fix(ui): right-align the confirm-move glyph under the preview caption

The ✅ box already ended at var(--pad) from the screen edge, but place-items:
center centred the glyph inside the 56px box, so it sat ~14px left of the green
preview caption (.scores, text-align:right at the same var(--pad)). Right-align
the glyph (place-items: center end) so its right edge lands under the caption's.

ui/src/game/Game.svelte

@@ -1471,14 +1471,16 @@
     min-width: 0;
   }
   /* A borderless icon button (like the tab bar), not a filled accent button — and disabled
-     while the pending word is known to be illegal. */
+     while the pending word is known to be illegal. The glyph is right-aligned within its box so
+     its right edge lands under the right edge of the preview caption above it (both sit at
+     var(--pad) from the screen edge — .status and .rack-row share that padding). */
   .make {
     min-width: 56px;
     background: none;
     color: var(--text);
     border: none;
     display: grid;
-    place-items: center;
+    place-items: center end;
     font-size: 1.8rem;
   }
   .make:disabled {