Function loadFullLog

src/utils/sessionStorage.ts:2949–3056

(log: LogOption)

 * If the log is already full or loading fails, returns the original log.
 */
export async function loadFullLog(log: LogOption): Promise<LogOption> {
  // If already full, return as-is
  if (!isLiteLog(log)) {
    return log
  }

  // Use the fullPath from the index entry directly
  const sessionFile = log.fullPath
  if (!sessionFile) {
    return log
  }

  try {
    const {
      messages,
      summaries,
      customTitles,
      tags,
      agentNames,
      agentColors,
      agentSettings,
      prNumbers,
      prUrls,
      prRepositories,
      modes,
      worktreeStates,
      fileHistorySnapshots,
      attributionSnapshots,
      contentReplacements,
      contextCollapseCommits,
      contextCollapseSnapshot,
      leafUuids,
    } = await loadTranscriptFile(sessionFile)

    if (messages.size === 0) {
      return log
    }

    // Find the most recent user/assistant leaf message from the transcript
    const mostRecentLeaf = findLatestMessage(
      messages.values(),
      msg =>
        leafUuids.has(msg.uuid) &&
        (msg.type === 'user' || msg.type === 'assistant'),
    )
    if (!mostRecentLeaf) {
      return log
    }

    // Build the conversation chain from this leaf
    const transcript = buildConversationChain(messages, mostRecentLeaf)
    // Leaf's sessionId — forked sessions copy chain[0] from the source, but
    // metadata entries (custom-title etc.) are keyed by the current session.
    const sessionId = mostRecentLeaf.sessionId as UUID | undefined
    return {
      ...log,
      messages: removeExtraFields(transcript),
      firstPrompt: extractFirstPrompt(transcript),