Vim NORMAL-mode motion (h / ←) should return from an agent to the agent list in agent view

What

In agent view (claude agents), with vim editor mode enabled, NORMAL-mode motions should drive list navigation, not just the prompt text buffer. Specifically: pressing h (or ←) in NORMAL mode while attached to a specific agent should detach back to the agent list.

Current behavior

• Agent view uses arrow keys: ↑/↓ move rows, → attaches to a session, ← detaches back to the list, Esc exits.
• Vim mode is scoped to the prompt text buffer. NORMAL-mode h/j/k/l only move the text cursor; they don't navigate agent view.
• So a vim user attached to one agent can't use h to pop back to the list, even though it's the natural motion. They have to reach for ←.

Desired behavior

When vim mode is on and the prompt is empty (or in NORMAL mode), h and ← should both move focus from the current agent back to the agent list, i.e. behave like the existing detach action. Ideally j/k mirror ↓/↑ for row movement and l mirrors → for attach, so the whole agent view is vim-navigable.

Nice to have

Expose the agent-view keybinding actions (e.g. detach/attach/next/prev) in ~/.claude/keybindings.json so this is user-configurable even if it isn't the default.

Environment

• Claude Code 2.1.150
• macOS 26.5