Function reconstructContentReplacementState

src/utils/toolResultStorage.ts:984–1014

(
  messages: Message[],
  records: ContentReplacementRecord[],
  inheritedReplacements?: ReadonlyMap<string, string>,
)

 *     resumes (parent IDs aren't in the subagent's messages).
 */
export function reconstructContentReplacementState(
  messages: Message[],
  records: ContentReplacementRecord[],
  inheritedReplacements?: ReadonlyMap<string, string>,
): ContentReplacementState {
  const state = createContentReplacementState()
  const candidateIds = new Set(
    collectCandidatesByMessage(messages)
      .flat()
      .map(c => c.toolUseId),
  )

  for (const id of candidateIds) {
    state.seenIds.add(id)
  }
  for (const r of records) {
    if (r.kind === 'tool-result' && candidateIds.has(r.toolUseId)) {
      state.replacements.set(r.toolUseId, r.replacement)
    }
  }
  if (inheritedReplacements) {
    for (const [id, replacement] of inheritedReplacements) {
      if (candidateIds.has(id) && !state.replacements.has(id)) {
        state.replacements.set(id, replacement)
      }
    }
  }
  evictOldestFromSet(state.seenIds, MAX_TRACKED_REPLACEMENT_IDS)
  evictOldestFromMap(state.replacements, MAX_TRACKED_REPLACEMENT_IDS)
  return state
}

/**
 * AgentTool-resume variant: encapsulates the feature-flag gate + parent