infra-terraform-review

@ivanshamaev

Terraform code review — module structure (main/variables/outputs/modules layout), variable validation blocks, type constraints, sensitive variables, locals vs variables, resource naming conventions, provider version pinning, data sources vs resources, module composition patterns, state management (remote backend S3/GCS), workspace strategy, dependency management (depends_on vs implicit), terraform fmt/validate/tflint checks, DRY with Terragrunt