The sidebar pins navigation above a scrollable session list. In multi-agent setups every agent appears as a collapsible top-level section; expanding an agent browses its sessions without navigating away from the open chat, and collapsed agents show an unread indicator. Within an agent the list splits into **Pinned**, one built-in section per connected channel (Telegram, Slack, WhatsApp, ...), a built-in **Work** section for sessions bound to a managed worktree or exec node (rows show a `repo ⎇ branch` line plus the node host), custom groups (the session `category`), and **Chats** for the rest. Channel and Work sections classify rows automatically; assigning a session to a custom group always wins. Opening a session moves the selection highlight without reordering the rows. Sessions with new activity since they were last read show an unread dot, and opening one marks it read. Each session row has a context menu (kebab button or right-click) with Pin/Unpin, Mark as unread/read, Rename, Fork, Move to group (including New group and Remove from group), Archive, and Delete; touch layouts keep the direct pin and menu controls visible. Cmd/Ctrl-click toggles rows into a multi-select and Shift-click extends it across the visible order; opening the menu on a selected row then offers batch actions (Mark N as unread/read, Move N to group, Archive N, Delete N) that apply to every selected session, with a single confirmation for batch delete. Drag a session onto **Pinned** to pin it, or onto a custom group or **Chats** to move it. Custom group headers can be collapsed, expanded, or dragged to reorder them; group names and their order live in the gateway (`sessions.groups.*`), so they follow you across browsers, while the collapsed state stays in the browser profile. Group headers also have a menu (kebab button or right-click) with Rename group, New group, and Delete group; renaming or deleting a group updates every member session server-side, including archived ones, and deleting a group keeps its sessions and moves them back to Chats. The single **+** in the session-list header opens the New session page (see below). The sort control also has a Group by toggle: Grouped (default) or None for one flat list (Pinned stays separate); the choice is stored in the current browser profile. **Usage**, **Automations**, and **Plugins** are pinned by default; the **More** row opens a menu with every other destination, including plugin-provided tabs. Select **Edit pinned items** in that menu, or right-click the navigation area, to pin or unpin destinations and restore the defaults. The pinned set is stored in the current browser profile and survives reloads.

- The sidebar lists every loaded active session by agent section and pinned/channel/work/custom/Chats buckets with a single New Session action that opens the draft dialog. Opening a visible row moves only the highlight. Sessions can be dropped onto Pinned to pin them, or onto a custom group or Chats to move them; custom groups are collapsible and drag-reorderable, group names and order sync through the gateway, and collapsed state stays in the browser. A new dashboard session asynchronously gets a concise generated title from its first non-command message; explicit names are never replaced. Set `agents.defaults.utilityModel` (or `agents.list[].utilityModel`) to route this separate model call to a lower-cost model. Expanding another agent section browses that agent's sessions without leaving the open chat.