公开页补齐自引用 Canonical 与按类型的结构化数据，图片补上说明文字。

后台设置和内容编辑改成可导航布局；部署用访客 origin 生成 Canonical，避免落到容器地址。

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

frontend/components/Footer.tsx

@@ -10,7 +10,7 @@ function realVersion(pkgVersion: string): string {
   return !pkgVersion || pkgVersion === "0.0.0" || pkgVersion === "0.1.0" ? "" : pkgVersion;
 }
 
-// 极简页脚：版权 + 合规链接 + 实时性能指标
+// 极简页脚：左侧版权 / 版本 / 耗时，右侧备案等链接
 export default function Footer({
   siteName = "姜十三社区",
   links = [],
@@ -20,6 +20,7 @@ export default function Footer({
 }) {
   const year = new Date().getFullYear();
   const brand = siteName.trim() || "姜十三社区";
+  const visibleLinks = links.filter((item) => item.label.trim() && item.url.trim());
 
   return (
     <footer
@@ -29,10 +30,13 @@ export default function Footer({
       }}
     >
       <div className="max-w-[1440px] mx-auto px-4 sm:px-6 py-4 flex items-center justify-between gap-x-4 gap-y-2 flex-wrap">
-        <span className="meta text-[12px] whitespace-nowrap">© {year} {brand}</span>
-        {links.length > 0 ? (
-          <nav aria-label="页脚链接" className="flex flex-wrap items-center gap-x-3 gap-y-1 min-w-0">
-            {links.map((item) => (
+        <div className="flex items-center gap-x-3 gap-y-1 flex-wrap min-w-0">
+          <span className="meta text-[12px] whitespace-nowrap">© {year} {brand}</span>
+          <FooterTiming version={realVersion(pkg.version)} />
+        </div>
+        {visibleLinks.length > 0 ? (
+          <nav aria-label="页脚链接" className="flex flex-wrap items-center justify-end gap-x-3 gap-y-1 min-w-0 ml-auto">
+            {visibleLinks.map((item) => (
               <a
                 key={`${item.label}-${item.url}`}
                 href={item.url}
@@ -44,7 +48,6 @@ export default function Footer({
             ))}
           </nav>
         ) : null}
-        <FooterTiming version={realVersion(pkg.version)} />
       </div>
     </footer>
   );