Worked on enhancing Terraform provider functionality in the opentofu/terraform-provider-tfe and hashicorp/go-tfe repositories, focusing on speculative execution and stack enablement features. Developed and integrated the speculative_enabled attribute for Terraform Enterprise Stack resources, ensuring default handling, value mapping, and comprehensive test coverage for both create and update operations. Upgraded the go-tfe dependency to leverage recent improvements and aligned client library options with provider capabilities. Emphasized robust API design, Go programming, and infrastructure as code practices, while expanding unit and integration tests. Updated documentation and changelogs to clarify new behaviors, supporting clearer user guidance and reducing onboarding complexity for Terraform users.