feat(mcp): add Docs/Tools tablist on detail page, tidy sidebar label

Wrap the MCP detail right panel in a compact left-aligned Docs/Tools
tablist (Docs first). Move the tool count into the Tools tab label and
drop the redundant panel title/subtitle; connecting/failed states still
render the status component. Shorten the sidebar 'Installed Extensions'
entry to 'Installed' across all 8 locales, and add tabTools/tabDocs/
noReadme strings.

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

@@ -2,7 +2,7 @@ const zhHant = {
   sidebar: {
     home: '首頁',
     extensions: '擴展',
-    installedPlugins: '已安裝外掛',
+    installedPlugins: '已安裝',
     pluginMarket: '外掛市場',
     mcpServers: 'MCP 伺服器',
     addExtension: '添加擴展',
@@ -736,6 +736,9 @@ const zhHant = {
     toolsFound: '個工具',
     unknownError: '未知錯誤',
     noToolsFound: '未找到任何工具',
+    tabTools: '工具',
+    tabDocs: '文件',
+    noReadme: '暫無文件',
     parseResultFailed: '解析測試結果失敗',
     noResultReturned: '測試未返回結果',
     getTaskFailed: '獲取任務狀態失敗',