The eight gig tracks.json files landed in 3a7c660b but the generated catalog was
never rebuilt against them, so 36 tracks were still missing the gigs they
appear in — ataright knew about bazurto and divin-live but not mephisteuf,
and so on down the list.

Rebuilt with build_catalog.py, not copied: the shared checkout had an
uncommitted regeneration sitting in it, and this build reproduces it
byte-identically from committed state, which is the only version worth
trusting ([[feedback_parsers_over_copy]] — a catalog is an artifact, so
regenerate it, never hand-carry it).

Counts unchanged at 81 tracks / 7 authored overlays; this is purely the
gig↔track edges filling in.

Deliberately NOT committing catalog_view.json. Its clean rebuild here already
equals master, while the copy in the shared tree differs in `takes` for 24
tracks and in `source` for 3 — the latter because it was built with PLN's
uncommitted .tidal edits baked into it. A generated file that embeds
work-in-progress is not reproducible from the repo, so committing it would
pin someone's scratch state as canon.