feat: 添加 cloudflare_pages、mysql_d1_backup_scheduler，更新 start_system、ensemble_models 及配置文件

cloudflare_pages/functions/api/status.js

@@ -0,0 +1,15 @@
+function json(data, status = 200) {
+  return new Response(JSON.stringify(data), {
+    status,
+    headers: { "content-type": "application/json; charset=UTF-8" },
+  });
+}
+
+export async function onRequestGet(context) {
+  return json({
+    success: true,
+    status: "running",
+    server_time: new Date().toISOString(),
+    version: "pages-1.0.0",
+  });
+}