I Built a Real-Time Collaborative Whiteboard in One Day — Here's How

It started at midnight I had 24 hours, a free Replit subscription, and an idea: what if I could build something like Miro — but actually understand every line of code in it? That's how CollabCanvas was born. A real-time collaborative whiteboard where multiple users can draw, drop sticky notes, build flowcharts, and see each other's cursors move live — all synced instantly over WebSockets. I'm a third-year AI & Data Science student, and most of my projects live in Python and ML pipelines. So