## Summary
- Improve error message handling in local agent error responses by using
`getErrorMessage()` helper
- This ensures consistent error message formatting across the
application

## Test plan
- Verify local agent error responses display proper error messages
- Check that the error handling works for various error types

🤖 Generated with [Claude Code](https://claude.com/claude-code)
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>