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tf-best-practices

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Best-practice authoring guidance AND a read-only policy gate for AWS Terraform generated by a migration skill. Load during any phase that writes a terraform/ directory — first as the "what to emit" posture rules + security-baseline spec, then after writing as the deterministic policy verdict. Read-only: it reports whether the generated Terraform passes; it never edits .tf files, never touches .phase-status.json, and never decides phase completion. Complements (does not replace) terraform fmt/init/validate.

plugins/aws-startup-advisor/skills/tf-best-practices/SKILL.md

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# tf-best-practices — Generated-IaC posture rules + read-only policy gate

A **shared authoring guide and verdict producer**, not a workflow. It answers two
questions for a phase that generates AWS Terraform:

1. **Before writing** — "what security posture must the generated `terraform/` follow?"
   (the posture rules + the `baseline.tf` account-hardening spec)
2. **After writing** — "does the generated `terraform/` pass policy?" (a deterministic,
   **read-only** verdict + a machine-readable report)

## Routing — load the part that matches your context

This skill is entered at two touchpoints in the caller's Generate flow, with the caller's
own terraform-authoring work in between. **The caller states which touchpoint it is at when it