chore: add git config protection to CLAUDE.md

Author: somaz94

CLAUDE.md

@@ -6,6 +6,7 @@ GitHub Action to automatically commit, push, tag, and create pull requests using
 
 - Do not include `Co-Authored-By` lines in commit messages.
 - Do not push to remote. Only commit. The user will push manually.
+- Do not modify git config.
 
 ## Project Structure