- Move connect-proxy and https-proxy into proxy/
- Move certificate-authority, backup-manager, ssh-manager, rdp-manager into managers/
- Move messenger.js into host/
- Move test-dirname.cjs into test/
- Update imports, CI lint paths, and ARCHITECTURE.md
- Import host/message-router.js and holesail-manager/index.js directly
- Delete host.js and holesail-manager.js
- Drop shim entries from CI syntax checks
- Update ARCHITECTURE.md diagram and file table