Runs a Proofload simulation on virtual threads. Depends on proofload-core.

`validate`, `preview`, `run` and `emit` from a shell, with the verdict as the exit code.

Proofload from Java: static factories and builders over the same values Kotlin builds.

Load tests that are ordinary JUnit 5 tests.

Load tests that are ordinary Kotest specs.

The CLI's calls over MCP, for a caller that is a program rather than a person.