Follow-up to b6a9b78: register TerminalInteractedQueue resource and
door/terminal interaction systems in SimulationPlugin; add door state
save/load in save_io (open doors round-trip through SaveStateV1);
make WalkabilityMap param optional in process_door_interaction so
plugin-only tests work without a loaded map; fix information_boundaries
test missing open_doors field.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>