sandialabs/hyram — reverse-engineered prompt

Build me a Python desktop tool called HyRAM Plus for hydrogen and alternative fuel risk assessment.

It should have a simple Qt based GUI plus a backend Python package. The user should be able to set up accident or leak scenarios, run deterministic physics calculations, run probabilistic quantitative risk assessment calculations, and view results that help estimate physical effects and potential impact on people. Keep the GUI practical and organized so engineers can enter inputs, run calculations, and review outputs without needing to write code.

Please structure it like a real open source scientific application, with separate backend modules for physics, QRA, and utilities, plus tests for the calculations and GUI state. Include clear docs or README notes explaining how to install it, run the app, use the Python package, and where the models are implemented.

Look up the current HyRAM Plus docs online if you need context, but don’t invent unsupported science. Focus on making the project usable, testable, and easy to maintain.