[FEATURE]:group TUI /mcps by optional folder tree #44344

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

/mcps is a flat A–Z list. In my daily use case as example, i run many database MCPs across UAT / SIT / PROD for different microservices, and usually only enable the one i need. In a long list it is a bit hard to see which service and env is on.

Add an optional folder path on each MCP config, shown as a collapsible tree in TUI /mcps only (service --> env --> server),
e.g. folder "ServiceA/Asia/uat", "ServiceA/Asia/PROD". UI changes only, connect/tools unchanged.