Scaffold Units And Stacks

Fixed scaffold on units and stacks

terragrunt scaffold read every source as an OpenTofu/Terraform module. Given a unit or a stack, which are Terragrunt configurations rather than OpenTofu/Terraform modules, it exited successfully having written an invalid terragrunt.hcl file.

Units and stacks are now scaffolded the way the Catalog TUI scaffolds them: their files are copied into the working directory for you to edit in place, along with a terragrunt.values.hcl listing every values.* reference the configuration makes.

terragrunt scaffold 'github.com/gruntwork-io/terragrunt-scale-catalog//units/aws/oidc/iam-oidc-role'

Copying refuses to overwrite: a file that would land on an existing path stops the command before anything is written. Modules and templates are unaffected and are still scaffolded from their variables.

See Scaffold for what gets copied and how the values file is filled in.