Advanced AI Prompt for Local to Remote Terraform State Migration

Act as a Cloud Infrastructure Lead. Provide a meticulous Standard Operating Procedure (SOP) for permanently migrating an unencrypted, local Terraform state file currently located at [LOCAL_PATH] for the critical [ENVIRONMENT] environment up to an enterprise-grade remote backend defined by [REMOTE_BACKEND_CONFIG]. Provide the exact `terraform init` CLI flags and backend HCL block required to successfully trigger the migration prompt. Detail the cryptographic checksum verification process to guarantee total data integrity during the transfer. Finally, supply a secure file-shredding command to irreversibly destroy the local `terraform.tfstate` and `terraform.tfstate.backup` files, mitigating the risk of leaked plaintext secrets.