Function set

packages/tui/src/context/thinking.ts:43–46

(next: ThinkingMode | ((prev: ThinkingMode) => ThinkingMode))

  // Wrap it in a sane shape so consumers can just call `set(next)` or pass
  // an updater.
  const set = (next: ThinkingMode | ((prev: ThinkingMode) => ThinkingMode)) => {
    if (typeof next === "function") setStored(next as Setter<ThinkingMode>)
    else setStored(() => next)
  }

  // Preserve previous experience for users who had explicitly toggled the
  // legacy `thinking_visibility` boolean. First-time users (no legacy key)