What
A new hook event that fires when configuration files change during a session, allowing validation and blocking of config changes.
Details
- Fires when skills, settings, or CLAUDE.md files are modified
- Can block changes by returning exit code 2
- Input includes source (user_settings, project_settings, etc.) and file_path
- Useful for enforcing configuration policies
Evidence
New ConfigChange hook event (search for "ConfigChange")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.