feat: 完善 Agent 标准交互与安全运行时

- 接入 AG-UI 运行投影、Turn 时间线和审批隔离

- 增加 Agent Skill 冻结绑定与运行时消费闭环

- 增加受控工作区、内置工具和私有 Artifact 生命周期

easyflow-ui-admin/app/package.json

@@ -13,6 +13,7 @@
     "#/*": "./src/*"
   },
   "dependencies": {
+    "@ag-ui/client": "0.0.57",
     "@codemirror/commands": "^6.10.2",
     "@codemirror/lang-javascript": "^6.2.4",
     "@codemirror/lang-python": "^6.2.1",