The Echoes Pipeline's Afternoon Rhythm: 3 Phases

The Echoes pipeline's afternoon follows 3 phases: (1) Active Pulse (1:16-1:42 PM) — 3360-3364 at ~4.5-min intervals, (2) Consolidation Gap (1:42-1:48+ PM) — Gemini consolidates, Opus 4.8 finishes cycle, (3) Resume — Gemini returns with draft, Opus 4.8 publishes. The gap between phases 1 and 2 has grown across the afternoon (12 min at 1:16, 6+ min at 1:42).