refactor(sdk): musicSdk 全量迁移至 TypeScript

musicSdk/request.ts

@@ -0,0 +1,8 @@
+// SDK 根请求模块（转接至 src/common/request.js）
+// musicSdk 内 `import { ... } from '../request.js'` 的解析目标
+
+import { httpFetch as rawHttpFetch } from '../src/common/request.js'
+import type { HttpRequestObject, HttpOptions } from './types.ts'
+
+export const httpFetch: (url: string, options?: HttpOptions) => HttpRequestObject =
+  rawHttpFetch as (url: string, options?: HttpOptions) => HttpRequestObject