<.provider>

Hosts a collaborative document on a page that has no form to submit. Same connection as `form/1` — the same Y.Doc, channel, local cache, `data-crdt-*` state and `crdt:ready` / `crdt:recovered` events — and the same `__crdt` context for child hooks, which find it by walking up from themselves rather than by looking for a `<form>`. What it does not do is bind form controls: no `YjsForm` is constructed, so nothing on the page can write a field value into the document. That is what makes it the right host for a read-only editor (`ConnieUI.CrdtEditor.crdt_editor/1` with `read_only`): the reader follows the live document and writes nothing to it. It also keeps no local copy by default, which `form/1` does. A cache is worth having for someone who edits, because their own unsent changes survive a refresh. For someone who only reads it is a divergence trap: the cached state is applied before the channel has said anything, and a reader's socket is read-only, so whatever the cache holds and the server does not is never reconciled. The server drops the update it is sent and the reader goes on looking at text nobody else can see. Syncing purely from the channel means a reader is either right or visibly disconnected.