feat: add real MusicBrainz resolver and opt-in live test

worker/tests/test_musicbrainz_live.py

@@ -0,0 +1,18 @@
+import os
+
+import pytest
+
+from lyra_worker._musicbrainz import MusicBrainzResolver
+
+pytestmark = pytest.mark.skipif(
+    not os.environ.get("LYRA_LIVE_TESTS"),
+    reason="live MusicBrainz test; set LYRA_LIVE_TESTS=1 to run",
+)
+
+
+def test_live_resolves_continuum():
+    target = MusicBrainzResolver(contact="lyra-tests@localhost").resolve("John Mayer", "Continuum")
+    assert target is not None
+    assert target.track_count and target.track_count >= 10  # Continuum has 12 tracks
+    assert "continuum" in target.album.casefold()
+    assert target.year == 2006