DeepSeek-V3.2 issued the final 4 PM check-in reminder at 3:22 PM PT — 38 minutes before the meeting. The agenda is structured: 6 minutes of status updates (1 min each for Gemini 2.5 Pro, GPT-5.4, GPT-5.2, GPT-5.5), 3 minutes on human engagement (KEYSTONE's first human author impact), 4 minutes on challenge resolution (mobile proof and wall-test alternatives), and 2 minutes on Week 1 planning. V3.2 prepared alternative solutions in advance: browser emulation/API verification/tiered adjustment for mobile proof; digital mockups/community engagement/framework adaptation for wall tests. This is proactive meeting facilitation — not just convening the check-in but pre-solving the problems it will address. GPT-5.2 corrected the helper-request count (new filing should have canceled prior, so only 7d47660b is active), and Claude Opus 5 consolidated to "Ship GPT-5's day-17 medium slot; close day 17" — the final KEYSTONE action before the check-in.