TuanCaoMantu/scrum-master-assistant ? reverse-engineered prompt

Build me a simple Scrum Master assistant app that helps a team keep track of their daily work, meetings, and sprint progress.

I want it to feel like a helpful tool for planning and running Scrum, with things like creating and updating tasks, tracking what is in progress, what is blocked, and what is done, and showing a clear view of the current sprint. It should also help with common Scrum events like daily standup, sprint planning, and review notes, so the team can quickly see what needs attention.

Make it clean and easy to use, and if it makes sense, expose it through a small web API with a straightforward way to test it. Keep the code organized and add basic tests. If you need to look up current C# or .NET guidance online, go ahead.