fix: 修正后台管理模板API路径为 /api/admin/xxx

templates/index.html

@@ -178,7 +178,7 @@
 
     <script>
         async function loadStats() {
-            const res = await fetch('/api/stats');
+            const res = await fetch('/api/admin/stats');
             const data = await res.json();
             
             document.getElementById('stat-requests').textContent = data.total_requests;
@@ -194,7 +194,7 @@
         }
 
         async function loadProviders() {
-            const res = await fetch('/api/providers');
+            const res = await fetch('/api/admin/providers');
             const providers = await res.json();
             
             const container = document.getElementById('providerList');