[Feature] [Long Term] Self-hostable server with WebUI

Hi, I feel a way to take this project to the next level as well as bring new eyes to this, would be to have an optional back-end where to offload cron jobs and checks for updates, as well as having a web ui

Stretch goal would be to have an API that we can use to integrate into self-hosted systems such as shopify alternatives or homeassistant.

No files, tests, or entry points are named. Start by clarifying the optional server, WebUI, cron jobs, update checks, and possible API scope, then define the architecture and acceptance criteria for a self-hostable deployment.

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