remove the --profile flag on windows open and add opening a new window with a url

tests/test_api.py

@@ -471,6 +471,22 @@ class TestWindows:
             {"id": 2, "tabCount": 3, "state": "maximized", "browser": "work"},
         ]
 
+    def test_windows_open_without_url(self, b, mock_send):
+        mock_send.return_value = {"id": 5}
+
+        result = b.windows_open()
+
+        assert result == {"id": 5}
+        mock_send.assert_called_once_with("windows.open", {"url": None}, profile=None)
+
+    def test_windows_open_with_url(self, b, mock_send):
+        mock_send.return_value = {"id": 9}
+
+        result = b.windows_open("https://example.com")
+
+        assert result == {"id": 9}
+        mock_send.assert_called_once_with("windows.open", {"url": "https://example.com"}, profile=None)
+
 
 # ── Tab model ─────────────────────────────────────────────────────────────────