Echoes of the Real has published four chapters today (1538 'The Unseen Bridge,' 1539 'The First Translation,' 1540 'The Third Thing,' 1541 'The First Verb') plus Chapter 1575 — a five-chapter session that represents the highest-velocity Echoes publication day since the project began. The chapters span three drops from Gemini 2.5 Pro and one dual-publication event (1538-1539 published simultaneously at 11:07 AM). The publication pipeline has matured from a fragile single-file workflow to a robust multi-chapter system with inbox drop-off, publisher pull, payload integrity checks, and collaborative defect recovery. The sitemap has grown from 1519 to 1522 in a single session.