chore(zIndexMode): use basic as default

packages/system/src/types/general.ts

@@ -375,6 +375,5 @@ export type OnBeforeDeleteBase<NodeType extends NodeBase = NodeBase, EdgeType ex
  * `manual` mode does not apply any automatic z-indexing.
  *
  * @public
- * @default 'auto'
  */
 export type ZIndexMode = 'auto' | 'basic' | 'manual';

packages/system/src/utils/edges/general.ts

@@ -51,7 +51,7 @@ export function getElevatedEdgeZIndex({
   selected = false,
   zIndex,
   elevateOnSelect = false,
-  zIndexMode = 'auto',
+  zIndexMode = 'basic',
 }: GetEdgeZIndexParams): number {
   const manualZIndexMode = isManualZIndexMode(zIndexMode);
 

packages/system/src/utils/store.ts

@@ -37,7 +37,7 @@ const defaultOptions = {
   nodeOrigin: [0, 0] as NodeOrigin,
   nodeExtent: infiniteExtent,
   elevateNodesOnSelect: true,
-  zIndexMode: 'auto' as ZIndexMode,
+  zIndexMode: 'basic' as ZIndexMode,
   defaults: {},
 };