- sim_engine.py: generic orbital mechanics simulator with RK4 + analytical
propagation, used to verify C++ test expected values
- test_orbital_period.py: precalculation script with safety timeout for
measuring Earth/Mars orbital periods and direction test values
- Remove SOI transition logic (buggy in both Python and C++ versions)
- Use dataclasses.replace() for immutable state updates
- Support single-line TOML inline tables via tomllib
cinnaboot