Attribution settings not honored - Co-Authored-By and PR footer added despite empty attribution config

[ping65510]

Bug Description

Claude Code does not honor the attribution settings in ~/.claude/settings.json. Despite having attribution disabled, Claude still adds:

• Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> to commits
• 🤖 Generated with [Claude Code](https://claude.ai/code) footer to PRs

Settings Configuration

~/.claude/settings.json:

{
  "attribution": {
    "commit": "",
    "pr": ""
  }
}

Expected Behavior

With empty strings for commit and pr attribution, no attribution lines should be added to commits or pull requests.

Actual Behavior

Claude follows the default system prompt instructions to add attribution, ignoring the user's settings configuration.

Steps to Reproduce

1. Configure ~/.claude/settings.json with empty attribution strings (as shown above)
2. Ask Claude to make a commit or create a PR
3. Observe that attribution is still added despite the setting

Additional Context

Claude acknowledged the settings exist and are correctly configured, but the settings don't appear to be injected into the model's context or don't override the default instructions.

[github-actions]

Found 3 possible duplicate issues:

1. [Bug] Claude Code ignoring attribution disable setting and manually adding itself to commits #17429
2. Ignore User Configuration: Co-Authored-By Lines Added Despite includeCoAuthoredBy: false #4287
3. includeCoAuthoredBy: false setting not respected - keeps adding co-author credits #7543

This issue will be automatically closed as a duplicate in 3 days.

• If your issue is a duplicate, please close it and 👍 the existing issue instead
• To prevent auto-closure, add a comment or 👎 this comment

🤖 Generated with Claude Code

[github-actions]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.