test(post-form): AE3 no longer references the removed hero field

The hero_image blueprint field was dropped (journal heroes come from the
first uploaded photo), so AE3 now asserts the More-options disclosure
toggles open/closed rather than probing the hero input's visibility.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/ui/post/post-form-ux.spec.js

@@ -18,12 +18,14 @@ test.afterAll(() => { created.forEach(cleanupEntry); });
 // ── AE3: advanced fields sit behind "More options" ────────────────────────────
 test('AE3: advanced fields are hidden until "More options" is expanded', async ({ page }) => {
     await page.goto('/post');
-    const hero = page.locator('input[name="data[hero_image]"]');
+    // The hero-image field was removed (journal heroes come from the first
+    // uploaded photo); force_connect/featured remain the advanced trio's members.
+    const details = page.locator('details.more-options');
 
-    await expect(page.locator('details.more-options')).toBeAttached();
-    await expect(hero).toBeHidden();               // collapsed <details> hides content
+    await expect(details).toBeAttached();
+    await expect(details).toHaveJSProperty('open', false); // collapsed by default
     await page.locator('.more-options__summary').click();
-    await expect(hero).toBeVisible();
+    await expect(details).toHaveJSProperty('open', true);
 });
 
 // ── AE1: HEIC → JPEG conversion, posted with a working thumbnail ───────────────