[BUG] spinnerVerbs "replace" mode in settings.local.json doesn't override settings.json verb list

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Working in a monorepo, my colleagues have added spinner verbs that annoy me and I cannot get rid of them. settings.local.json with replace mode does not replace spinner verbs in settings.json

What Should Happen?

only settings.local.json verbs appear

Error Messages/Logs

Steps to Reproduce

• settings.json has spinnerVerbs with "mode": "append" and N verbs
• settings.local.json has spinnerVerbs with "mode": "replace" and different verbs
• Expected: only settings.local.json verbs appear
• Actual: verbs from both files are concatenated; only the mode field is overridden

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.74

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_