Previously the paperclip button created a one-shot attachment that was
only included for the single message it was sent with, then discarded.
Now selecting a note via the picker calls includeNote() directly, so it
appears in the "In Context" sidebar and stays for the entire conversation
— consistent with clicking "+" on a suggested note.
Removed attachedNote ref, removeAttachedNote(), the pinned-note sidebar
block, and the contextNoteId/contextNoteTitle sendMessage arguments that
are no longer needed.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
bvandeusen
5c84c28a67