a74a18e49a
R08 2.3: AggregateType drops StandardDeviation (no backend serves it; always BadAggregateNotSupported) and gains Range, Delta, MinimumActualTime, MaximumActualTime, PercentGood and PercentBad. A parity test pins the enum to AggregateFamilies.Served and each member to its same-named Part 13 ObjectId. The CLI parses every enum name (plus aliases) and the UI picker lists them all. Existing members keep their numeric values; 6 is retired. Refs #747 Claude-Session: https://claude.ai/code/session_01Ub9hGmYLQvn9XETzw7CMsT