update CHANGELOG for v0.2.0

Author: matt-beanland

CHANGELOG.md

@@ -31,10 +31,16 @@ See [Conventional Commits](Https://conventionalcommits.org) for commit guideline
 ### Fixes:
 * fixed relationship enrichment inconsistent across neo4j versions
 
-## [v0.2.0](https://github.com/diffo-dev/diffo/compare/v0.0.4..v0.2.0) (2026-04-24)
+## [v0.2.0](https://github.com/diffo-dev/diffo/compare/v0.0.4..v0.2.0) (2026-04-26)
 
 ### Maintenance:
 * updated to diffo 0.2.0
 
 ### Features:
-* new NBN domain modelling NBN Ethernet access and constituent resources (UNI, AVC, NTD, CVC, NNI Group, NNI), JSON API and livebook
+* new NBN domain modelling NBN Ethernet access and constituent resources (UNI, AVC, NTD, CVC, NNI Group, NNI)
+* JSON API via AshJsonApi and Plug.Cowboy
+* RSP resource with AshStateMachine lifecycle (inactive/active/suspended) and Ash Policy authorisation
+* RSP multi-tenancy: SetRspId change, OwnedByActor and NoActor policy checks, RspOwnership macro shared across RSP-owned resources
+* NTD and UNI modelled as NBN-owned infrastructure — readable by any RSP, mutable only by internal calls
+* Interactive NBN livebook with Kino RSP selector and actor-scoped provisioning flow
+* NBN domain documentation including Perentie ecosystem narrative