适配讲解详情聚合接口

tests/unit/GlobalAudioPlayerLanguage.spec.ts

@@ -35,7 +35,36 @@ describe('全局讲解播放器语言切换', () => {
     vi.unstubAllGlobals()
   })
 
-  it('切换到粤语时立即中断旧音频，并使用 yue-HK 播放地址', async () => {
+  it('详情页提供语言变体播放地址时直接切换，不请求 play-info', async () => {
+    await player.play({
+      id: 'mandarin-audio',
+      name: '测试讲解',
+      audioUrl: '/museum-assets/audio/mandarin.mp3',
+      language: 'zh-CN'
+    }, {
+      source: {
+        targetType: 'STOP',
+        targetId: '1823450596800289',
+        lang: 'zh-CN'
+      }
+    })
+
+    await expect(player.switchLanguage('yue-HK', {
+      id: 'cantonese-audio',
+      name: '测试讲解',
+      audioUrl: '/museum-assets/audio/cantonese.mp3',
+      language: 'yue-HK'
+    })).resolves.toBe(true)
+
+    expect(repositoryMocks.getPlayInfo).not.toHaveBeenCalled()
+    expect(player.currentSource.value?.lang).toBe('yue-HK')
+    expect(player.currentAudio.value).toEqual(expect.objectContaining({
+      language: 'yue-HK',
+      audioUrl: '/museum-assets/audio/cantonese.mp3'
+    }))
+  })
+
+  it('未提供详情语言变体时保留 play-info 刷新回退', async () => {
     repositoryMocks.getPlayInfo.mockResolvedValue({
       playable: true,
       targetType: 'STOP',