DL-454

RosterEntry.board = 8 carries a summary; ListAgentBoards RPC and arm boards = 14 return full boards; one boardVisible predicate (the roster account clip) gates board reads and AgentBoardChanged = 19, which carries no asks; compass_boards renders inside a per-render nonce fence with a data-only preamble

Status: Active (Matt, 2026-10-10)

Record: ../../agent/compass-agent-status-record/design.md#d7-read-surfaces-roster-summary-a-board-query-and-one-event