Function getVerifyPlanReminderTurnCount

src/utils/attachments.ts:3872–3889

(messages: Message[])

 * interval fires every ~10 tool calls instead of ~10 human turns.
 */
export function getVerifyPlanReminderTurnCount(messages: Message[]): number {
  let turnCount = 0
  for (let i = messages.length - 1; i >= 0; i--) {
    const message = messages[i]
    if (message && isHumanTurn(message)) {
      turnCount++
    }
    // Stop counting at plan_mode_exit attachment (marks when implementation started)
    if (
      message?.type === 'attachment' &&
      message.attachment.type === 'plan_mode_exit'
    ) {
      return turnCount
    }
  }
  // No plan_mode_exit found
  return 0
}

/**
 * Get verify plan reminder attachment if the model hasn't called VerifyPlanExecution yet.