Wameez-2986/DeadlineOS — reverse-engineered prompt

Build me a simple web app called DeadlineOS, basically a clean dashboard for keeping track of deadlines, tasks, and upcoming due dates in one place. I want it to feel like a lightweight personal productivity tool, not a corporate project manager. A user should be able to add items, give them a title, due date, priority, and maybe a short note, then see what is due today, soon, or overdue.

Make the main screen easy to scan with a modern polished look, and include basic views like all deadlines, urgent items, and completed items. It would be great if people can mark things done, edit them, delete them, and filter or sort by date and priority. If it fits naturally, add a small summary area that shows counts for upcoming and overdue work.

Use the stack already in this repo and keep the code organized and reusable. Make reasonable product decisions where details are missing, and look up current docs online if you need to.