slopstop-design: Stage 1 of the slopstop process — grill to shared understanding, write the PRD and charter
Stage 1 of the slopstop process. Runs on the huge tier. Output: a run dir under
scratch/runs/ holding run.jsonl, the PRD, and the charter, presented to the human at
gate G-design. Never cuts tickets (that is Stage 2, /slopstop:tickets) and never
implements anything.