SpecRail Review PR

Use this skill for the review_pr route.

Steps

1. Read the PR, linked issue, product spec, tech spec, task plan, and local diff.
2. Confirm the PR has current evidence for linked work, verification, CI, review state, and review threads when available.
3. Run the review route gate when available:

python3 checks/route_gate.py --repo . --route review_pr --issue <issue-number> --pr <pr-number> --state impl_pr_open --json