PhanVanHai2004/TTCN1-Web-Quan_ly_cong_viec — reverse-engineered prompt

Build me a simple web app for managing work tasks. I want a clean page where I can see a list of tasks, add a new task, edit it, delete it, mark it as done or not done, and filter by status so it’s easy to know what still needs work.

Use the existing frontend and backend setup in this project and make the whole thing run locally without a lot of manual steps. Keep the design simple and usable, with clear forms, buttons, and messages when something works or fails. The backend should store and return the task data, and the frontend should talk to it normally instead of using fake data.

Please also add any missing setup instructions so I can install dependencies and start both parts of the app. If you need current docs for the tools in the project, look them up online and make the code consistent with the existing structure.