用原始 Endpoint。\n\n后续修复对象路径二次编码并补充 CDN 访问控制说明。

web/src/services/api/auth.ts

@@ -252,6 +252,7 @@ export type AdminOSSSetting = {
     provider: "aliyun" | "tencent";
     region: string;
     endpoint: string;
+    cdnBaseUrl: string;
     bucket: string;
     accessKeyId: string;
     accessKeySecret?: string;

web/src/services/api/resources.ts

@@ -28,6 +28,7 @@ export type UserOSSSetting = {
     provider: "aliyun" | "tencent";
     region: string;
     endpoint: string;
+    cdnBaseUrl: string;
     bucket: string;
     accessKeyId: string;
     hasAccessKeySecret: boolean;
@@ -36,7 +37,7 @@ export type UserOSSSetting = {
     updatedAt?: string;
 };
 
-export type UserOSSSettingInput = Pick<UserOSSSetting, "enabled" | "provider" | "region" | "endpoint" | "bucket" | "accessKeyId" | "pathPrefix"> & {
+export type UserOSSSettingInput = Pick<UserOSSSetting, "enabled" | "provider" | "region" | "endpoint" | "cdnBaseUrl" | "bucket" | "accessKeyId" | "pathPrefix"> & {
     accessKeySecret?: string;
 };