feat(workspace): enhance status cards and terminal groups

add memory and disk monitoring cards with richer server metrics
and localized labels in the workspace status panel

group ssh terminal tabs by server with per-group add actions to
make multi-terminal relationships clearer

sync helloagents archive and module documentation for the
completed workspace updates

.helloagents/archive/2026-03/202603252220_connections-tree-toolbar-menu-polish/.status.json

@@ -0,0 +1 @@
+{"status":"completed","completed":4,"failed":0,"pending":0,"total":4,"done":4,"percent":100,"current":"已完成连接管理页树工具栏与更多菜单整理，并完成构建和启动验证","updated_at":"2026-03-25 22:29:00"}