feat: kg 源搜索改用 AndroidFilter 接口并提供 albumAudioId (#2849)

将搜索接口 platform 从 WebFilter 切换到 AndroidFilter，新接口返回
MixSongID（即 album_audio_id），用于后续歌词精确搜索。

- songmid 各处仍保持原取值（Audioid / audio_id）不变，避免影响
  既有歌曲 id 与旧收藏/列表数据
- 所有歌曲列表产出点均新增 albumAudioId 字段：
    musicSearch(MixSongID)、songList 顶层(album_audio_id)、
    songList 详情/leaderboard/musicInfo(audio_group_id / album_audio_id)
- music.d.ts 的 MusicInfoMeta_kg 增加 albumAudioId 字段，
  tools.ts 新旧格式双向转换中保留，确保持久化后不丢失

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/common/types/music.d.ts

@@ -58,6 +58,7 @@ declare namespace LX {
       qualitys: MusicQualityTypeKg[]
       _qualitys: _MusicQualityTypeKg
       hash: string // 歌曲hash
+      albumAudioId?: string // 专辑内歌曲ID(MixSongID)，用于歌词精确搜索
     }
     interface MusicInfo_kg extends MusicInfoBase<'kg'> {
       meta: MusicInfoMeta_kg

src/common/utils/tools.ts

@@ -35,6 +35,7 @@ export const toNewMusicInfo = (oldMusicInfo: any): LX.Music.MusicInfo => {
     switch (oldMusicInfo.source) {
       case 'kg':
         meta.hash = oldMusicInfo.hash
+        meta.albumAudioId = oldMusicInfo.albumAudioId
         newInfo.id = oldMusicInfo.songmid + '_' + oldMusicInfo.hash
         break
       case 'tx':
@@ -79,6 +80,7 @@ export const toOldMusicInfo = (minfo: LX.Music.MusicInfo) => {
     switch (minfo.source) {
       case 'kg':
         oInfo.hash = minfo.meta.hash
+        oInfo.albumAudioId = minfo.meta.albumAudioId
         break
       case 'tx':
         oInfo.strMediaMid = minfo.meta.strMediaMid