13. Saved order templates

Let returning customers save frequent orders and reload them in one click.

Save: enter quantities → Save order → name it (max 128 characters) → Save.

Load / manage: click Saved orders to see each template with its name, item count and date, and per-template Load, Overwrite and Delete actions.

Loading replaces the grid quantities with the saved values; if some saved variants no longer exist, a toast reports how many were skipped. Delete asks for confirmation and can't be undone.