The chooser's marks are × at the left, tappable once marked

From the development repository at 5252a58.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

tests/test_end_to_end.py

@@ -2188,6 +2188,15 @@ class EndToEndTest(unittest.TestCase):
         self.assertEqual(firefox.run("""
             return [...document.querySelectorAll('#chooser_pages .page_slot')].map((s) => s.classList.contains('marked'));
         """)[:3], [True, True, False])
+        # A marked card is dimmed, and its mark must still be what a tap
+        # at the mark's place hits, so that the second tap unmarks and
+        # does not load the page (a scripted click would not tell).
+        self.assertEqual(firefox.run("""
+            return [...document.querySelectorAll('#chooser_pages .page_slot')].slice(0, 3).map((slot) => {
+              const r = slot.querySelector('button.mark').getBoundingClientRect();
+              return document.elementFromPoint(r.left + r.width / 2, r.top + r.height / 2).classList.contains('mark');
+            });
+        """), [True, True, True])
         firefox.run("document.getElementById('chooser_delete').click();")
         self.assertEqual(delete(), "Press again to move 2 pages to the Trash")
         # Marking something else takes the first press back.