# sim-lib-physics-study
Immutable, reviewable physics study plans and placement-transparent sweep
evidence. The crate composes the canonical stats samplers, kernel `EvalFabric`,
and physics influence proof. It owns no scheduler, executor, transport, compute
site, or tensor implementation.
Every plan declares semantic axes, partitions, exact boundaries, coverage gaps,
limits, audit and influence policy, outputs, seed, and placement. Every result
retains plan, point, request, provider, and outcome identity. Energy observations
are post-selection annotations and cannot enter the selection API.