Adds or updates automated coverage for a Terraform change by first discovering the repository's existing approach, native terraform test HCL, Terratest, or plan-and-policy assertions, matching it rather than imposing a new one, deciding whether the change needs a test at all, and running the suite in a bounded verify loop. Use when a Terraform change adds or changes a module input or output, changes resource behavior, fixes a bug, or touches variable validation, and when deciding where a new test belongs in an unfamiliar Terraform repository.
