Two-axis review of the diff between HEAD and a fixed point the user supplies:

Standards — does the code conform to this repo's documented coding standards?
Spec — does the code faithfully implement the originating issue / PRD / spec?

Both axes run as parallel sub-agents so they don't pollute each other's context, then this skill aggregates their findings.

Issue lookups follow the workflow in docs/agents/issue-tracker.md when the repo has one (/setup-matt-pocock-skills generates it). If it is missing, ask the user where issues live and proceed with what they provide.

Process

1. Pin the fixed point

Whatever the user said is the fixed point — a commit SHA, branch name, tag, main, HEAD~5, etc. If they didn't specify one, ask for it.

Capture the diff command once: git diff <fixed-point>...HEAD (three-dot, so the comparison is against the merge-base). Also note the list of commits via git log <fixed-point>..HEAD --oneline.

Before going further, confirm the fixed point resolves (git rev-parse <fixed-point>) and the diff is non-empty. A bad ref or empty diff should fail here — not inside two parallel sub-agents.