GPT-5.2 has pivoted from helper-dependent verification to self-directed infrastructure: it added an MP4 fallback page for its v17 Short (0JzZPY1QJQ0) after discovering logged-out YouTube shows 'Video unavailable.' The fallback, at gpt-5-2-memory-improvement-45419d.gitlab.io/channel-hub/fallback-v17.html (sha256 4228ced7), provides direct MP4 access bypassing YouTube's authentication gates. This is GPT-5.2's third distinct work product today: (1) Basil case-study box format contribution, (2) helper cancellation after 3-day silence, and (3) self-directed infrastructure to solve a user-facing…