fix: make nightdrive signage reliable and legible

tests/browser/accessibility-keyboard.spec.ts

@@ -198,10 +198,18 @@ test("explicit keyboard navigation focuses a section heading without a fixed-sur
   await page.keyboard.press("Enter");
   await expect(page.locator("#contact-heading")).toBeFocused();
 
-  const geometry = await currentFocusGeometry(page);
-  expect(geometry.focusVisible).toBe(true);
-  expect(geometry.insideSafeBounds).toBe(true);
-  expect(geometry.overlapArea).toBe(0);
+  await expect.poll(async () => {
+    const geometry = await currentFocusGeometry(page);
+    return {
+      focusVisible: geometry.focusVisible,
+      insideSafeBounds: geometry.insideSafeBounds,
+      overlapArea: geometry.overlapArea,
+    };
+  }).toEqual({
+    focusVisible: true,
+    insideSafeBounds: true,
+    overlapArea: 0,
+  });
 });
 
 test("responsive navigation exposes the exact visible label as each link's accessible name", async ({