Initial monorepo scaffold for Duoc Thu RAG medical chatbot

infra/terraform/README.md

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+# Terraform (cloud-agnostic scaffold)
+
+**Cloud provider decision is pending** (AWS vs GCP vs Azure). Modules below are
+placeholder interfaces — the concrete resource implementations (EKS/GKE/AKS,
+managed Postgres, object storage, secrets manager) get filled in once the
+provider is chosen, in Phase 6 of the build roadmap. Directory shape is
+provider-agnostic so no restructuring is needed once decided.
+
+- `modules/k8s-cluster` — managed Kubernetes cluster
+- `modules/networking` — VPC/subnets/ingress networking
+- `modules/managed-postgres` — managed Postgres instance
+- `modules/object-storage` — bucket for PDF/raw artifacts, index backups
+- `modules/secrets` — secrets manager integration
+- `envs/{dev,staging,prod}` — per-environment root modules wiring the above