pub const COMMAND_VIEWER_NAME: &str = "CommandViewer";Expand description
Name of the CommandViewer pseudo-printer. It’s not a real OS device —
when clients print to it, the job is routed to the command-viewer module
which renders it into the local diagnostics web UI instead of paper.
Keep this as a single source of truth: new(), get_print_list(), the
print-job router, and availability checks all compare against this.