chore: import upstream snapshot with attribution

tests/models/test_trace_config.py

@@ -0,0 +1,32 @@
+from agents.model_settings import ModelSettings
+from agents.models._trace import model_config_for_trace, sanitize_url_for_trace
+
+
+def test_sanitize_url_for_trace_strips_auth_query_and_fragment() -> None:
+    assert (
+        sanitize_url_for_trace("https://user:pass@example.com/v1?api-key=secret#fragment")
+        == "https://example.com/v1"
+    )
+    assert sanitize_url_for_trace("https://example.com/v1?token=secret") == "https://example.com/v1"
+
+
+def test_model_config_for_trace_sanitizes_base_url_and_omits_request_extras() -> None:
+    config = model_config_for_trace(
+        ModelSettings(
+            temperature=0.5,
+            extra_headers={"Authorization": "Bearer provider-token"},
+            extra_query={"api-key": "query-token"},
+            extra_body={"secret": "body-token"},
+            extra_args={"api_key": "arg-token"},
+        ),
+        base_url="https://user:pass@example.com/v1?api-key=secret#fragment",
+        extra_config={"model_impl": "test-model"},
+    )
+
+    assert config["temperature"] == 0.5
+    assert config["base_url"] == "https://example.com/v1"
+    assert config["model_impl"] == "test-model"
+    assert "extra_headers" not in config
+    assert "extra_query" not in config
+    assert "extra_body" not in config
+    assert "extra_args" not in config