Support Session Folders Within a Workspace

[nancheal]

Feature Request

Allow users to create custom folders to organize sessions within the same workspace.

Problem

A workspace can accumulate many sessions over time, making it difficult to find and manage conversations.

Currently, sessions cannot be organized into custom groups within a workspace.

Proposed Solution

Support session folders in the workspace sidebar, for example:

My Workspace
├── Feature Development
│   ├── Feature A
│   └── Feature B
├── Bug Fixes
│   ├── Bug A
│   └── Bug B
└── Ungrouped
    └── New Session

Expected Features

• Create, rename, and delete folders.
• Move sessions between folders via drag-and-drop or context menu.
• Expand and collapse folders.
• Persist folder organization across restarts.
• Deleting a folder should not delete its sessions.

Folders should only affect session organization, without changing the workspace, working directory, or session history.

This would make managing large numbers of sessions much easier without requiring multiple workspaces.