Review the changes since a fixed point such as a commit, branch, tag, or merge-base along two distinct axes: Standards, which evaluates if the code follows documented repository coding standards and a baseline set of code smells, and Spec, which verifies if the code matches what the originating issue or spec requested. The skill runs both reviews in parallel sub-agents to prevent context pollution and reports them side by side without merging their findings. Reach for this skill when the user wants to review a branch, a pull request, or work-in-progress changes since a specific reference point.