DotSetSerializer

Custom KSerializer for DotSet that emits DotSet.dots sorted by Dot (lexicographically by replica, then by seq), producing identical bytes for any two replicas at the same logical state regardless of delivery order.

Wire format: List<Dot> — a list rather than a set, because ListSerializer preserves insertion order and most formats (JSON, CBOR) encode lists as arrays. The canonical sort makes the array byte-stable.

The auto-generated serializer is delivery-order-dependent because DotSet.join builds a LinkedHashSet whose iteration order depends on which side is self vs other in the merge. Sorting before encoding makes the wire form a function of the logical value, not history.

Sort order: sortedByCanonicalKey, the one canonical order shared with CanonicalSetSerializer and the rest of the dot family (#1964). It is byte-identical to the dots.sorted() it replaced — Dot's leaf sequence is (replica, seq), compared in exactly the order Dot.compareTo compares them — which dotOrderMatchesCanonicalKeyOrder pins.