Save as combo now keeps all picked nodes but subgraphs, with the links
between them. Model drop-downs and text boxes stay the slots; nodes
without slots are listed in the editor under "Nodes put back as saved"
with their values and go back exactly as saved. Inputs fed by links from
unpicked nodes are stored in structure.open, and the save dialog, the
editor and the card say which ones to wire after putting it down. Cards
of combos without models name their nodes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
