fix(vpc): correct create-harness VPC validation, dry-run persistence, and TUI review display (follow-up to #1671)#1682

tejaskash merged 3 commits into

mainaws/agentcore-cli:mainfrom

fix/build-infra-vpc-bugbash-followupsaws/agentcore-cli:fix/build-infra-vpc-bugbash-followupsCopy head branch name to clipboard