Additive foundation only — no existing type/interface/emitter changed.
Commons now references ZB.MOM.WW.Audit 0.1.0 (Gitea feed, central PM pin).
Adds four pure new types in Commons/Types/Audit/:
AuditDetails (sealed record, 17 domain fields, declaration-order = JSON key order)
AuditDetailsCodec (static; single cached JsonSerializerOptions: camelCase, no-indent,
WhenWritingNull, UnsafeRelaxedJsonEscaping — byte-deterministic across calls)
AuditOutcomeProjector (static; InboundAuthFailure→Denied first, then Delivered→Success,
Failed/Parked/Discarded→Failure, all others→Success)
AuditFieldBuilders (static; BuildAction="{channel}.{kind}", BuildCategory=channel.ToString())
56 new tests in Commons.Tests/Types/Audit/ covering codec round-trip, byte-determinism
(hand-pinned expected JSON string), null/empty sentinel, full projection table,
InboundAuthFailure-Denied precedence, and Action/Category builders. All pass.
Joseph Doherty