Beacon playtest finding (spec gap 1): a player met the day-job band for 2,400 ticks, watched trust stay at 0, and concluded messaging was unimplemented. It works - trust rises only from excelling the band, never from meeting it, and the wall never said so. The blocked message reason is now Sim::email_channel_blocker: 'no comms channel - excel the day job for Voss's trust (N/15)', naming the mechanic and showing progress to DayJob::TRUST_FOR_EMAIL. Pinned by messaging_wall_names_the_excel_trust_path_and_its_progress via the shared available_actions projection. Defense: wiki/mechanics/day-job.md (amended) - trust unlocks the report email account; a wall that only says 'no channel' reads as a broken feature, so the surface names excel->trust->Voice and shows progress. No balance change.