feat: support selecting a project for Runtime deployment

[evanlowe]

Summary

• add a configurable project_name for cloud and hybrid Runtime deployments
• expose --project-name and --project_name through agentkit config
• preserve default project behavior when project_name is not specified
• forward the configured value to CreateRuntimeRequest.ProjectName
• scope status, update, invoke auto-discovery, and destroy to the configured project before operating on a Runtime ID
• include project_name in deployment and status metadata

Validation

• 60 related Runtime and strategy tests pass
• full suite: 1220 passed, with one existing order-dependent harness region test failing in the full run and passing in isolation
• pre-commit hooks pass, including formatting and secret scanning
• live lifecycle verification succeeded in lh-test: create, status, update, cross-project delete guard, delete, and removal confirmation