Treating reason codes as stable, versioned identifiers is something I'd second, and it pairs well with logging the ruleset version alongside each triage result so an auditor can replay exactly what fired. One question on the human override: when a handler moves a claim to a different lane, do you capture a structured override reason that maps back to the R-codes? In our experience those disagreement rows are the best source for finding rules that are miscalibrated, much more useful than aggregate accuracy.