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/musicSearch.ts

@@ -0,0 +1,119 @@
+// import { httpFetch } from '../request.ts'
+// import { weapi } from './utils/crypto.ts'
+import { sizeFormate, formatPlayTime } from '../index.ts'
+// import musicDetailApi from './musicDetail.ts'
+import { eapiRequest } from './utils/index.ts'
+
+export default {
+  limit: 30,
+  total: 0,
+  page: 0,
+  allPage: 1,
+  musicSearch(str, page, limit) {
+    // const searchRequest = eapiRequest('/api/cloudsearch/pc', {
+    //   s: str,
+    //   type: 1, // 1: 单曲, 10: 专辑, 100: 歌手, 1000: 歌单, 1002: 用户, 1004: MV, 1006: 歌词, 1009: 电台, 1014: 视频
+    //   limit,
+    //   total: page == 1,
+    //   offset: limit * (page - 1),
+    // })
+    const searchRequest = eapiRequest('/api/search/song/list/page', {
+      keyword: str,
+      needCorrect: '1',
+      channel: 'typing',
+      offset: limit * (page - 1),
+      scene: 'normal',
+      total: page == 1,
+      limit,
+    })
+    return searchRequest.promise.then(({ body }) => body)
+  },
+  getSinger(singers) {
+    let arr: any[] = []
+    singers.forEach(singer => {
+      arr.push(singer.name)
+    })
+    return arr.join('、')
+  },
+  handleResult(rawList) {
+    // console.log(rawList)
+    if (!rawList) return []
+    return rawList.map(item => {
+      item = item.baseInfo.simpleSongData
+      const types: Array<{ type: string, size: string | null }> = []
+      const _types: Record<string, { size: string | null }> = {}
+      let size
+
+      if (item.privilege.maxBrLevel == 'hires') {
+        size = item.hr ? sizeFormate(item.hr.size) : null
+        types.push({ type: 'flac24bit', size })
+        _types.flac24bit = {
+          size,
+        }
+      }
+      switch (item.privilege.maxbr) {
+        case 999000:
+          size = item.sq ? sizeFormate(item.sq.size) : null
+          types.push({ type: 'flac', size })
+          _types.flac = {
+            size,
+          }
+        case 320000:
+          size = item.h ? sizeFormate(item.h.size) : null
+          types.push({ type: '320k', size })
+          _types['320k'] = {
+            size,
+          }
+        case 192000:
+        case 128000:
+          size = item.l ? sizeFormate(item.l.size) : null
+          types.push({ type: '128k', size })
+          _types['128k'] = {
+            size,
+          }
+      }
+
+      types.reverse()
+
+      return {
+        singer: this.getSinger(item.ar),
+        name: item.name,
+        albumName: item.al.name,
+        albumId: item.al.id,
+        source: 'wy',
+        interval: formatPlayTime(item.dt / 1000),
+        songmid: item.id,
+        img: item.al.picUrl,
+        lrc: null,
+        types,
+        _types,
+        typeUrl: {},
+      }
+    })
+  },
+  search(str, page = 1, limit, retryNum = 0) {
+    if (++retryNum > 3) return Promise.reject(new Error('try max num'))
+    if (limit == null) limit = this.limit
+    return this.musicSearch(str, page, limit).then(result => {
+      // console.log(result)
+      if (!result || result.code !== 200) return this.search(str, page, limit, retryNum)
+      let list = this.handleResult(result.data.resources || [])
+      // console.log(list)
+
+      if (list == null) return this.search(str, page, limit, retryNum)
+
+      this.total = result.data.totalCount || 0
+      this.page = page
+      this.allPage = Math.ceil(this.total / this.limit)
+
+      return {
+        list,
+        allPage: this.allPage,
+        limit: this.limit,
+        total: this.total,
+        source: 'wy',
+      }
+      // return result.data
+    })
+  },
+}