test(e2e): stop the nearby-schools journey clicking a card it scrolled past

The assertion that adding to compare does not reset the carousel failed on
staging: 537 → 2. The app was not at fault. Playwright scrolls a target into
view before clicking, and the test clicked the FIRST card's button after
paging the row to the end — so Playwright scrolled the container back to the
start, and the assertion measured that.

Reproduced on a static page with no React on it: a snap scroller at 615,
Playwright clicks the off-screen first card, scrollLeft becomes 2. Scroll-snap
was ruled out first — mandatory, proximity and no-snap all behave identically
when the button mutates in place.

Now clicks the last card's button, which is visible at the end of the travel,
and allows a few pixels for snap and sub-pixel adjustment while still failing
on a reset to the start. The property was never actually under test before;
it is now.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

e2e/tests/journeys.spec.ts

@@ -2784,12 +2784,23 @@ test('nearby schools link on to other schools and into compare', async ({ page }
 
   // The compare hand-off, and the row must not jump back to the start when the
   // footer re-renders underneath it.
+  //
+  // Click the LAST card's button, not the first. Playwright scrolls a target
+  // into view before clicking it, so clicking card one while the row is paged
+  // to the end scrolls the container back to the start — and the assertion
+  // below then measures Playwright's own scrolling rather than the app's.
+  // That is what this test did on its first staging run: 537 → 2, reproduced
+  // afterwards on a static page with no React on it at all.
+  //
+  // A few pixels of snap or sub-pixel adjustment are fine; a reset to the
+  // start is not, which is the whole point of the check.
   const offsetBefore = await scroller.evaluate((node: HTMLElement) => node.scrollLeft);
-  await section.getByRole('button', { name: /Add to compare/ }).first().click();
+  await section.getByRole('button', { name: /Add to compare/ }).last().click();
   await expect(
     section.getByRole('button', { name: /Added to compare/ }).first(),
   ).toBeVisible();
-  expect(await scroller.evaluate((node: HTMLElement) => node.scrollLeft)).toBe(offsetBefore);
+  const offsetAfter = await scroller.evaluate((node: HTMLElement) => node.scrollLeft);
+  expect(Math.abs(offsetAfter - offsetBefore)).toBeLessThanOrEqual(8);
 });
 
 /**