feat: add non-destructive adjustment layers

editor/document-indexes.ts

@@ -75,6 +75,8 @@ export function resolveIndexedLayerBounds(index: DocumentReadIndex, layerOrId: L
   switch (layer.type) {
     case "group":
       return unionLayerBounds(index, layer.children);
+    case "adjustment":
+      return undefined;
     case "image":
     case "raster": {
       const asset = index.assetById.get(layer.assetId);
@@ -152,6 +154,7 @@ function unionLayerBounds(index: DocumentReadIndex, layers: readonly Layer[]): R
       stack.push(...layer.children);
       continue;
     }
+    if (layer.type === "adjustment") continue;
     const layerBounds = resolveIndexedLayerBounds(index, layer);
     if (!layerBounds) continue;
     bounds = bounds ? unionRects(bounds, layerBounds) : layerBounds;