Prevent out-of-bounds access Make sure list is initialized in symbol editor frame Don't re-init the list more frequently than necessary Fixes https://gitlab.com/kicad/code/kicad/-/issues/16399
Initial infrastructure work; follow-ons will add more properties for schematic items. Fixes https://gitlab.com/kicad/code/kicad/-/issues/6351 Fixes https://gitlab.com/kicad/code/kicad/-/issues/14105