feat: wire the mutagen tagger into the worker loop

worker/lyra_worker/main.py

@@ -4,7 +4,7 @@ from lyra_worker.claim import claim_next
 from lyra_worker.config import get_config
 from lyra_worker.db import wait_for_db
 from lyra_worker.pipeline import run_pipeline
-from lyra_worker.registry import build_adapters, build_resolver
+from lyra_worker.registry import build_adapters, build_resolver, build_tagger
 
 IDLE_SLEEP = 2.0
 
@@ -13,6 +13,7 @@ def run_forever() -> None:
     conn = wait_for_db()
     adapters = build_adapters(get_config(conn))
     resolver = build_resolver()
+    tagger = build_tagger()
     print(f"worker: {len(adapters)} adapter(s) enabled: {[a.name for a in adapters]}", flush=True)
     print("worker: waiting for jobs", flush=True)
     try:
@@ -22,7 +23,7 @@ def run_forever() -> None:
                 time.sleep(IDLE_SLEEP)
                 continue
             print(f"worker: claimed job {job_id}", flush=True)
-            run_pipeline(conn, job_id, adapters, resolver=resolver)
+            run_pipeline(conn, job_id, adapters, resolver=resolver, tagger=tagger)
             print(f"worker: finished job {job_id}", flush=True)
     finally:
         conn.close()

worker/lyra_worker/registry.py

@@ -1,4 +1,5 @@
 from lyra_worker._musicbrainz import MusicBrainzResolver
+from lyra_worker._mutagen import MutagenTagger
 from lyra_worker.adapters._slskd import SlskdClient
 from lyra_worker.adapters._streamrip import StreamripClient
 from lyra_worker.adapters._ytdlp import YtDlpClient
@@ -7,6 +8,7 @@ from lyra_worker.adapters.qobuz import QobuzAdapter
 from lyra_worker.adapters.soulseek import SoulseekAdapter
 from lyra_worker.adapters.youtube import YouTubeAdapter
 from lyra_worker.resolver import MbResolver
+from lyra_worker.tagger import Tagger
 
 
 def build_adapters(config: dict) -> list[SourceAdapter]:
@@ -26,3 +28,8 @@ def build_adapters(config: dict) -> list[SourceAdapter]:
 def build_resolver() -> MbResolver:
     """The MusicBrainz resolver used to canonicalize requests in intake."""
     return MusicBrainzResolver()
+
+
+def build_tagger() -> Tagger:
+    """The tagger that writes canonical metadata onto downloaded files."""
+    return MutagenTagger()