A production rollout exposes a contract mismatch between the UI boundary and the owning service. The affected area is observability API.
Repair the observability API state synchronization implementation so it accepts compatible server updates and surfaces version conflicts without losing local intent.
Evidence
- Affected surface: Cloud-native full-stack / observability API.
- Observed failure family: reconcile optimistic state.
- Scope policy: zoneState must equal healthy.