Restore favicons using site /favicon.ico

Show each link's favicon from its origin instead of letter-only badges.

Co-authored-by: Cursor <cursoragent@cursor.com>

script.js

@@ -131,6 +131,15 @@
     }
   }
 
+  function faviconUrl(url) {
+    try {
+      const u = new URL(url);
+      return `${u.origin}/favicon.ico`;
+    } catch {
+      return "";
+    }
+  }
+
   function escapeHtml(s) {
     return String(s)
       .replaceAll("&", "&")
@@ -261,13 +270,18 @@
     const letter = escapeHtml((link.title || domain || "L").trim().slice(0, 1).toUpperCase());
     const lockAttr = state.canManage ? "" : ' disabled aria-disabled="true"';
     const lockTitle = state.canManage ? "" : ' title="관리 기능은 로그인 후 사용 가능합니다."';
+    const fav = faviconUrl(link.url);
 
     return `
       <article class="card" data-id="${escapeHtml(link.id)}">
         <div class="card-head">
           <div class="card-title">
             <div class="favicon" aria-hidden="true">
-              <div class="letter">${letter}</div>
+              ${
+                fav
+                  ? `<img src="${escapeHtml(fav)}" alt="" loading="lazy" decoding="async" referrerpolicy="no-referrer" onerror="this.remove(); this.parentNode.insertAdjacentHTML('beforeend','<div class=&quot;letter&quot;>${letter}</div>');" />`
+                  : `<div class="letter">${letter}</div>`
+              }
             </div>
             <div class="title-wrap">
               <div class="title" title="${title}">${title}</div>