fix: roles page_size 200->100, add try/catch in loadOptions

frontend/src/pages/System/Users/index.tsx

@@ -50,13 +50,25 @@ const Users: React.FC = () => {
   };
 
   const loadOptions = async () => {
-    const [orgRes, roleRes]: any = await Promise.all([
-      orgApi.getTree(),
-      roleApi.list({ page_size: 200 }),
-    ]);
-    const flat = flattenOrgs(orgRes.data || []);
-    setOrgs(flat);
-    setRoles(roleRes.data || []);
+    try {
+      const [orgRes, roleRes]: any = await Promise.all([
+        orgApi.getTree(),
+        roleApi.list({ page_size: 100 }),
+      ]);
+      const flat = flattenOrgs(orgRes.data || []);
+      setOrgs(flat);
+      setRoles(roleRes.data || []);
+    } catch (e) {
+      // 分别加载，防止单个失败影响另一个
+      try {
+        const orgRes: any = await orgApi.getTree();
+        setOrgs(flattenOrgs(orgRes.data || []));
+      } catch {}
+      try {
+        const roleRes: any = await roleApi.list({ page_size: 100 });
+        setRoles(roleRes.data || []);
+      } catch {}
+    }
   };
 
   const flattenOrgs = (nodes: any[], result: any[] = []): any[] => {