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/tx/singer.ts

@@ -0,0 +1,181 @@
+import type { SongType, Quality, QualityInfo } from '../types.ts'
+
+import { formatPlayTime, sizeFormate } from '../index.ts'
+import { formatSingerName } from '../utils.ts'
+import { createMusicuFetch } from './utils/index.ts'
+
+export const filterMusicInfoItem = item => {
+  const types: SongType[] = []
+  const _types: Partial<Record<Quality, QualityInfo>> = {}
+  if (item.file.size_128mp3 != 0) {
+    let size = sizeFormate(item.file.size_128mp3)
+    types.push({ type: '128k', size })
+    _types['128k'] = {
+      size,
+    }
+  }
+  if (item.file.size_320mp3 !== 0) {
+    let size = sizeFormate(item.file.size_320mp3)
+    types.push({ type: '320k', size })
+    _types['320k'] = {
+      size,
+    }
+  }
+  if (item.file.size_flac !== 0) {
+    let size = sizeFormate(item.file.size_flac)
+    types.push({ type: 'flac', size })
+    _types.flac = {
+      size,
+    }
+  }
+  if (item.file.size_hires !== 0) {
+    let size = sizeFormate(item.file.size_hires)
+    types.push({ type: 'flac24bit', size })
+    _types.flac24bit = {
+      size,
+    }
+  }
+
+  const albumId = item.album.id ?? ''
+  const albumMid = item.album.mid ?? ''
+  const albumName = item.album.name ?? ''
+  return {
+    source: 'tx',
+    singer: formatSingerName(item.singer, 'name'),
+    name: item.title,
+    albumName,
+    albumId,
+    albumMid,
+    interval: formatPlayTime(item.interval),
+    songId: item.id,
+    songmid: item.mid,
+    strMediaMid: item.file.media_mid,
+    img: (albumId === '' || albumId === '空')
+      ? item.singer?.length ? `https://y.gtimg.cn/music/photo_new/T001R500x500M000${item.singer[0].mid}.jpg` : ''
+      : `https://y.gtimg.cn/music/photo_new/T002R500x500M000${albumMid}.jpg`,
+    types,
+    _types,
+    typeUrl: {},
+  }
+}
+
+
+// 歌手详情接口（musichallSinger.GetSingerDetail 等）已停用（104403）：
+// 歌手名/统计由 GetSingerSongList 与 GetAlbumList 合成，头像走固定图片 URL 规则
+export default {
+  /**
+   * 获取歌手信息
+   * @param {*} id
+   */
+  getInfo(id) {
+    return Promise.all([
+      createMusicuFetch({ req: { module: 'musichall.song_list_server', method: 'GetSingerSongList', param: { singerMid: id, order: 1, begin: 0, num: 1 } } }),
+      createMusicuFetch({ req: { module: 'music.musichallAlbum.AlbumListServer', method: 'GetAlbumList', param: { singerMid: id, order: 0, begin: 0, num: 1, songNumTag: 0, singerID: 0 } } }),
+    ]).then(([songBody, albumBody]) => {
+      if (songBody.req.code != 0 || albumBody.req.code != 0) throw new Error('get singer info faild.')
+      const songData = songBody.req.data
+      const albumData = albumBody.req.data
+      // 详情接口停用：歌手名从歌曲条目反查，头像用平台的固定图片 URL 规则
+      const singers = songData.songList?.[0]?.songInfo?.singer ?? []
+      const self = singers.find(s => s.mid === id) ?? singers[0]
+      return {
+        source: 'tx',
+        id,
+        info: {
+          name: self?.name ?? '',
+          desc: null,
+          avatar: `https://y.gtimg.cn/music/photo_new/T001R500x500M000${id}.jpg`,
+          gender: null,
+        },
+        count: {
+          music: songData.totalNum,
+          album: albumData.total,
+        },
+      }
+    })
+  },
+  /**
+   * 获取歌手专辑列表
+   * @param {*} id
+   * @param {*} page
+   * @param {*} limit
+   */
+  getAlbumList(id, page = 1, limit = 10) {
+    return createMusicuFetch({
+      req: {
+        module: 'music.musichallAlbum.AlbumListServer',
+        method: 'GetAlbumList',
+        param: {
+          singerMid: id,
+          order: 0,
+          begin: (page - 1) * limit,
+          num: limit,
+          songNumTag: 0,
+          singerID: 0,
+        },
+      },
+    }).then(body => {
+      if (body.req.code != 0) throw new Error('get singer album faild.')
+
+      const list = this.filterAlbumList(body.req.data.albumList)
+      return {
+        source: 'tx',
+        list,
+        limit,
+        page,
+        total: body.req.data.total,
+      }
+    })
+  },
+  /**
+   * 获取歌手歌曲列表
+   * @param {*} id
+   * @param {*} page
+   * @param {*} limit
+   */
+  async getSongList(id, page = 1, limit = 100) {
+    const body = await createMusicuFetch({
+      req: {
+        module: 'musichall.song_list_server',
+        method: 'GetSingerSongList',
+        param: {
+          singerMid: id,
+          order: 1,
+          begin: (page - 1) * limit,
+          num: limit,
+        },
+      },
+    })
+    if (body.req.code != 0) throw new Error('get singer song list faild.')
+
+    const list = this.filterSongList(body.req.data.songList)
+    return {
+      source: 'tx',
+      list,
+      limit,
+      page,
+      total: body.req.data.totalNum,
+    }
+  },
+  filterAlbumList(raw) {
+    return raw.map(item => {
+      return {
+        id: item.albumID,
+        mid: item.albumMid,
+        count: item.totalNum,
+        info: {
+          name: item.albumName,
+          author: item.singerName,
+          img: `https://y.gtimg.cn/music/photo_new/T002R500x500M000${item.albumMid}.jpg`,
+          desc: null,
+        },
+      }
+    })
+  },
+  filterSongList(raw) {
+    return raw.map(item => {
+      return filterMusicInfoItem(item.songInfo)
+    })
+  },
+}
+