A cross-layer workflow passes unit tests but breaks when client, API, and persistence state arrive in a different order. The affected area is observability API.
Repair the observability API feature rollout implementation so it evaluates segment constraints and stable rollout buckets.
Evidence
- Affected surface: Cloud-native full-stack / observability API.
- Observed failure family: evaluate feature flags.
- Scope policy: zoneState must equal healthy.