DL-185

Drop the manual add-a-workstream / create-agent surface from the Compass UI (supersedes DL-164’s add-half): minting a board card and creating agents from the UI contradict Manager-builds-the-tree (DL-095/DL-134) and issues-come-from-the-tracker (DL-069/DL-161). Removed: NewWorkstreamDialog, store.addWorkstream, the WorkstreamSpec type, and the planned “＋ New workstream” toolbar button. Kept: StartAgentDialog + the spawn/stop phase machine + stop control — the human’s only lifecycle affordance is start/stop on an existing (forge-ingested) card. The positive replacement is server-side: RIG-1820 seeds a root Manager on first launch that builds the rest of the tree.

Status: Superseded by DL-253 (Matt, 2026-08-25)

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