Update release-notes skill guidance and tool naming

[richlander]

Summary

• update the skill docs to use the current release-notes tool name where the older name still appeared
• tighten release-notes guidance around VMR/codeflow-aware revert handling, product boundaries for tooling and editor features, scoring, and community-contributor mentions
• include the additional tool-name updates already on the branch alongside the follow-up guidance from PR 10344

Context

This folds in the findings from the PR 10344 investigation and keeps the maintainer workflow documentation aligned with the current tooling names.