🔧 Maintenance round

[denialhaag]

Description

This PR makes several maintenance updates:

• Fix required-checks-pass job
• Use client-id instead of app-id
• Update to new MQSC branding
• Improve support for CLAUDE.md
• Configure Read the Docs to use Python 3.14 for colorful docs
• Make use of the fact that version 4.0.0 of cbuildwheel installs delvewheel by default

Checklist

• The pull request only contains commits that are focused and relevant to this change.
• I have added appropriate tests that cover the new/changed functionality.
• I have updated the documentation to reflect these changes.
• The changes follow the project's style guidelines and introduce no new warnings.
• The changes are fully tested and pass the CI checks.
• I have reviewed my own code changes.