Function isLoggableMessage

src/utils/sessionStorage.ts:4351–4367

(m: Message)

// Exported so useLogMessages can sync-compute the last loggable uuid
// without awaiting recordTranscript's return value (race-free hint tracking).
export function isLoggableMessage(m: Message): boolean {
  if (m.type === 'progress') return false
  // IMPORTANT: We deliberately filter out most attachments for non-ants because
  // they have sensitive info for training that we don't want exposed to the public.
  // When enabled, we allow hook_additional_context through since it contains
  // user-configured hook output that is useful for session context on resume.
  if (m.type === 'attachment' && getUserType() !== 'ant') {
    if (
      m.attachment.type === 'hook_additional_context' &&
      isEnvTruthy(process.env.CLAUDE_CODE_SAVE_HOOK_ADDITIONAL_CONTEXT)
    ) {
      return true
    }
    return false
  }
  return true
}

function collectReplIds(messages: readonly Message[]): Set<string> {
  const ids = new Set<string>()