Function classify 

pub fn classify(
    ran_to_completion: bool,
    exited_success: bool,
) -> AssertionLintOutcome

Classify a completed (or timed-out) command run.

• !ran_to_completion → AssertionLintOutcome::CouldNotVerdict
• ran_to_completion && exited_success → AssertionLintOutcome::PassedOnBase
• ran_to_completion && !exited_success → AssertionLintOutcome::FailedOnBase

AssertionLintOutcome::NotLinted is assigned by the runner when the overall budget is spent, not by this function.