fix(host): Host 控制器禁用手动增删改与按钮配置修正

HostBase 补 add/edit/delete/modify 禁用方法（节点自动注册，不支持手动操作）。_common.js 的 addUrl/editUrl/deleteUrl/exportUrl/modifyUrl 改空字符串。index.js 补 toolbar: ['refresh']（C 类页面，去掉默认的 add/delete/export）。

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

extend/base/admin/view/system/host/_common.js

@@ -2,10 +2,10 @@ var init = {
     tableElem: '#currentTable',
     tableRenderId: 'currentTableRenderId',
     indexUrl: 'system.host/index',
-    addUrl: 'system.host/add' + location.search,
-    editUrl: 'system.host/edit',
-    deleteUrl: 'system.host/delete',
-    exportUrl: 'system.host/export',
-    modifyUrl: 'system.host/modify',
+    addUrl: '',
+    editUrl: '',
+    deleteUrl: '',
+    exportUrl: '',
+    modifyUrl: '',
     set_master_url: 'system.host/setMaster',
 };

extend/base/admin/view/system/host/index.js

@@ -1,5 +1,6 @@
 $(function(){
      ua.table.render({
+        toolbar: ['refresh'],
         init: init,
         cols: [[
             {type: 'checkbox'},