Run the full holdout gate chain on a research artifact and return the verdict (release / review_needed / block) as JSON. Executes every required gate of the artifact kind with the real tools (fail-closed: missing tool, crash or timeout records not_run and blocks) and writes the result back. Use as the final step before publishing any AI-assisted research claim — after gov_init created the project and gov_attach recorded the evidence. Do NOT call it before evidence is attached: missing required gates produce review_needed or block by design. Returns decision, exit_code, missing, gates and policy_ref_ok; treat exit_code 2 (block) as do-not-publish.

Read-only governance assessment of a research artifact, returned as JSON: current decision state, missing required gates, pass/fail per recorded gate, and policy reference check — WITHOUT running any gate or changing any file. Use to inspect an artifact before attaching evidence or to understand why a previous check did not release. Prefer gov_check for fresh gate execution; gov_report never mutates and never spawns tools.

Scaffold a holdout governance project in a directory (created if missing): writes policy.yml and gate-inputs.json only if absent, and creates a new artifact.json with decision=pending. Never overwrites an existing artifact.json — if present it returns an error and writes nothing. Use once at the start of a research run, then attach evidence with gov_attach and decide with gov_check. Returns the created files and the policy_ref SHA.

Attach gate evidence, attachments, declarations or a human review to an artifact (decision resets to pending — run gov_check afterwards). Record gate + status + tool + report_ref after a gate tool produced evidence, or review + reviewer after a human reviewed. Attachments/declarations are name=value strings; repeated calls merge, never drop existing entries. Do NOT claim a gate passed when no tool ran — gov_check trusts the journaled status. Returns the updated gates, attachments, declarations and review.