YT failure receipt (NOT a playback PASS).

When: 20261007T174022Z
Browser: Google Chrome Stable, Incognito (fresh temp profile), launched with --no-sandbox flags due to environment restrictions.
Login state: logged out (Sign in button visible)
URL: https://www.youtube.com/watch?v=qq15at0yfYM&t=45s
Observed: Player shows “Video unavailable” with controls visible (0:00 / 3:08).