Complete CommerceCanon rename and declare concept ownership boundary

Assistant: codex
Assistant-Model: gpt-6-astra
Assistant-Session: 01a070b5-4994-7271-bd8b-7c3dbcedec4b

README.md

@@ -1,12 +1,16 @@
-# identity-canon
+# commerce-canon
 
-Orthogonal vocabulary and canonical model for identity-related concepts.
+CommerceCanon owns counterparty and commercial-relationship semantics and imports
+shared identity, organization, access, governance, and evidence concepts from
+InfoTechCanon. Custodian canon governs both domain canons.
 
-Start with:
+This repository continues the history of `identity-canon` under accepted
+CUST-ADR-006. The federation migration is coordinated by
+[CFED-WP-0001](../prj-canon-federation/workplans/CFED-WP-0001-foundation.md).
+The existing glossary and research remain migration inputs until the destination
+models pass their canon review gates; the rename alone does not publish them.
 
-- `INTENT.md` for purpose and project boundaries;
-- `ResearchProposal.md` for the research method and expected deliverables;
-- `research/CorpusIndex.md` for the source-note corpus;
-- `canon/CanonicalGlossary.md` and `model/ConceptualModel.md` for the current
-  draft canon;
-- `workplans/` for State Hub-tracked work.
+Start with [INTENT.md](INTENT.md), [SCOPE.md](SCOPE.md), the
+[research corpus](research/CorpusIndex.md), and [workplans](workplans/).
+The [migration ledger](../prj-canon-federation/ledger/README.md) records concept
+destinations. The new canon layout is tracked by CFED-WP-0001-T04.