cb2f9a2ea2
Second go-round of the same shape of bug: tracks has file_size + file_format NOT NULL (0002_core_library.up.sql) and my GC test seed omitted both. The previous fix only addressed the artists.sort_name column; the tracks INSERT was missing two more. Use plausible stub values — the GC sweep only joins on track_id, none of these columns affect what the test exercises.