The builder hears the forge bridge's stream on a durable consumer: merged, a pull's closed and branch-deleted ask remove of each tagged version still held, and the bus gives the message again each minute until all are removed; past 15 minutes its finding tag-removal-not-done names the seats. The builder gains the state findings (ADR 0564 §2). Every forge message also wakes a floor whose bridge_tags was silent. Claude-Session: https://claude.ai/code/session_01JG73KJNrH5EgFXMKKYSrig