The tag row under the text was a copy of the note's labels taken when the
editor opened. A #tag in the body becomes a tag on the server's side of a
save, so the copy never learned of it until the note was reopened. Every
save now hands its note back, and the row is refreshed from it.
Typing # in a prose block or a checklist item opens the tags that already
exist: prefix matches first, busiest first. Arrows move, Enter or Tab puts
the tag in, Esc closes only the menu. The grammar and ranking live in
notes/tags.ts with tests, so the menu never offers a tag the server would
not derive.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>