Keyboard navigation for projects/sessions sidebar (focus vs. activate, plus quick actions)

Summary

The left sidebar in the Claude Code desktop/web app lists projects and their sessions, but it's only navigable with the mouse. There are no keyboard shortcuts to move between projects or sessions, and ~/.claude/keybindings.json doesn't expose any actions for the sidebar (only tabs:*, footer:*, etc.).

Please add first-class keyboard navigation for the sidebar.

Requested behavior

Two distinct modes of navigation:

1. Activate — move keyboard focus to a session and switch the main pane to that conversation (the current click behavior).
2. Focus only — move a selection cursor through the sidebar without switching the active conversation. This lets the user line up a session and run a quick action against it without leaving the conversation they're currently in.

Quick actions on the focused (not necessarily active) session:

• Rename
• Archive
• Fork / duplicate
• Delete

These should be invokable by keyboard while the sidebar selection is on a given session.

Suggested actions to expose in keybindings.json

So users can rebind to taste:

• sidebar:focus — move keyboard focus into the sidebar
• sidebar:next / sidebar:previous — move selection between sessions
• sidebar:nextProject / sidebar:previousProject — jump between project groups
• sidebar:activate — open the focused session in the main pane (Enter)
• sidebar:rename
• sidebar:archive
• sidebar:fork
• sidebar:delete

Why

• Keyboard-driven workflows: power users running many parallel agent sessions shouldn't have to reach for the mouse to triage them.
• "Focus without activate" is the key ask — being able to rename/archive/delete an old session without losing context in the current conversation.
• Parity with how every other sidebar-having editor (VS Code, JetBrains, Finder column view) handles this.

Environment

• Claude Code desktop/web app (sidebar UI)
• macOS