Function hasVisibleUserContent

src/utils/sessionStorage.ts:2399–2424

* Checks if a user message has visible content (text or image, not just tool_result). * Tool results are displayed as part of collapsed groups, not as standalone messages. * Also excludes meta messages which are not shown to the user.

(message: TranscriptMessage)

 * Also excludes meta messages which are not shown to the user.
 */
function hasVisibleUserContent(message: TranscriptMessage): boolean {
  if (message.type !== 'user') return false

  // Meta messages are not shown to the user
  if (message.isMeta) return false

  const content = message.message?.content
  if (!content) return false

  // String content is always visible
  if (typeof content === 'string') {
    return content.trim().length > 0
  }

  // Array content: check for text or image blocks (not tool_result)
  if (Array.isArray(content)) {
    return content.some(
      block =>
        block.type === 'text' ||
        block.type === 'image' ||
        block.type === 'document',
    )
  }

  return false
}

/**
 * Checks if an assistant message has visible text content (not just tool_use blocks).