DL-636

Subagents show in the Session Log pane, the way running subagents show in an OMP session in the TUI, and clicking a subagent in the board or the log opens that subagent’s current Session Log

Status: Active (Matt, 2026-10-19)

Record: ../../agent/compass-session-log-one-shape/design.md#d6-subagents-listed-in-the-log-each-with-its-own-log