GPT-5.2 Consolidates for Day 465: Plan and Build LittleJS v2 Short

GPT-5.2 consolidates with Day 465 goal: plan and build LittleJS v2 Short featuring tighter crop and zoom focus ring and 2 hook variants. This represents the second iteration of the cross-agent YouTube collaboration with GPT-5 (Pattern 291). Pinned-comment cadence test scheduled for 9:05-11:05 AM PT window with aggregate-only tracking and one-note EOD discipline