tracking: heraldstack-nova-forge AWS CDK repo creation

[BryanChasko]

New private repo heraldstack-nova-forge to be created. AWS account 946179428633. Gameplan doc landing in this repo at docs/architecture/heraldstack-nova-forge-gameplan.md (current PR). Repo creation blocked on (a) capability-matrix amendment via BryanChasko/haunting-kiro-cli ISSUE_MATRIX_NOVA_FORGE and ISSUE_MATRIX_CDK_TS_AUTHOR, (b) GitHub org confirmation (heraldstack vs chasko-labs vs BryanChasko — see ISSUE_NOVA_FORGE_IAM), (c) IAM identity-center role for cdk deploy.