make compiler happy

src/app/page.tsx

@@ -20,6 +20,11 @@ type OrgData = {
   family_all_children_count: number;
 };
 
+interface VectorLike<T> {
+  get(index: number): T;
+  length: number;
+}
+
 export default function Home() {
   const [allModels, setAllModels] = useState<ModelData[]>([]);
   const [orgData, setOrgData] = useState<OrgData[]>([]);
@@ -214,7 +219,7 @@ export default function Home() {
     console.log('Children type:', type);
     setSelectedModel(model);
     setSelectedModelChildrenType(type);
-    let children;
+    let children: VectorLike<string> | string[];
     if (type === 'direct') {
       children = model.direct_children || [];
     } else {
@@ -222,11 +227,11 @@ export default function Home() {
     }
     console.log('Children:', children);
 
-    // Handle Vector data structure
+    // Handle Vector-like data structure
     if (children && typeof children === 'object' && 'get' in children && 'length' in children) {
       const vectorChildren = [];
-      for (let i = 0; i < children.length; i++) {
-        vectorChildren.push(children.get(i));
+      for (let i = 0; i < (children as VectorLike<string>).length; i++) {
+        vectorChildren.push((children as VectorLike<string>).get(i));
       }
       setSelectedModelChildren(vectorChildren);
     } else if (Array.isArray(children)) {