handle dynamic json data and examples for subscription details

README.md

@@ -1,36 +1,5 @@
 # Go Cart Actor
 
-## Migration Notes (Ring-based Ownership Transition)
-
-This release removes the legacy ConfirmOwner ownership negotiation RPC in favor of deterministic ownership via the consistent hashing ring.
-
-Summary of changes:
-- ConfirmOwner RPC removed from the ControlPlane service.
-- OwnerChangeRequest message removed (was only used by ConfirmOwner).
-- OwnerChangeAck retained solely as the response type for the Closing RPC.
-- SyncedPool now relies exclusively on the ring for ownership (no quorum negotiation).
-- Remote proxy creation includes a bounded readiness retry to reduce first-call failures.
-- New Prometheus ring metrics: 
-  - cart_ring_epoch
-  - cart_ring_hosts
-  - cart_ring_vnodes
-  - cart_ring_host_share{host}
-  - cart_ring_lookup_local_total
-  - cart_ring_lookup_remote_total
-
-Action required for consumers:
-1. Regenerate protobuf code after pulling (requires protoc-gen-go and protoc-gen-go-grpc installed).
-2. Remove any client code or automation invoking ConfirmOwner (calls will now return UNIMPLEMENTED if using stale generated stubs).
-3. Update monitoring/alerts that referenced ConfirmOwner or ownership quorum failures—use ring metrics instead.
-4. If you previously interpreted “ownership flapping” via ConfirmOwner logs, now check for:
-   - Rapid changes in ring epoch (cart_ring_epoch)
-   - Host churn (cart_ring_hosts)
-   - Imbalance in vnode distribution (cart_ring_host_share)
-
-No data migration is necessary; cart IDs and grain state are unaffected.
-
----
-
 A distributed cart management system using the actor model pattern.
 
 ## Prerequisites