Review a Helium Release Proposal PR or release file for quality, completeness, and consistency. Use this skill whenever the user mentions reviewing an HRP, checking if a release is ready, validating a release file, or asks "is this ready to merge". Also triggers for "check the HRP", "lint the release", "review the proposal", or "look at this PR". Includes a Reddit posting nudge when features are present but no announcement has been made.