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)