feat(web): add view layer lightgroup authoring

web/app/src/workers/web-engine.worker.ts

@@ -821,6 +821,13 @@ function assertFutureCapability(payload: Extract<WebEngineRequest["command"], {
       }
       return;
     }
+    case "setSceneViewLayerLightgroups": {
+      const scene = currentSnapshot?.scenes.find((candidate) => candidate.id === payload.dataId);
+      if (!scene || typeof payload.layerName !== "string" || payload.layerName.length === 0 || !Array.isArray(payload.lightgroups) || payload.lightgroups.length > 128) throw report("RENDER_PROPERTY_INVALID", "Scene ViewLayer lightgroup target is invalid");
+      const names = new Set<string>();
+      for (const name of payload.lightgroups) { if (typeof name !== "string" || name.length === 0 || new TextEncoder().encode(name).byteLength > 63 || names.has(name)) throw report("RENDER_PROPERTY_INVALID", "Scene lightgroup names must be unique and bounded"); names.add(name); }
+      return;
+    }
     case "setGeometryNodeGraph": {
       const snapshot = currentSnapshot;
       const availableResourceIds = new Set([