updated code execution engine

[Suhani1234-5]

updated and keeping UI, working same as demo given in pull request #96 working put your api as steps given ans supporting 75+ lang @gitsofaryan @adityai0

[greptile-apps]

Greptile Summary

This PR introduces a new standalone code execution engine (javascript-executor.html) that integrates with the Judge0 API to provide multi-language code execution capabilities. The implementation creates a comprehensive coding environment supporting 75+ programming languages including JavaScript, Python, C++, Java, and many others.

The new file implements a complete code execution workflow: users can select a programming language from a dropdown, write code in a syntax-highlighted editor, input test data, and execute code remotely via the Judge0 API. The system includes features like API key management, code examples for different languages, execution status tracking with polling, and detailed result display including stdout, stderr, and compilation errors.

The UI features a modern glassmorphism design with gradient backgrounds, blur effects, and smooth animations. However, this file operates as a completely standalone page and is not integrated with CodeClip's existing routing system (scripts/app.js) or navigation patterns. It doesn't follow the established architecture where pages are loaded dynamically into the main container, nor does it use the existing theme management system (scripts/theme.js) or consistent styling patterns found in other pages.

The Judge0 integration handles code execution safely on remote servers, avoiding client-side security risks. The implementation includes proper base64 encoding for code submission, polling mechanisms for result retrieval, and comprehensive error handling for various execution scenarios.

Confidence score: 2/5

• This PR has significant integration and security issues that make it risky to merge as-is
• The standalone nature breaks CodeClip's SPA architecture, API keys are stored insecurely in localStorage, and there are potential XSS vulnerabilities in DOM manipulation
• The entire javascript-executor.html file needs attention for integration, security hardening, and architectural consistency

_{1 file reviewed, 1 comment}

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[greptile-apps]

logic: DOM manipulation for error messages could cause issues if apiConfig element doesn't exist. Add null checks before accessing parentNode.

Suggested change

	// Insert after API config
	const apiConfig = document.querySelector('.api-config');
	apiConfig.parentNode.insertBefore(errorDiv, apiConfig.nextSibling);
	// Insert after API config
	const apiConfig = document.querySelector('.api-config');
	if (apiConfig && apiConfig.parentNode) {
	apiConfig.parentNode.insertBefore(errorDiv, apiConfig.nextSibling);
	}