* chore(infra): remove cdk tree after hcp cutover
Delete retired CDK sources, retarget bundle/principal contract tests to
Terraform packaging, disable CDK synth in CI, and scrub deploy-adjacent docs.
* fix(test): restore exact SHOC principal pin in terraform
Pin shoc_consumer_role_arn's Terraform default and example to the trusted
ARN, and require grant sites to consume local.shoc_consumer_role_arn only.
