Function apply 

pub fn apply(
    provider: CliRunnerType,
    harness: &Harness,
    task_id: &str,
) -> Result<Applied, UhpFailure>

Apply harness’s settings to a run of provider, the task task_id.

Errors

Answers 400 unsupported_harness_setting naming every switched-on setting provider has no way to apply, 400 invalid_input for an MCP server or skill bundle that cannot be handed over as it stands, and 500 skill_staging_failed when the bundles cannot be written.