pi 0.85.1 added a built-in /thinking command — extension's registerThinkingCommand now conflicts (startup warning)

What happens

On pi 0.85.1, every session start prints:

[Extension issues]
  npm:@companion-ai/feynman (user) extensions/research-tools.ts
    Extension command '/thinking' conflicts with built-in interactive command. Skipping in autocomplete.

Cause

pi 0.85.x added a built-in interactive /thinking command (view/set thinking level). Feynman 0.3.47 still registers its own /thinking via extensions/research-tools/thinking.ts → registerThinkingCommand(pi) (originally added per #196). pi resolves the collision by skipping the extension command in autocomplete, and prints the warning banner on each session start.

Impact

Cosmetic — both commands do the same thing, pi's built-in wins, no functionality is lost. But the startup warning shows up for every user on pi ≥ 0.85 running feynman 0.3.47.

Suggested fix

Drop the extension's /thinking registration in favor of the built-in one once the minimum supported pi version includes the built-in command (pi ≥ 0.85.1). That means:

• remove the registerThinkingCommand import and call in extensions/research-tools.ts
• delete extensions/research-tools/thinking.ts
• remove tests/thinking-command.test.ts

PR to follow.

Environment

• @companion-ai/feynman 0.3.47 (installed as a pi package)
• pi 0.85.1, Node v26.8.1, Linux (WSL2)