The previous fix put AcceptsReturn on the rows in the DataTemplate and
missed the box you actually type new notes into, which still had it off
and only a KeyBinding for Enter — so Shift+Enter there did nothing.
Both now go through the same tunnel handler: Enter files the note,
Shift+Enter is left to the TextBox for the line break. The KeyBinding is
gone; with AcceptsReturn on it could never have fired anyway, because
TextBox consumes Enter in its own OnKeyDown before bindings or bubbling
handlers run.
Verified against the running app: a note typed with Shift+Enter is
stored as "fe\r\ndwa".
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
