Function read_operation_plan 

pub fn read_operation_plan(
    layout: &BackupLayoutGuard,
    expected: &ArtifactChecksumRecord,
) -> Result<OperationPlanRecord, OperationPlanPersistenceError>

Admit bounded validated local plan under its exact original expected intent digest.

Lost creation responses reconcile through this exact local read. This observes no remote authority, does not create/reset journals and grants no dispatch permit.

Errors

Rejects unsafe/missing/oversized/invalid declarations, digest mismatch and ownership failures.