fix(search): align content URL guards

* Stabilize full test collection

* Align search content URL guards

tests/test_search_content_url_guards.py

@@ -0,0 +1,37 @@
+import ipaddress
+
+import pytest
+
+from services.search import content as service_content
+from src.search import content as src_content
+
+
+@pytest.mark.parametrize("module", [src_content, service_content])
+@pytest.mark.parametrize("url", [
+    "http://printer.local/",
+    "http://nas.lan/",
+    "http://admin.internal/",
+    "http://service.intranet/",
+    "http://[::ffff:169.254.169.254]/latest/meta-data/",
+    "http://224.0.0.1/",
+    "http://[ff02::1]/",
+    "http://[::]/",
+])
+def test_search_content_url_guard_blocks_internal_names_and_address_classes(module, url):
+    assert module._public_http_url(url) is False
+
+
+@pytest.mark.parametrize("module", [src_content, service_content])
+def test_search_content_url_guard_blocks_dns_to_multicast(monkeypatch, module):
+    monkeypatch.setattr(
+        module,
+        "_resolve_hostname_ips",
+        lambda host: [ipaddress.ip_address("224.0.0.1")],
+    )
+
+    assert module._public_http_url("https://example.test/page") is False
+
+
+@pytest.mark.parametrize("module", [src_content, service_content])
+def test_search_content_url_guard_still_allows_public_ip(module):
+    assert module._public_http_url("https://93.184.216.34/") is True