A production rollout exposes a contract mismatch between the UI boundary and the owning service. The affected area is SSR loader.
Repair the SSR loader cache lifecycle implementation so it separates purge, refresh, and escalation actions by staleness and risk.
Evidence
- Affected surface: Full-stack frontend focus / SSR loader.
- Observed failure family: plan cache invalidation.
- Scope policy: region must equal eu-west.