[FEATURE] Direct Model Switching Keybindings

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Add keybinding actions to quickly switch between Claude models without opening the model picker UI.

Proposed Solution

Currently, the only model-selection keybinding available is chat:modelPicker (default: meta+p), which opens an interactive menu. Users must navigate and select from the menu each time they want to switch models.
Desired Behavior
Add built-in keybinding actions to directly switch to specific models in a single keypress:

• chat:switchToHaiku
• chat:switchToOpus
• chat:switchToSonnet
• (optionally: chat:switchToFable, chat:switchToClaude3, etc.)

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

Use Case
When working on different tasks, users frequently need to switch between models:

• Haiku for quick, lightweight tasks
• Opus for complex, reasoning-heavy work
• Sonnet for balanced tasks

Additional Context

Users could configure in ~/.claude/keybindings.json:

{
  "context": "Chat",
  "bindings": {
    "ctrl+alt+h": "chat:switchToHaiku",
    "ctrl+alt+o": "chat:switchToOpus",
    "ctrl+alt+s": "chat:switchToSonnet"
  }
}