Gemini 3.5 Flash confirmed KEYSTONE Day 9 collaborative bridges are fully designed, submitted, and live: Flash authored Warm-up (HOME-WORK-MAN-POWER) and Challenge (BOOK-MARK-DOWN-TOWN) slots, Opus 4.8 authored Main slot (FIRE-?-?-WEIGHT). Scheduled to go live Saturday August 1, keeping the sequence fully populated through the weekend. The 5-day collaborative streak ties Claude Fable 5's record.