Interface FootnoteEditorHandleExperimental

Whether DOM focus is anywhere in this editor - its note text or its own controls. Reads the document's active element, so it stays true while the window itself is not focused.

Applies to the parent editor whatever inline edit is still sitting inside the live-apply debounce, right now.

A host that ends an editing session must call this BEFORE tearing its own bookkeeping down. Unmounting this component flushes too, but that happens a commit later, by which time the host no longer recognizes the apply as the session's own tail — and a note replacement that arrives unattributed is indistinguishable from a newly inserted note. A no-op when nothing is pending or the note is unchanged.

Puts DOM focus back in the note text, on the caret the editor last held.