What problem does it solve? Plan-driven development loses value when nobody verifies that a merged PR actually matches its plan. This Skill runs an automated, non-interactive implementation review inside GitHub Actions, comparing the PR diff against the plan it claims to implement and publishing an auditable verdict. ## Core Features & Use Cases - Plan drift detection: Discovers the plan at context/changes/<change-id>/plan.md (repo root or monorepo subtree), cross-references changed files against planned files, and flags MATCH / DRIFT / MISSING / EXTRA per planned change. - Parallel evidence gathering: Spawns three subagents covering plan drift, safety/quality/pattern compliance, and test coverage, then runs the plan's non-test automated checks (lint, build, typecheck). - Auditable output contract: Writes a committed report at <change-dir>/reviews/impl-review.md with a seven-dimension verdict table, posts inline review comments on flagged diff lines via MCP, and posts a summary PR comment with a REJECTED gate signal. - Use Case: A team using a plan-then-implement workflow labels a PR with impl-review; the workflow reviews the diff against the plan, commits the report with [skip ci], and fails the check on a REJECTED verdict unless an impl-review-override label is present. ## Quick Start Ask your AI coding assistant to run the 10x-impl-review-ci skill on this pull request to review the implementation against its plan and post the verdict.
