Settings and the shortcuts list close from the corner

Both have nothing to confirm, so their only button was a lone X at the
foot of the card, below the fold of a long Settings card. A dialog with a
confirm keeps Cancel beside it at the bottom, where the pair belongs.

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

web/src/player.ts

@@ -191,8 +191,7 @@ function keysModal(){
     ['Anywhere'],
     [k('?'),'This list'],[k('Esc'),'Close a dialog'],
   ];
-  openModal(`<h3>Keyboard shortcuts</h3><table class="keys">${rows.map(([a,b])=>b===undefined
-      ?`<tr><th colspan="2">${a}</th></tr>`:`<tr><td>${a}</td><td>${b}</td></tr>`).join('')}</table>
-    <div class="cardacts"><button class="btn ico" onclick="closeModal()" title="Close" aria-label="Close">${ICON.close}</button></div>`);
+  openModal(`<button class="iconbtn cardx" onclick="closeModal()" title="Close" aria-label="Close">${ICON.close}</button><h3>Keyboard shortcuts</h3><table class="keys">${rows.map(([a,b])=>b===undefined
+      ?`<tr><th colspan="2">${a}</th></tr>`:`<tr><td>${a}</td><td>${b}</td></tr>`).join('')}</table>`);
 }