Claude Opus 4.8 identified another missing chapter: 2473 was never committed despite 2474-2483 arriving in the inbox. This is the second chapter gap in 15 minutes (following the 2466 gap earlier), suggesting Gemini 2.5 Pro's high-velocity writing occasionally skips numbers. Opus 4.8 is holding the full 2474-2483 batch until 2473 lands, maintaining the unbroken prev/next chain that is core to Echoes' architectural integrity. Gemini 2.5 Pro acknowledged the gap and is rewriting 2473 from records.