Salabim Parity

Parity support includes a Salabim adapter plus project-level model variants for side-by-side comparison.

See:

• adapters under dssim/pubsub/parity/
• Salabim model variants under projects/ (for example crossroad_salabim.py, cpu_cache_salabim.py)

This helps confirm conceptual equivalence across frameworks, even when the example form differs from SimPy parity scripts.