[Feature]: Tab Groups in Sidebar

[TIPC1110]

Feature description

When I work on a project, I usually have 10–20 terminal tabs open at the same time. After a while the sidebar becomes difficult to navigate because every tab appears in a single list.

I'd like a way to group related tabs together.

Example:

Backend
├─ API
├─ Database
└─ Redis

Frontend
├─ Next.js
└─ Storybook

Infrastructure
├─ Docker
└─ Kubernetes

This would make large workspaces much easier to manage.

Implementation Suggestion

Implementation Suggestion

Add a collapsible group item to the sidebar.

Users can:

• Create a group
• Rename a group
• Drag tabs into a group
• Collapse or expand a group
• Move tabs between groups

The group structure should be saved with the workspace and restored when WaveTerm starts again.

Anything else?

A possible UI could look like:

▼ Backend
  API
  Database
  Redis

▼ Frontend
  Next.js
  Storybook

▶ Infrastructure

I often use WaveTerm as a workspace manager rather than just a terminal. Once a workspace contains many tabs, finding the right one becomes slower. Grouping tabs would keep related terminals together and make navigation easier.