UAT is down (503) because sealed secrets were encrypted with the wrong
key. This commit:
- Adds groombook/overlays/uat/ with fresh postgres and auth sealed
secrets sealed with the correct UAT cluster certificate
- Adds kustomization.yaml that:
- Uses correct image tags (2026.04.03-90be1be)
- Injects all auth env vars from groombook-auth-uat
- Points to groombook-postgres-credentials-uat
- Uses UAT hostname (groombook.uat.farh.net)
- Deletes the base component's postgres-credentials SealedSecret
(namespace-scoped, not namespace-wide, causes noise in UAT)
Co-Authored-By: Paperclip <noreply@paperclip.ing>