refactor(sdk): 审计 P2 卫生项清理——请求层收敛与死代码清除

- 删除旧 sdk/request.ts，全部 import 收敛到 sdk/common/request.ts（85 文件）
- 注释死代码 630+ 行、裸 console.log 吞错 6 处、未使用符号 26 处清零
- bili 状态校验去重；utils DNS 预解析失败日志改 warn 带上下文
- CODE-AUDIT.md：第四节 P2 清理记录 + 第八节线索逐条复核结论（kw/kg/tx/wy parse 骨架相似实质各异，不抽公共层）

sdk/joox/album.ts

@@ -5,7 +5,7 @@
 // 兜底：www.joox.com/<region>/album/<id> SSR __NEXT_DATA__.props.pageProps.albumData（上游做法，需 X-Forwarded-For）
 // 链接解析：ParseAlbum 的正则与裸 ID 规则同上游。
 
-import { httpFetch } from '../request.ts'
+import { httpFetch } from '../common/request.ts'
 import {
   jooxHeaders,
   jooxSign,

sdk/joox/lyric.ts

@@ -6,7 +6,7 @@
 // 解码：base64 → UTF-8 → HTML 实体（& 等）→ { lyric, tlyric: '' }
 // 统一接口约定：{ promise, cancelHttp }；promise resolve → { lyric, tlyric }
 
-import { httpFetch } from '../request.ts'
+import { httpFetch } from '../common/request.ts'
 import { jooxHeaders, decodeJooxLyric, normalizeJooxID, firstNonEmpty } from './util.ts'
 import { buildTrackUrl } from './musicInfo.ts'
 

sdk/joox/musicInfo.ts

@@ -9,7 +9,7 @@
 // 返回体含 play_url_list / refrain_url / lrc_content(base64) / qrc_content(base64) /
 //   has_hq / has_hifi / vip_flag / node_is_preview 等。
 
-import { httpFetch } from '../request.ts'
+import { httpFetch } from '../common/request.ts'
 import {
   jooxHeaders,
   jooxSign,

sdk/joox/musicSearch.ts

@@ -4,13 +4,13 @@
 // 该接口无分页参数（上游也未分页），page 参数仅为统一契约保留；allPage 恒为 1。
 // 实测（2026-10-02）：英文/中文关键词均 HTTP 200。
 
-import { httpFetch } from '../request.ts'
+import { httpFetch } from '../common/request.ts'
 import { jooxHeaders } from './util.ts'
 import { jooxSongFromSearch } from './song.ts'
 
 const SEARCH_URL = 'https://cache.api.joox.com/openjoox/v3/search'
 
-export const search = async(keyword: string, page = 1, limit = 20) => {
+export const search = async(keyword: string, _page = 1, limit = 20) => {
   const url = `${SEARCH_URL}?country=sg&lang=zh_cn&keyword=${encodeURIComponent(String(keyword ?? ''))}`
   const { statusCode, body } = await httpFetch(url, { headers: jooxHeaders(), timeout: 20000 }).promise as any
   if (statusCode != 200 || !body?.section_list) {

sdk/joox/parse.ts

@@ -6,8 +6,8 @@
 import { normalizeJooxID } from './util.ts'
 import { getTrackDetail, pickTrackUrl } from './musicInfo.ts'
 import { jooxSongFromDetail } from './song.ts'
-import { getAlbumDetail, parseAlbum } from './album.ts'
-import { getPlaylistDetail, parsePlaylist } from './playlist.ts'
+import { parseAlbum } from './album.ts'
+import { parsePlaylist } from './playlist.ts'
 
 /** 歌曲链接 → Song（上游 Parse 的正则与裸 ID 规则） */
 export const parseSong = async(link: string) => {

sdk/joox/playlist.ts

@@ -7,7 +7,7 @@
 // 分类：www.joox.com/sg/playlist（302 → /<region> 首页）__NEXT_DATA__.props.pageProps.mlList
 // 链接解析：joox.com/{region}/playlist/<id>、playlistid/id 查询参数、裸 ID
 
-import { httpFetch } from '../request.ts'
+import { httpFetch } from '../common/request.ts'
 import {
   jooxHeaders,
   jooxSign,

sdk/joox/util.ts

@@ -11,7 +11,7 @@
 //     在签名参数里作为 uid/usk 参与（可拿到完整曲目/更高档位）。
 
 import crypto from 'node:crypto'
-import { httpFetch } from '../request.ts'
+import { httpFetch } from '../common/request.ts'
 import { getCredentials } from '../auth/store.ts'
 
 export const JOOX_UA = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36'