more headless patches to address pipeline clog; 'two-browsers' may not have been doing anything before

src/functional_tests/base.py

@@ -38,17 +38,10 @@ def wait(fn):
 class FunctionalTest(StaticLiveServerTestCase):
     # Helper methods
     def _make_browser(self, width=1366, height=900):
-        """Create a Firefox instance sized to width×height.
-        In headless CI, pass --width/--height as binary args so the CSS
-        media query (orientation: landscape/portrait) is correct from the
-        first paint — set_window_size() alone is unreliable in headless mode.
-        """
+        """Create a Firefox instance sized to width×height."""
         options = webdriver.FirefoxOptions()
-        headless = os.environ.get("HEADLESS")
-        if headless:
+        if os.environ.get("HEADLESS"):
             options.add_argument("--headless")
-            options.add_argument(f"--width={width}")
-            options.add_argument(f"--height={height}")
         browser = webdriver.Firefox(options=options)
         browser.set_window_size(width, height)
         return browser

src/functional_tests/test_room_tray.py

@@ -41,11 +41,17 @@ class TrayTest(FunctionalTest):
         Applet.objects.get_or_create(slug="new-note", defaults={"name": "New Note"})
 
     def _switch_to_landscape(self):
-        """Recreate the browser at landscape dimensions (900×500).
-        Needed in headless CI where set_window_size() alone doesn't
-        update the CSS orientation media query reliably."""
+        """Recreate the browser at landscape dimensions (900×500) and wait
+        until window.innerWidth > window.innerHeight confirms the CSS
+        orientation media query will fire correctly."""
         self.browser.quit()
         self.browser = self._make_browser(900, 500)
+        self.browser.get('about:blank')
+        self.wait_for(lambda: self.assertTrue(
+            self.browser.execute_script(
+                'return window.innerWidth > window.innerHeight'
+            )
+        ))
 
     def _simulate_drag(self, btn, offset_x):
         """Dispatch JS pointer events directly — more reliable than GeckoDriver drag."""