CHANGES:
- k8s/infra/databases/memory-db.yaml: instances 3 → 2
- Updated comment from '3 instances' to '2 instances'
REASONING:
- Reduces resource overhead (high availability at 2 is sufficient)
- Maintains quorum for failover (minimum 2 for HA)
- Saves memory/CPU allocation on homelab cluster
- ArgoCD will manage rollout automatically
DEPLOYMENT:
- ArgoCD will detect spec change and reconcile
- CNPG will scale down one pod
- Data preserved (3→2 replication, no data loss)