Summary

Command scenarios now exercise command validators discovered by Arc, including validators with scenario-provided dependencies and manual overrides.

Added

Specs covering automatic dependency-backed command validator execution in CommandScenario<TCommand>.
Specs covering missing validator dependencies and manual concrete validator overrides.
A spec proving validators can receive interface-backed scoped dependencies from scenario.Services without manually registering the validator.
JavaScript command result specs covering primitive command responses.

CommandScenario<TCommand> registers discovered validators in its isolated service provider so scenario validation matches runtime command execution without leaking validators or dependencies across scenarios.
Existing concrete validator registrations are preserved; scenarios only add missing validator registrations, so custom factories/lifetimes and manual overrides still win.
JavaScript CommandResult now preserves primitive command responses directly instead of passing strings, numbers, and booleans through object deserialization.
Added a narrow CA2000 ownership suppression for the query-health observable wrapper so Release builds recognize the existing disposal ownership pattern.