feat(music): 识别接口支持 MusicBrainz 数据源

- 选择 musicbrainz 数据源时非音频标题按音乐元数据解析
- 支持 艺术家 - 曲名 格式拆分艺术家后检索 MusicBrainz

tests/test_media_recognize_endpoint.py

@@ -5,6 +5,7 @@ import pytest
 
 from app.api.endpoints.media import recognize
 from app.core.context import MediaInfo
+from app.core.meta import MetaMusic
 from app.schemas.types import MediaType
 
 
@@ -58,3 +59,31 @@ def test_recognize_does_not_treat_non_path_title_as_file_path(title: str) -> Non
         asyncio.run(recognize(title=title, _=Mock()))
 
     meta_info_path.assert_not_called()
+
+
+def test_recognize_musicbrainz_source_parses_music_meta() -> None:
+    """MusicBrainz 数据源下普通标题应按音乐元数据解析并拆分艺术家。"""
+    chain = Mock()
+    chain.async_recognize_by_meta = AsyncMock(return_value=None)
+
+    with patch("app.api.endpoints.media.MediaChain", return_value=chain):
+        asyncio.run(recognize(title="周杰伦 - 晴天", source="musicbrainz", _=Mock()))
+
+    metainfo = chain.async_recognize_by_meta.await_args.args[0]
+    assert isinstance(metainfo, MetaMusic)
+    assert metainfo.title == "晴天"
+    assert metainfo.artists == ["周杰伦"]
+    assert chain.async_recognize_by_meta.await_args.kwargs.get("source") == "musicbrainz"
+
+
+def test_recognize_audio_file_title_uses_music_meta_without_source() -> None:
+    """音频文件名无需指定数据源即应进入音乐识别分支。"""
+    chain = Mock()
+    chain.async_recognize_by_meta = AsyncMock(return_value=None)
+
+    with patch("app.api.endpoints.media.MediaChain", return_value=chain):
+        asyncio.run(recognize(title="周杰伦 - 晴天.flac", _=Mock()))
+
+    metainfo = chain.async_recognize_by_meta.await_args.args[0]
+    assert isinstance(metainfo, MetaMusic)
+    assert metainfo.audio_format