feat(exports): export datagram handler types and align tests with updated nftables and route security APIs

test/test.nftables-integration.simple.ts

@@ -79,18 +79,23 @@ testFn('NFTables integration tests', async () => {
   const status = await smartProxy.getNfTablesStatus();
   console.log('NFTables status:', JSON.stringify(status, null, 2));
 
-  expect(Object.keys(status).length).toEqual(routes.length);
+  if (!status) {
+    throw new Error('Expected NFTables status after SmartProxy start');
+  }
 
-  for (const routeStatus of Object.values(status)) {
-    expect(routeStatus.active).toBeTrue();
-    expect(routeStatus.ruleCount.total).toBeGreaterThan(0);
+  expect(status.activeGroups).toEqual(routes.length);
+  expect(Object.keys(status.groups).length).toEqual(routes.length);
+
+  for (const routeStatus of Object.values(status.groups)) {
+    expect(routeStatus.ruleCount).toBeGreaterThan(0);
+    expect(routeStatus.createdAt).toBeGreaterThan(0);
   }
 
   await smartProxy.stop();
   console.log('SmartProxy stopped');
 
   const finalStatus = await smartProxy.getNfTablesStatus();
-  expect(Object.keys(finalStatus).length).toEqual(0);
+  expect(finalStatus).toEqual(null);
 });
 
 export default tap.start();