Remote / foldkit-remote

Which state belongs here?

One owner per datum:

State	Owner
Route, selected item, local form state, transient UI errors	the application Model and `update`
Server-derived facts that can be refetched	`foldkit-remote`
Client-authored state that must survive offline and converge	`foldkit-sync`
Local state represented in the URL or another store	the Model, observed by `foldkit-mirror`

Remote                              Sync
  server owns the fact                client owns the edit
  cache is disposable                 intent must survive offline/restart
  refetch is recovery                 replay + reconciliation is recovery

A Surface may project all of these owners at once. Observation does not transfer ownership.