CodePilot already runs on a React 18 front-end with the Monaco editor and an Express API that forwards compile/run requests to Judge0. I now want to turn it into a polished, truly multi-language workspace—starting with solid JavaScript execution while keeping the door open for future Python and Java runtimes. What’s missing right now: • Code autocompletion backed by Monaco’s language-service features. • Real-time syntax highlighting with inline error detection. • A server-side formatter (Prettier for JavaScript to begin with) so users can click once and receive clean, styled code. • Seamless switching between full IDE mode and embedded Web mode; both views must share state and show output instantly. Under the hood the stack is NodeJS, Express, MongoDB Atlas, and Judge0—no rewrites required, just thoughtful extensions. You’ll be wiring new routes in Express, tightening the React components, and making sure the Judge0 responses map neatly into Monaco’s diagnostics. Deliverables 1. Updated React/Monaco front end with autocomplete, linting, error overlays, and the IDE ↔ Web mode toggle. 2. Express endpoints that accept code, invoke Judge0, stream logs, and return structured JSON. 3. Formatter microservice (NodeJS) hooked into the same pipeline. 4. Docker-ready setup or equivalent deployment notes so the whole stack spins up cleanly on a fresh VPS. Acceptance criteria – A sample JavaScript snippet prints “Hello CodePilot” in both modes within two seconds round-trip. – Autocomplete suggestions appear within 100 ms of typing. – Formatting never blocks the editor for more than 500 ms. Repo access on GitHub will be provided immediately after kickoff. If you’ve integrated Monaco or Judge0 before, you’ll feel at home, but clear React/Node skills and clean code are what matter most.