refactor: 架构整固——分层单向化、全量 TypeScript、直接运行

- 移除 bd/mg 两平台及磁盘残留产物；清理 api-test 死脚本、musicSdk/message+options 死模块、infSign vendor
- musicSdk/ 改名 sdk/；src/common、src/auth、src/apis 整体移入 sdk/，依赖方向定为 src → sdk 严格单向
- src/ 手写 JS 全量转 .ts，删除 JS 类型垫片 modules.d.ts；源码 import 统一 .ts 后缀
- Node 原生类型剥离直接运行 .ts（engines >=22.18），取消 tsc 发射产物，tsc 仅类型检查（pnpm typecheck）
- 删除 kwdes 备用实现与 src/index.ts 转发垫片；测试移至 test/smoke-test.ts
- common/request.ts 补显式导出类型；修复 set-cookie 单值形态、ApiError 类字段等隐患

验证：tsc 零错误，smoke-test 41/41

sdk/kw/index.ts

@@ -0,0 +1,105 @@
+import { httpFetch } from '../request.ts'
+import tipSearch from './tipSearch.ts'
+import musicSearch from './musicSearch.ts'
+import { formatSinger } from './util.ts'
+import leaderboard from './leaderboard.ts'
+import lyric from './lyric.ts'
+import pic from './pic.ts'
+import { apis } from '../api-source.ts'
+import songList from './songList.ts'
+import hotSearch from './hotSearch.ts'
+import comment from './comment.ts'
+import album from './album.ts'
+import type { HttpRequestObject } from '../types.ts'
+
+const kw = {
+  _musicInfoRequestObj: null as HttpRequestObject | null,
+  _musicInfoPromiseCancelFn: null,
+  _musicPicRequestObj: null as HttpRequestObject | null,
+  _musicPicPromiseCancelFn: null,
+  album,
+  // context: null,
+
+
+  // init(context) {
+  //   if (this.isInited) return
+  //   this.isInited = true
+  //   this.context = context
+
+  //   // this.musicSearch.search('我又想你了').then(res => {
+  //   //   console.log(res)
+  //   // })
+
+  //   // this.getMusicUrl('62355680', '320k').then(url => {
+  //   //   console.log(url)
+  //   // })
+  // },
+
+  tipSearch,
+  musicSearch,
+  leaderboard,
+  songList,
+  hotSearch,
+  comment,
+  getLyric(songInfo, isGetLyricx) {
+    // let singer = songInfo.singer.indexOf('、') > -1 ? songInfo.singer.split('、')[0] : songInfo.singer
+    return lyric.getLyric(songInfo, isGetLyricx)
+  },
+  handleMusicInfo(songInfo) {
+    return this.getMusicInfo(songInfo).then(info => {
+      // console.log(JSON.stringify(info))
+      songInfo.name = info.name
+      songInfo.singer = formatSinger(info.artist)
+      songInfo.img = info.pic
+      songInfo.albumName = info.album
+      return songInfo
+      // return Object.assign({}, songInfo, {
+      //   name: info.name,
+      //   singer: formatSinger(info.artist),
+      //   img: info.pic,
+      //   albumName: info.album,
+      // })
+    })
+  },
+
+  getMusicUrl(songInfo, type) {
+    return apis('kw').getMusicUrl!(songInfo, type)
+  },
+
+  getMusicInfo(songInfo) {
+    if (this._musicInfoRequestObj) this._musicInfoRequestObj.cancelHttp()
+    this._musicInfoRequestObj = httpFetch(`http://www.kuwo.cn/api/www/music/musicInfo?mid=${songInfo.songmid}`)
+    return this._musicInfoRequestObj!.promise.then(({ body }) => {
+      return body.code === 200 ? body.data : Promise.reject(new Error(body.msg))
+    })
+  },
+
+  getMusicUrls(musicInfo, cb) {
+    let tasks: Array<Promise<any>> = []
+    let songId = musicInfo.songmid
+    musicInfo.types.forEach(type => {
+      tasks.push(kw.getMusicUrl(songId, type.type).promise)
+    })
+    Promise.all(tasks).then(urlInfo => {
+      let typeUrl = {}
+      urlInfo.forEach(info => {
+        typeUrl[info.type] = info.url
+      })
+      cb(typeUrl)
+    })
+  },
+
+  getPic(songInfo) {
+    return pic.getPic(songInfo)
+  },
+
+  getMusicDetailPageUrl(songInfo) {
+    return `http://www.kuwo.cn/play_detail/${songInfo.songmid}`
+  },
+
+  // init() {
+  //   return getToken()
+  // },
+}
+
+export default kw