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switch-thinking (pi extension)

Quickly switch thinking modes and cycle favorite modes.

Dependency

Requires status-bar to be installed and enabled for status indicator rendering.

Features

  • Ctrl+Alt+T opens a thinking-mode picker
    • Enter: apply highlighted mode and close
    • Space: toggle favorite on highlighted mode and keep picker open
    • ↑/↓ or j/k: navigate
    • Esc: close
  • Ctrl+T cycles through favorite thinking modes (canonical order: off → minimal → low → medium → high → xhigh)
  • Favorites are persisted globally at:
    • ~/.pi/agent/space.dector-switch-thinking.json

Availability rules:

  • Reasoning model: all modes available
  • Non-reasoning model: only off available

Important keybinding conflict (Ctrl+T)

Ctrl+T is built in as toggleThinking and is non-overridable while mapped.

To make extension cycling work on Ctrl+T, remap toggleThinking in: ~/.pi/agent/keybindings.json

Example:

{
  "toggleThinking": ["ctrl+shift+t"]
}

Install (standard pi extension layout)

Install as a source extension directory (recommended for pi extensions):

  • Global: copy this folder to ~/.pi/agent/extensions/switch-thinking/
  • Project-local: copy this folder to .pi/extensions/switch-thinking/

Required files in that folder:

  • index.ts
  • state.ts
  • ui.ts

Then:

  1. Run /reload
  2. (Required for cycling on Ctrl+T) remap toggleThinking as shown above
  3. Run /hotkeys to verify bindings

Development notes

  • No bundle step is required for normal pi usage.
  • pi loads TypeScript extensions directly.
  • Keep imports relative (./state, ./ui) so the copied folder works as-is.

pi core follow-up (suggested)

This extension still uses a UI-side refresh workaround to keep its emitted status content in sync when thinking level is changed via /settings.

Suggested core improvement in pi:

  • Emit an extension event when thinking level changes (for example: thinking_level_change with previous/new level).

Why this helps:

  • Native footer already reads live session state and updates immediately.
  • Extensions emitting status content still need a callback to react to out-of-band thinking-level changes.
  • A dedicated event would remove the need for input-timing workarounds.

Notes

  • Status rendering is emitted via status-bar events (status-bar:set / status-bar:clear with id: "switch-thinking") rather than direct ui.setStatus.
  • In non-UI modes, picker is skipped safely.
  • If favorites are empty or unavailable on current model, the extension shows a warning and does nothing.
  • Corrupt favorites JSON falls back to empty favorites.