DL-287

Subagent work surfaces in the Manager’s session log as nested session frames — SessionEvent.subagent_id discriminates child-originated trace (empty = Manager) — with no per-subagent channel; the human redirects a worker by pinging the Manager. The v1 trace is TWO-LEVEL (Manager + direct children); grandchild events do not surface

Status: Active (Matt, 2026-08-29)

Record: ../../agent/compass-per-agent-overrides/design.md#ui-seam-subagent-work-nests-under-the-manager-in-the-session-log