An R interface to Jump-Switch-Flow (JSF), a hybrid
simulation framework for compartmental reaction models that combines
stochastic jump dynamics at low population sizes with deterministic flow
dynamics at high population sizes. Simulations are performed using the
'jsf' backend for 'Python' through 'reticulate', with structured R outputs
for inspection, summary, and plotting. The underlying methodology is
described in Germano et al. (2026)