On an editable page the dictation mic in the byline stayed grey/disabled after
collab finished syncing, until an unrelated re-render (view↔edit toggle,
navigation) happened. DictationGroup read the NON-reactive `editor.isEditable`
field directly in render; `editor` comes from pageEditorAtom (a stable object
reference), so `editor.setEditable(true)` after sync (#218 gate) mutates TipTap
state without changing the atom reference — the byline never re-renders and
disabled=true sticks.
Read editable via `useEditorState` (the same reactive read the editor body
already uses), so the mic re-enables when the body flips editable and disables
again when it loses editable. The #218 pre-sync intent is preserved — just made
reactive. Test flips isEditable false→true and asserts the mic goes
disabled→enabled (fails against the pre-fix raw-field read).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
claude code agent 227
0210faabea