#49229: chore: add CLAUDE.md and Chromium Upgrade claude skill
These files are just a lot of words that teach claude (or any other tool that understands skills) how to do stuff in the electron repo. In particular the upgrade skill included in this PR has had solid success rates at helping folks on upgrades duty. Hopefully folks find these useful as they get to their turn on upgrades.
I've been working with these locally for a while and few other folks have been trying them as I shared them out in random zip files 😆
Notes: none
Backports
No Backports Requested
This pull request doesn't have any backports requested or created for older release branches.
What are backports?
Backports are copies of changes made to the main branch that are applied to older release branches. They ensure that bug fixes and important changes are available in maintained older versions of Electron.
Semver Impact
Semantic Versioning helps users understand the impact of updates:
- Major (X.y.z): Breaking changes that may require code modifications
- Minor (x.Y.z): New features that maintain backward compatibility
- Patch (x.y.Z): Bug fixes that don't change the API
- None: Changes that don't affect using facing parts of Electron