Ran the new generation lens proactively against Cosmic26_master, before that
release goes anywhere: 12 OK, zero stale, zero strays. The exact opposite of
OPAL, for two reasons that are lessons rather than luck — only one render
generation exists on disk, and every permalink is gig-scoped via
--permalink-suffix, so no CosmicFest upload could collide with the OPAL cut of
the same score. Four of these titles exist at both gigs.

That answers an open board decision with evidence instead of taste. It asked
whether to keep OPAL unsuffixed for consistency; the suffixed release has 0
permalink pathologies and the unsuffixed one has 14. Consistency with a broken
scheme is not a virtue, so new OPAL uploads get suffixed. The 6 correct
unsuffixed tracks stay — they are right, and renaming spends a permalink for
nothing.

Found in passing: CosmicFest is missing exactly 2 tracks, and they are almost
certainly the two already-known vanishers that logged '✓ live at', passed an API
check, then 404'd. A plain idempotent re-run converges. Which is the standing
lesson landing on its feet: verify the shelf AFTER a run, not only during it —
'N uploaded, 0 failed' was never evidence that N tracks exist, and it took a
lens three weeks later to notice two were gone.