Top-level entry: short-circuits on --validate or --cleanup-card-refunds,
otherwise checks the browser fonts, assembles everything, sweeps the staging
leftovers of the runtime stores, and runs the importer pipeline to completion.
Returns Promise<never>
Promise that never resolves on the main path (process
exits before resolution). Only awaits on the CLI-mode
short-circuits, which themselves terminate the process before return.
Top-level entry: short-circuits on --validate or --cleanup-card-refunds, otherwise checks the browser fonts, assembles everything, sweeps the staging leftovers of the runtime stores, and runs the importer pipeline to completion.