sim-run-loaders

Low-level loader plugins for the sim bootloader.

This crate keeps native dynamic-library and wasm loading below the SDK umbrella so command-line feature composition can add loader mechanisms without importing the full runtime facade.

Native and wasm guests may export site records. The loader registers each site as an opaque runtime value under its placement symbol; the kernel stores the value but does not implement EvalSite. Agent libraries adapt the value through the model placement catalog.