feat: monitor sweep, real MB browser, and worker-loop wiring

worker/lyra_worker/registry.py

@@ -1,3 +1,4 @@
+from lyra_worker._mbbrowser import MusicBrainzBrowser
 from lyra_worker._musicbrainz import MusicBrainzResolver
 from lyra_worker._mutagen import MutagenTagger
 from lyra_worker.adapters._slskd import SlskdClient
@@ -7,6 +8,7 @@ from lyra_worker.adapters.base import SourceAdapter
 from lyra_worker.adapters.qobuz import QobuzAdapter
 from lyra_worker.adapters.soulseek import SoulseekAdapter
 from lyra_worker.adapters.youtube import YouTubeAdapter
+from lyra_worker.browser import MbBrowser
 from lyra_worker.resolver import MbResolver
 from lyra_worker.tagger import Tagger
 
@@ -33,3 +35,8 @@ def build_resolver() -> MbResolver:
 def build_tagger() -> Tagger:
     """The tagger that writes canonical metadata onto downloaded files."""
     return MutagenTagger()
+
+
+def build_browser() -> MbBrowser:
+    """The MusicBrainz browser used by the background monitor."""
+    return MusicBrainzBrowser()