This repository provides a comprehensive suite of GitHub Actions for automating Terraform and OpenTofu workflows in CI/CD pipelines. Each action (e.g., terraform-apply, terraform-plan, terraform-validate) is implemented as a standalone reusable workflow with standardized inputs, outputs, and Docker-based execution environments. The architecture features a common shell library (actions.sh) that handles tool installation, backend initialization, and shared utilities, while individual actions focus on specific operations like plan generation, state management, or pull request commenting. Key capabilities include version detection from multiple sources, backend fingerprinting for state identification, automated PR commenting with approval workflows, and support for both Terraform and OpenTofu. The project emphasizes reliability through extensive testing across versions and backends, with clear separation of concerns between action definitions, implementation logic, and documentation generation.