Function isShutdownRejected

src/utils/teammateMailbox.ts:919–931

(
  messageText: string,
)

 * Checks if a message text contains a shutdown rejected message
 */
export function isShutdownRejected(
  messageText: string,
): ShutdownRejectedMessage | null {
  try {
    const result = ShutdownRejectedMessageSchema().safeParse(
      jsonParse(messageText),
    )
    if (result.success) return result.data
  } catch {
    // Not JSON
  }
  return null
}

/**
 * Checks if a message text contains a plan approval response