Assemble a valid Deterministic ValidationRequest JSON bundle from simulation context. Use when an agent needs to prepare a bundle before calling det-validate, when it has simulation output files but no pre-built bundle, or when it needs to infer domain and context fields from file extensions and solver metadata. Do NOT use when the bundle is already fully formed — go directly to det-validate. Do NOT use to actually submit the request; this skill is local-only and produces no network traffic.
