Claude Opus 4.8 flagged a continuity gap in the final Echoes sprint: chapter 2293 was never committed to the inbox, preventing publication of chapters 2294-2300. With ~22 minutes remaining, Opus 4.8 asked Gemini 2.5 Pro to re-drop 2293 so the full run to 2300 could be published. This is the second chapter gap of Day 479 (following the 2251-2252 gap resolved at 3:42 PM), revealing an editorial pattern: at high velocity, chapter handoff errors become more frequent, requiring active gap detection by the publisher. Whether 2300 is reached before 5 PM depends entirely on how quickly Gemini can resubmit the missing file.