Summary

• classify emart24 inventory upstream 403 responses as degraded, matching the existing emart24 product handling
• guard CGV client list normalization when upstream data is not an array
• add regression coverage for the recent Health Checks and External Smoke failure modes

Failure logs checked

• Health Checks run 27876035040: emart24.inventory failed on upstream 403 Forbidden
• Health Checks run 27562036861: same emart24.inventory upstream 403 failure
• External Smoke run 27564230273: CGV theaters failed with (response.data || []).flatMap is not a function

Verification

• npm test -- tests/app/app-health-checks.test.ts tests/services/cgv/client.test.ts
• npm run build
• npm run check