A filed note stays filed, and the handles are asked for

Three things that all came from chapters being thought through too late.

A note put into a chapter came back out of it a few seconds later. The
server had it right the whole time; every sync rebuilds the local copy
from the server's answer, and the function doing that never carried
chapter_id — so each sync handed back a note belonging to no chapter and
the notebook took it in again. The bin's query left the column out too,
which would have unfiled anything restored from it.

A separator drawn in a notebook vanished when a chapter was opened.
"Which chapter is open" and "which list is on screen" were one value.
Opened beside or below, the list still shows the notebook — but
everything around it had switched to the chapter, so the notebook's own
separators were filtered away and a drag among its rows was measured
against the chapter's notes, found nothing, and did nothing.

And where a new note lands is now visible and yours to choose: pressing
in either place makes it the one being worked in, marked with a line
along its top and the word "here", and the + button names it.

Rearranging becomes a mode, switched on beside the sort menu — until
then no row wears a grip and none can be dragged. Filing a note is back
in the row's own menu, where starring and exporting already are; the
button that had appeared in every row is gone with its dialog. The
account panel closes with Escape.

Thirteen suites green: 335 browser checks, 241 unit tests.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

backend/server.js

@@ -1085,7 +1085,9 @@ app.get("/api/notes", authMiddleware, (req, res) => {
 });
 
 app.get("/api/notes/trash", authMiddleware, (req, res) => {
-  const notes = db.prepare("SELECT id, user_id, notebook_id, type, title, starred, sort_order, created_at, updated_at, deleted_at, version FROM notes WHERE user_id = ? AND deleted_at IS NOT NULL ORDER BY deleted_at DESC").all(req.userId);
+  // `chapter_id` travels with it: a note restored from the bin belongs back in
+  // the chapter it was filed in, not loose in the notebook.
+  const notes = db.prepare("SELECT id, user_id, notebook_id, chapter_id, type, title, starred, sort_order, created_at, updated_at, deleted_at, version FROM notes WHERE user_id = ? AND deleted_at IS NOT NULL ORDER BY deleted_at DESC").all(req.userId);
   res.json(notes);
 });