refactor: rename browser submodule to _browser to avoid shadowing browser()

tests/unit/test_browser.py

@@ -4,7 +4,7 @@ from unittest.mock import MagicMock
 import pytest
 from selenium.common.exceptions import WebDriverException
 
-from wabot.browser import Browser
+from wabot._browser import Browser
 from wabot.pacing import HumanPacing, NoPacing
 from wabot.page import Page
 
@@ -124,15 +124,7 @@ class TestQuit:
         driver.quit.assert_called_once_with()
 
     def test_quit_stops_managed_service(self, monkeypatch):
-        import sys
-
-        # NOTE(Task 12 wiring fix): `import wabot.browser as browser_mod` would
-        # resolve to `wabot.browser` the FUNCTION (the public API added in
-        # Task 12 shadows the submodule attribute of the same name on the
-        # `wabot` package once `wabot/__init__.py` defines `def browser(...)`).
-        # sys.modules keeps the real submodule reachable regardless of what
-        # the package's own `browser` attribute is rebound to.
-        browser_mod = sys.modules["wabot.browser"]
+        import wabot._browser as browser_mod
 
         stopped = []
         monkeypatch.setattr(browser_mod, "stop_service", lambda pid: stopped.append(pid))
@@ -144,10 +136,7 @@ class TestQuit:
         store.remove.assert_called_once_with("s1")
 
     def test_quit_removes_record_even_if_driver_quit_raises(self, monkeypatch):
-        import sys
-
-        # see NOTE in test_quit_stops_managed_service above
-        browser_mod = sys.modules["wabot.browser"]
+        import wabot._browser as browser_mod
 
         monkeypatch.setattr(browser_mod, "stop_service", lambda pid: None)
         driver, store = MagicMock(), MagicMock()