Feature Request: Allow remapping ESC keybinding

Problem

The ESC key triggers a rewind operation (ESC + ESC) in Claude Code CLI. This keybinding is hardcoded with no way to remap or disable it.

ESC is commonly used for:

• Push-to-talk (voice input / hands-free coding)
• Vim-style navigation
• General cancel/escape muscle memory in other tools

When using ESC for push-to-talk, accidentally double-tapping can trigger an unintended rewind.

Impact

• Cognitive load: Users must consciously avoid double-tapping a key they use reflexively
• Flow interruption: Switching push-to-talk to F1 or another key requires looking at keyboard, breaks hands-free workflow
• Accessibility: Voice input users rely on easy-to-reach keys like ESC for hands-free operation

Proposed Solution

Allow keybinding customization via:

• claude config set keybinding.rewind <key>
• settings.json configuration
• /terminal-setup command

ESC can remain the default, but users should be able to remap or disable it.

Environment

Claude Code CLI (terminal), Windows 11, but applies to all platforms