Add Copy & Delete to the selection bar

Scissors icon next to the copy actions; a single item copies as-is (image
included), a multi-selection copies as plain lines, then everything selected
is deleted.

AGENTS.md

@@ -58,7 +58,8 @@ clicking an item copies it back to the clipboard.
   There is no in-header close button: the window's own close button hides the
   panel. Composer `# Name` creates/
   switches sections. Click = select (Shift+click for a range); the selection
-  bar offers Copy (single item), Copy as List, Copy as Lines and Delete;
+  bar offers Copy (single item), Copy as List, Copy as Lines, Copy & Delete
+  (scissors icon) and Delete;
   right-click = context menu acting on the whole selection (Copy, Copy as List,
   Copy as Lines, Copy & Delete, Done, Edit, Open, Merge, Move To, Delete). Esc clears the
   selection before it hides the panel. Selection is scoped to the current view: