feat: add plugin extension pages (iframe rendering, Page SDK, security hardening, i18n)

Co-Authored-By: Typer_Body <mcjiekejiemi@163.com>

web/src/i18n/locales/zh-Hans.ts

@@ -5,6 +5,7 @@ const zhHans = {
     installedPlugins: '已安装插件',
     pluginMarket: '插件市场',
     mcpServers: 'MCP 服务器',
+    pluginPages: '扩展页',
     quickStart: '快速开始向导',
   },
   common: {
@@ -465,6 +466,7 @@ const zhHans = {
       Command: '命令',
       KnowledgeEngine: '知识引擎',
       Parser: '解析器',
+      Page: '扩展页',
     },
     uploadLocal: '本地上传',
     debugging: '调试中',
@@ -1233,6 +1235,10 @@ const zhHans = {
       backToWorkbench: '返回工作台',
     },
   },
+  pluginPages: {
+    selectFromSidebar: '从侧边栏选择一个扩展页',
+    invalidPage: '无效的扩展页',
+  },
 };
 
 export default zhHans;