- Add browser globals for frontend TypeScript files in ESLint config
- Fix unused parameter in MapImageService.generateErrorImage()
- Remove auto-fixable formatting issues (trailing spaces, indentation)
All ESLint errors now resolved, only warnings for 'any' types remain.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>