A production rollout exposes a contract mismatch between the UI boundary and the owning service. The affected area is migration rollout.
Repair the migration rollout dependency health implementation so it derives overall health from critical failures, latency, and degraded dependencies.
Evidence
- Affected surface: Full-stack backend focus / migration rollout.
- Observed failure family: summarize dependency health.
- Scope policy: qualityState must equal verified.