MUST use for substantial evidence-driven research, analysis, decisions, planning, review, artifact, operational, or software work. Use native subagents for independent branches that save wait or isolate noise. Skip simple calculations or transformations, stable facts, free ideation, and tiny known paths.
Calculate campaign contribution from revenue, direct spend, and refunds, then compare options using current data.
Persist or resume unfinished Groundcraft work only for explicit cross-thread handoff or when native thread continuity is unavailable. Never scan it per task or use it for completed work.