CLI-generated directory as a filesystem path or file: URL.
Relative paths resolve against the working directory at factory invocation.
HTTP(S) URLs are rejected; absent/corrupt files cause an explicit error.
OptionalonObserver for verification and readiness; local reads set fromCache: true.
OptionalsignalInitialization-only cancellation; detached when the factory resolves.
Required local-asset configuration for the Node factory; never enables networking.