Function getDisplayMessageFromCollapsed

src/utils/collapseReadSearch.ts:529–537

(
  message: CollapsedReadSearchGroup,
)

 * Returns a NormalizedAssistantMessage or NormalizedUserMessage (never GroupedToolUseMessage).
 */
export function getDisplayMessageFromCollapsed(
  message: CollapsedReadSearchGroup,
): Exclude<CollapsibleMessage, { type: 'grouped_tool_use' }> {
  const firstMsg = message.displayMessage
  if (firstMsg.type === 'grouped_tool_use') {
    return firstMsg.displayMessage
  }
  return firstMsg
}

/**
 * Count the number of tool uses in a message (handles grouped tool uses).