Function isShutdownRequest

src/utils/teammateMailbox.ts:868–880

(
  messageText: string,
)

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

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