refactor: use GEO search param instead of client-side filtering

lang/mcp/src/index.js

@@ -249,8 +249,8 @@ server.registerTool(
     });
 
     const gqlQuery = `
-      query Nodes($limit: Int, $offset: Int, $transport: String) {
-        nodes(limit: $limit, offset: $offset, transport_type: $transport) {
+      query Nodes($limit: Int, $offset: Int, $transport: String, $search: String) {
+        nodes(limit: $limit, offset: $offset, transport_type: $transport, search: $search) {
           uuid
           name
           latitude
@@ -265,23 +265,11 @@ server.registerTool(
     const data = await gqlRequest(
       geoUrl,
       gqlQuery,
-      { limit: searchQuery ? 100 : limit, offset, transport: transportType },
+      { limit, offset, transport: transportType, search: searchQuery },
       token
     );
 
-    let nodes = data.nodes ?? [];
-
-    // Filter by name if query provided
-    if (searchQuery) {
-      const q = searchQuery.toLowerCase();
-      nodes = nodes.filter(n =>
-        n.name?.toLowerCase().includes(q) ||
-        n.country?.toLowerCase().includes(q)
-      );
-      nodes = nodes.slice(0, limit);
-    }
-
-    return nodes;
+    return data.nodes ?? [];
   }
 );