fix: 帖行评论数勿贴右缘，手机 SSR 顶栏/页脚与 React 同构

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

handler/ssr_icons.go

@@ -60,6 +60,14 @@ func ssrIconPlus() string {
 	)
 }
 
+func ssrIconMenu() string {
+	return ssrSVG(18,
+		`<path d="M4 5h16"/>`,
+		`<path d="M4 12h16"/>`,
+		`<path d="M4 19h16"/>`,
+	)
+}
+
 func ssrIconMoon() string {
 	return ssrSVG(18,
 		`<path d="M20.985 12.486a9 9 0 1 1-9.473-9.472c.405-.022.617.46.402.803a6 6 0 0 0 8.268 8.268c.344-.215.825-.004.803.401"/>`,