feat(monitoring): improve network activity metrics with live domain request rates and backend identifiers

test/test.source-profiles-api.ts

@@ -35,7 +35,11 @@ tap.test('should login as admin', async () => {
   });
 
   expect(response).toHaveProperty('identity');
-  adminIdentity = response.identity;
+  const responseIdentity = response.identity;
+  if (!responseIdentity) {
+    throw new Error('Expected admin login response to include identity');
+  }
+  adminIdentity = responseIdentity;
 });
 
 // ============================================================================