Customizable keyboard shortcut for toggling plan mode

[karamanliev]

Often you realize mid-prompt that you need plan mode: type out a question, notice you should explore first, then have to delete everything, run /plan, and type it again. A keyboard shortcut fixes this: tap Ctrl+Shift+P at any point, no text lost.

Summary

• Registers ctrl+shift+p as default shortcut via pi.registerShortcut()
• Extracts toggle logic into shared togglePlanMode() function (command + shortcut reuse same code)
• Key is customizable in ~/.pi/agent/keybindings.json

Changes

• plan-mode.ts: extract togglePlanMode(), add pi.registerShortcut("ctrl+shift+p", ...)
• README.md: add Keyboard Shortcut section with customization example

[SolidusAbi]

I applied this behavior in the same way you did, as I also needed it. However, to my knowledge, keybindings are not directly usable in extensions since they are defined by an
interface. Have you been able to use it? Could you provide an example?

While keybindings through a custom JSON file could be worthwhile, I would not recommend creating a global configuration file for such a trivial parameter. Likewise, a CLI flag would be unnecessary.

Additionally, as a side note: ctrl+shift+p is a specific shortcut used by Ghostty (a popular terminal emulator) for its command palette. I'd suggest using a different shortcut instead. In my implementation, I used ctrl+k+p.

Anyway, I consider this shortcut a necessary addition. I hope @qmx considers this for merger!

[pkos98]

Thanks @karamanliev - works just fine!