Fix Jinja2/Vue delimiter conflict in index.html

templates/index.html

@@ -124,7 +124,7 @@
                             <h2 class="text-lg font-semibold flex items-center gap-2 text-slate-800">
                                 <span class="text-xl">📋</span> 切割需求
                             </h2>
-                            <span class="text-xs bg-slate-100 text-slate-600 px-2 py-1 rounded-full">{{ requirements.length }} 项</span>
+                            <span class="text-xs bg-slate-100 text-slate-600 px-2 py-1 rounded-full">${ requirements.length } 项</span>
                         </div>
                         
                         <!-- Header for reqs -->