Function isTaskAssignment

src/utils/teammateMailbox.ts:965–977

(
  messageText: string,
)

 * Checks if a message text contains a task assignment
 */
export function isTaskAssignment(
  messageText: string,
): TaskAssignmentMessage | null {
  try {
    const parsed = jsonParse(messageText)
    if (parsed && parsed.type === 'task_assignment') {
      return parsed as TaskAssignmentMessage
    }
  } catch {
    // Not JSON or not a valid task assignment
  }
  return null
}

/**
 * Team permission update message sent from leader to teammates via mailbox