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/wy/singer.ts

@@ -0,0 +1,155 @@
+import { eapiRequest } from './utils/index.ts'
+import { formatPlayTime, sizeFormate } from '../index.ts'
+import { formatSingerName } from '../utils.ts'
+
+export default {
+  /**
+   * 获取歌手信息
+   * @param {*} id
+   */
+  getInfo(id) {
+    return eapiRequest('/api/artist/head/info/get', { id }).promise.then(({ body }) => {
+      if (!body || body.code != 200) throw new Error('get singer info faild.')
+      // 响应结构为 { code, data: { artist: { ... } } }，无 body.user
+      const artist = body.data?.artist
+      if (!artist) throw new Error('get singer info faild.')
+      return {
+        source: 'wy',
+        id: artist.id,
+        info: {
+          name: artist.name,
+          desc: artist.briefDesc,
+          avatar: artist.avatar ?? artist.cover ?? null,
+          gender: null,
+        },
+        count: {
+          music: artist.musicSize,
+          album: artist.albumSize,
+        },
+      }
+    })
+  },
+  /**
+   * 获取歌手歌曲列表
+   * @param {*} id
+   * @param {*} page
+   * @param {*} limit
+   */
+  getSongList(id, page = 1, limit = 100) {
+    return eapiRequest('/api/v2/artist/songs', {
+      id,
+      limit,
+      offset: (page - 1) * limit,
+    }).promise.then(({ body }) => {
+      if (!body.songs || body.code != 200) throw new Error('get singer song list faild.')
+
+      const list = this.filterSongList(body.songs)
+      return {
+        list,
+        limit,
+        page,
+        total: body.total,
+        source: 'wy',
+      }
+    })
+  },
+  /**
+   * 获取歌手专辑列表
+   * @param {*} id
+   * @param {*} page
+   * @param {*} limit
+   */
+  getAlbumList(id, page = 1, limit = 10) {
+    return eapiRequest(`/api/artist/albums/${id}`, {
+      limit,
+      offset: (page - 1) * limit,
+    }).promise.then(({ body }) => {
+      if (!body.hotAlbums || body.code != 200) throw new Error('get singer album list faild.')
+
+      const list = this.filterAlbumList(body.hotAlbums)
+      return {
+        source: 'wy',
+        list,
+        limit,
+        page,
+        total: body.artist.albumSize,
+      }
+    })
+  },
+  filterAlbumList(raw) {
+    const list: any[] = []
+    raw.forEach(item => {
+      if (!item.id) return
+      list.push({
+        id: item.id,
+        count: item.size,
+        info: {
+          name: item.name,
+          author: formatSingerName(item.artists),
+          img: item.picUrl,
+          desc: null,
+        },
+      })
+    })
+    return list
+  },
+  filterSongList(raw) {
+    const list: any[] = []
+    raw.forEach(item => {
+      if (!item.id) return
+
+      const types: Array<{ type: string, size: string | null }> = []
+      const _types: Record<string, { size: string | null }> = {}
+      let size
+      item.privilege.chargeInfoList.forEach(i => {
+        switch (i.rate) {
+          case 128000:
+            size = item.lMusic ? sizeFormate(item.lMusic.size) : null
+            types.push({ type: '128k', size })
+            _types['128k'] = {
+              size,
+            }
+            break
+          case 320000:
+            size = item.hMusic ? sizeFormate(item.hMusic.size) : null
+            types.push({ type: '320k', size })
+            _types['320k'] = {
+              size,
+            }
+            break
+          case 999000:
+            size = item.sqMusic ? sizeFormate(item.sqMusic.size) : null
+            types.push({ type: 'flac', size })
+            _types.flac = {
+              size,
+            }
+            break
+          case 1999000:
+            size = item.hrMusic ? sizeFormate(item.hrMusic.size) : null
+            types.push({ type: 'flac24bit', size })
+            _types.flac24bit = {
+              size,
+            }
+            break
+        }
+      })
+
+      list.push({
+        singer: formatSingerName(item.artists),
+        name: item.name,
+        albumName: item.album.name,
+        albumId: item.album.id,
+        songmid: item.id,
+        source: 'wy',
+        interval: formatPlayTime((item.dt ?? item.duration) / 1000),
+        img: item.album?.picUrl ?? null,
+        lrc: null,
+        otherSource: null,
+        types,
+        _types,
+        typeUrl: {},
+      })
+    })
+    return list
+  },
+}