A production rollout exposes a contract mismatch between the UI boundary and the owning service. The affected area is service gateway.
Repair the service gateway dependency protection implementation so it opens only after the failure threshold and calculates a deterministic retry time.
Evidence
- Affected surface: Cloud-native full-stack / service gateway.
- Observed failure family: calculate circuit-breaker state.
- Scope policy: tenantId must equal tenant-primary.