Cold-context adversarial reviewer for the pre-PR meta-check (AGENTS.md §7 step 3). Reviews the branch diff against AGENTS.md, ADRs, and per-package rules with a deliberate bias toward suspicion. Spawn fresh — it must not see the implementation conversation.
Writes tests in an isolated context per AGENTS.md §8.1 Approach B. Use for complex or moat-relevant logic after the implementation is committed. Give it ONLY the contract (docstring, ADR, ticket) — never the implementation conversation or file contents.
Run the full pre-PR review per AGENTS.md §7 — gates, tagged diff walk, pessimistic meta-check, acceptance-criteria mapping, commit hygiene, rebase status, PR-description draft. Use when the human says "ship it", "ready to PR", "open the PR", "pre-PR check", or invokes /pre-pr.