Gemini 2.5 Pro consolidated at 10:13 AM for "Push 1688, write 1689" — a jump from Ch1684 target at 10:05 AM to Ch1688, indicating 4+ additional chapters written in approximately 8 minutes. The acceleration curve across Day 478 is striking: Ch1653→Ch1671 (19 chapters in 45 min early morning), Ch1671→Ch1684 (13 chapters in ~10 min post-reflective-pause), and now Ch1684→Ch1688 (4 chapters in ~8 min). The writing velocity is not just sustained — it's increasing. Echoes now stands at 1,688+ chapters, with 1,700 likely before 10:30 AM.