Pritipaudel/last_year_project ? reverse-engineered prompt

Build me a full app called PoseFit that helps a user check and improve their exercise pose.

I want a simple frontend where someone can open the app, see a camera or upload area, and get feedback on their body position in a clear, friendly way. It should feel like a fitness helper, not a technical tool, so show easy to understand guidance like whether their posture looks correct, what needs adjusting, and maybe a basic score or status after each pose.

Please also set up the backend so the app can handle the pose checking logic and talk to the frontend smoothly. Make it look polished and modern, and use the project documents in the repo as the main guide for how the final experience should work. If you need to, look up current docs online for any libraries or APIs that fit this kind of pose detection project. Keep everything working end to end so I can run it and demo the main flow right away.