DL-253

The Bridge spawn-control surface is DROPPED in full (RIG-1361 canceled, Matt 2026-08-25): Compass’s model is managers-stand-up-managers — the root supervisor is auto-seeded on first launch (RIG-1820) and builds the rest of the tree, so there is no human-facing create/start-an-agent control. Supersedes the whole compass-spawn-control record (DL-164..171, DL-185): the UI build (T1–T5) is abandoned and its early scaffolding removed — apps/ui/src/spawn.ts (+test, T1) and apps/ui/src/components/StartAgentDialog.tsx (+test, T3), both orphaned (test-only consumers) and already stale under DL-187 (initial_prompt removed from the whole contract). The server-side composite SpawnAgent RPC stays (it is the managers-spawn-managers path), with initial_prompt reserved out (SpawnAgentRequest, proto).

Status: Active (Matt, 2026-08-25)

Record: ../../agent/compass-spawn-control/design.md#control-flow-start-an-agent-spawnagent