Maintain the Station Terraform module itself (not test authoring). Use this skill whenever the user asks to add, change, refactor, or troubleshoot Station module behavior in root *.tf files or child module folders (application/, group/, user_assigned_identity/, hashicorp/tfe/), update variables/outputs/validations, or adjust provider/resource wiring for module consumers.
Write and maintain Terraform tests for the Station module. Use this skill whenever the user asks to add, update, fix, or run Station tests in tests/*.tftest.hcl, validate module behavior across minimum/maximum configurations, wire setup-* modules into test runs, or align test changes with Station CI selective test execution.