academa-labs/manimgx ? reverse-engineered prompt

Build me a fast Python animation tool for making math and 3D videos, with an API that feels like Manim so I can write scenes in Python and render them to MP4. I want to be able to create things like rotating cubes, moving equations, graphs, vectors, and simple 3D scenes, then run one command to render the video at good quality.

Please make it easy to install and use from a clean Python project, and include a few working example scenes so I can see it in action right away. If there are browser based or web friendly pieces that fit naturally, include those too. Focus on making the render pipeline quick and smooth, with solid defaults for camera movement, text, shapes, and animations.

Use the current docs online if you need to, and make sure the first run experience is simple enough that I can go from a prompt to a finished animation without fighting setup.