Fabrics

A Fabric is the substrate a Ref lives on. One page per Fabric: the Refs it ships, the Interactions on top of them, the shape of what it stores.

Fabric	Module	What
mem	`nu.mem`	In-process fabric: plain nested Python dicts as the data bag. Zero setup.
virtuals	`nu.v`	Virtual collections over any KV backend. Persistent, paged, view-composable.
ui	`nu.ui`	Reactive UI fabric: shape trees rendered live in the browser.
ray	`nu.ray`	Distributed fabric backed by Ray actors and object refs.
invisibles	`nu.invisibles`	Transparent remote objects: local calls, remote execution.