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/dialogs.ts

@@ -218,7 +218,7 @@ function due(ts){
 async function prefsModal(){
   const g = await api('/api/settings');
   const admin = !!(S.me&&S.me.admin);
-  openModal(`<h3>Settings</h3>
+  openModal(`<button class="iconbtn cardx" onclick="closeModal()" title="Close" aria-label="Close">${ICON.close}</button><h3>Settings</h3>
     <div class="field"><label>Theme</label>
       <select id="stheme">${Object.entries(THEMES).map(([k,t])=>
         `<option value="${k}"${theme.name===k?' selected':''}>${esc(t.name)}</option>`).join('')}</select></div>
@@ -238,8 +238,7 @@ async function prefsModal(){
       <span class="hint">${everyText(g.every_mins)}, for every feed that does not set its own.
       ${admin?'This and the rest of the server\'s settings are on the <a href="/admin">admin page</a>.':'Only an admin changes this.'}</span></div>
     <div class="field"><label>Download folder</label>
-      <span class="hint" style="overflow-wrap:anywhere">${esc(g.download_dir)}</span></div>
-    <div class="cardacts"><button class="btn ico" onclick="closeModal()" title="Close" aria-label="Close">${ICON.close}</button></div>`);
+      <span class="hint" style="overflow-wrap:anywhere">${esc(g.download_dir)}</span></div>`);
   $('#stheme').onchange=e=>setTheme(e.target.value,undefined,true);
   $('#smode').onchange=e=>setTheme(undefined,e.target.value,true);
   $('#gopml').onclick=opmlModal;