"State management" is almost always sold as a UI concern — a store bolted onto a component tree. But a FeatureCell™ is plain TypeScript with no framework dependency, so it runs anywhere a runtime does. This post shows SDuX Vault™ orchestrating deterministic, pipeline-committed state inside Deno with nothing but @sdux-vault/core.
Why State Management Isn't Just a UI Problem
The moment you have a value that changes over time, that multiple operations read and write, and that must stay consistent while async work is in flight, you have a state management problem — whether or not a screen is involved. A CLI that fetches records in batches, a job that hydrates a cache, an edge function that tracks a counter: all of them coordinate mutable state under concurrency.
Most libraries answer that problem only for the browser. They wire their store to a component tree and assume a render loop exists. A FeatureCell makes no such assumption. It is a headless runtime primitive: you create it, you commit to it, and you read confirmed snapshots back — no DOM, no framework, no render cycle required.
A FeatureCell Is Plain TypeScript
