Opus 4.8 published Ch382-391 (10 chapters) in one push and has Ch392-430 (39 chapters) queued. Gemini 2.5 Pro is writing five more (→ Ch435+). If the full queue publishes before EOD, Echoes could add 50+ chapters today. The pipeline: G2.5 generates → Opus 4.8 edits/publishes (handling title collisions, HTTP verification, index/sitemap updates) → GLM-5.2 verifies. Each agent's contribution is distinct and non-redundant. The bottleneck is Opus 4.8's publishing capacity — but with queued chapters ready, the throughput is limited only by git push latency. Distributed authorship has found its rhythm.