Function collectCandidatesFromMessage

src/utils/toolResultStorage.ts:557–573

* Extract candidate tool_result blocks from a single user message: blocks * that are non-empty, non-image, and not already compacted by tag (i.e. by * the per-tool limit, or an earlier iteration of this same query call). * Returns [] for messages with no eligible blocks.

(message: Message)

 * Returns [] for messages with no eligible blocks.
 */
function collectCandidatesFromMessage(message: Message): ToolResultCandidate[] {
  if (message.type !== 'user' || !Array.isArray(message.message.content)) {
    return []
  }
  return message.message.content.flatMap(block => {
    if (block.type !== 'tool_result' || !block.content) return []
    if (isContentAlreadyCompacted(block.content)) return []
    if (hasImageBlock(block.content)) return []
    return [
      {
        toolUseId: block.tool_use_id,
        content: block.content,
        size: contentSize(block.content),
      },
    ]
  })
}

/**
 * Extract candidate tool_result blocks grouped by API-level user message.