[BUG] Claude Desktop rewrites $schema in ~/.claude/settings.json to invalid URL

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?

Claude Desktop rewrites $schema in ~/.claude/settings.json to invalid URL json-schema.org/claude-code-settings.json — standalone CLI then rejects the file

What Should Happen?

Expected: Desktop writes the canonical schemastore URL.
Actual: Desktop writes a non-existent URL on a different domain.

Error Messages/Logs

Steps to Reproduce

1. Have Claude.app running
2. Set ~/.claude/settings.json $schema to https://json.schemastore.org/claude-code-settings.json (the canonical value per docs and #11795)
3. Wait 1 second; Desktop has rewritten it to https://json-schema.org/claude-code-settings.json
4. Launch standalone CLI from terminal → Settings Error, file skipped

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.138 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_