fix(tests): update search service mock to match current API signature (#2334)

comprehensive_web_search now called with (query, max_pages, return_sources)
and returns a tuple (_context, results). The test mock still used the old
async signature with max_results/fetch_content and returned a plain list,
causing TypeError on every run.

Fixes #2331

tests/test_search_service_nondict_rows.py

@@ -3,18 +3,18 @@ import asyncio
 import services.search.service as svc_mod
 from services.search.service import SearchService
 
-
 def test_search_skips_non_dict_results(monkeypatch):
     # comprehensive_web_search aggregates external provider + cache results;
     # a malformed row (string/None) made the old loop call r.get and crash,
     # losing the whole search.
-    async def fake_search(query, max_results=10, fetch_content=False):
-        return [
-            {"url": "https://a.com", "title": "A", "snippet": "x"},
+    def fake_search(query, max_pages=10, return_sources=False):
+        results = [
+            {"url": "https://a.com", "title": "A"},
             "junk-row",
             None,
-            {"url": "https://b.com", "title": "B", "snippet": "y"},
+            {"url": "https://b.com", "title": "B"},
         ]
+        return ("", results)
 
     monkeypatch.setattr(svc_mod, "comprehensive_web_search", fake_search)
     svc = SearchService()