- Refactor `showWebGLError` to use `document.createElement` instead of `innerHTML` - Replace inline `onclick` handler with `addEventListener` for CSP compliance - Add unit test to verify XSS prevention and button functionality
- Refactor `showWebGLError` to use `document.createElement` instead of `innerHTML` - Replace inline `onclick` handler with `addEventListener` for CSP compliance - Add unit test to verify XSS prevention and button functionality