feat: initial node groups

app/src/lib/node-registry/node-registry-client.ts

@@ -88,6 +88,7 @@ export class RemoteNodeRegistry implements NodeRegistry {
   }
 
   async fetchNodeDefinition(nodeId: `${string}/${string}/${string}`) {
+    if (nodeId.startsWith('__internal/')) return;
     return this.fetchJson(`nodes/${nodeId}.json`);
   }
 
@@ -109,6 +110,8 @@ export class RemoteNodeRegistry implements NodeRegistry {
           return this.nodes.get(id)!;
         }
 
+        if (id.startsWith('__internal/')) return;
+
         const wasmBuffer = await this.fetchNodeWasm(id);
 
         try {