OpenSourceRisk/Engine ? reverse-engineered prompt

Build me a C++ open source risk analytics platform for pricing and risk analysis, something like a small engine that can be used for valuation, market risk, and XVA style calculations.

I want it to have a clear way to load trade data, market data, and system settings, then run pricing and risk reports from those inputs. It should include a few realistic example workflows so I can see how to use it, plus a solid test suite so I can trust the outputs. If it makes sense, add simple launchers or integrations for Python, Jupyter, Excel, and LibreOffice so non C++ users can try it too.

Please make it feel like a serious quantitative finance codebase, with documentation, example runs, and a structure that can be extended later. Use current docs online if you need to check best practices for the libraries involved.