fix(integration): fix collection access patterns and invalid search type

- Use items.data.first/each instead of items.first/each on WebsetItemCollection struct
- Assert WebsetItemCollection type instead of Array for list_items result
- Change type: "neural" to type: "auto" (neural is not a valid search type)

Author: benjaminjackson

test/integration/search_integration_test.rb

@@ -208,7 +208,7 @@ def test_search_with_multiple_features_combined
 
       result = client.search(
         "artificial intelligence",
-        type: "neural",
+        type: "auto",
         num_results: 5,
         start_published_date: "2025-01-01T00:00:00.000Z",
         end_published_date: "2025-12-31T23:59:59.999Z",

test/integration/websets_enrichments_integration_test.rb

@@ -315,7 +315,7 @@ def test_enrichment_values_populated_on_items
       skip "No items in webset" if items.nil? || items.empty?
 
       # Verify items have enrichment values
-      first_item = items.first
+      first_item = items.data.first
       assert first_item.key?("id")
       assert first_item.key?("properties")
 

test/integration/websets_items_integration_test.rb

@@ -101,9 +101,9 @@ def test_list_items
       # List all items in the webset
       items = client.list_items(webset_id: webset.id)
 
-      assert_instance_of Array, items
+      assert_instance_of Exa::Resources::WebsetItemCollection, items
       refute_empty items
-      items.each do |item|
+      items.data.each do |item|
         assert item.key?("id")
         # Items have a nested properties structure with the URL
         assert item.key?("properties")