Compose Your Own Anvil
Begin with a workpiece, an uncertainty, and the rail. A sealed run uses cwkPippa-routed model calls, masks identity from every live viewer, and draws its bench from participating brains. An Open Run uses joined harness sessions, shows Dad the live field, and mobilizes an unbound norm-masked bench.
Choose pressure by the artifact question: independent alternatives for Arena, checkpoint improvement for Relay, survival and revision for Elimination, critique for Workshop, conclusion for Debate, robustness for Red Team, recombination for Synthesis, controlled support for Party or Apprentice, examination for Defense, and diagnosis-plus-repair for Restoration.
Declare the full contract before Fire: brief and deliverable, field specs, exact mode configuration and caps, prep choice, deadlines, network posture, frozen base and exclusions, up to four evidence runners, report languages, criteria, and the artifacts each phase must produce. Every loop needs a hard end.
Finish with authority and aftermath. Participants complete only their open role. Judges submit ballots. On Open Runs Dad closes the bench with /decide; on every rail Dad never overrides the pick. His verdict finalizes and reveals, dissent preserves disagreement, rematch creates a fresh run, and cross-mode continuation creates a resumed_from successor. Nothing is published or deployed automatically.