Function isCollapsibleToolResult

src/utils/collapseReadSearch.ts:460–476

* Type predicate: Check if a message is a tool result for collapsible tools. * Returns true if ALL tool results in the message are for tracked collapsible tools.

(
  msg: RenderableMessage,
  collapsibleToolUseIds: Set<string>,
)

 * Returns true if ALL tool results in the message are for tracked collapsible tools.
 */
function isCollapsibleToolResult(
  msg: RenderableMessage,
  collapsibleToolUseIds: Set<string>,
): msg is CollapsibleMessage {
  if (msg.type === 'user') {
    const toolResults = msg.message.content.filter(
      (c): c is { type: 'tool_result'; tool_use_id: string } =>
        c.type === 'tool_result',
    )
    // Only return true if there are tool results AND all of them are for collapsible tools
    return (
      toolResults.length > 0 &&
      toolResults.every(r => collapsibleToolUseIds.has(r.tool_use_id))
    )
  }
  return false
}

/**
 * Get all tool use IDs from a single message (handles grouped tool uses).