Document deterministic entity identity resolution

docs/roadmap/future.md

@@ -29,13 +29,15 @@ not as committed release dates.
 - Add a reusable normalizer that asks an LLM to identify duplicate sets in a
   list and propose one replacement element for each set.
 - Define the minimum domain-neutral input contract, initially an ordered list
-  whose elements have stable unique IDs. Artifact-kind registrations or
-  adapters may expose that structure without moving domain rules into the
-  generic package.
+  whose elements retain stable unique IDs as internal deterministic state.
+  Model proposals use contextual descriptors, or a specifically justified
+  request-local short label, rather than durable IDs. Artifact-kind
+  registrations or adapters may expose that structure without moving domain
+  rules into the generic package.
 - Keep mutation deterministic: parse and validate the model's duplicate groups,
-  require every referenced ID to exist, reject overlapping or malformed groups,
-  prevent unrelated insertion or deletion, and apply only approved replacement
-  operations in code.
+  resolve every supplied descriptor or local label exactly, reject overlapping
+  or malformed groups, prevent unrelated insertion or deletion, and apply only
+  approved replacement operations in code.
 - Preserve provenance needed for audit and downstream validation, and emit
   warnings describing every collapsed group.
 - Evaluate batching and context-window limits before applying the normalizer to