fix(story-mode): a phone's bar breaks after close again, now the turn picker is gone from it

The picker took a row of its own and so pushed the reading levels to the next line. With it in the
composer, close squeezed in beside the title and Save image wrapped alone. A full-width
pseudo-element between close and the levels breaks the row; its height is the gap.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/web/public/story-mode.css

@@ -256,9 +256,17 @@ body.story-open {
    picker is in the composer at the bottom. */
 @media (max-width: 600px) {
   .story-bar {
-    gap: 8px 10px;
+    gap: 0 10px;
     padding-block: 8px;
   }
+  /* The row break: a full-width item between close (order 1) and the levels (order 3). The turn
+     picker used to force it; it lives in the composer now. Its height is the gap between the rows. */
+  .story-bar::after {
+    content: '';
+    order: 2;
+    flex-basis: 100%;
+    height: 8px;
+  }
   .story-brand {
     order: 0;
     flex: 1 1 0;