Function replaceLifecycleItem

desktop/src/features/agents/ui/agentSessionTranscript.ts:445–486

(
  d: TranscriptDraft,
  id: string,
  renderClass: Extract<
    AgentActivityRenderClass,
    "status" | "permission" | "error"
  >,
  title: string,
  text: string,
  timestamp: string,
  ctx: TranscriptItemContext,
  acpSource?: string,
)

// appending. Used for coalescing fields (e.g. usage_update) where only the
// latest value is meaningful — repeated updates must not accumulate.
function replaceLifecycleItem(
  d: TranscriptDraft,
  id: string,
  renderClass: Extract<
    AgentActivityRenderClass,
    "status" | "permission" | "error"
  >,
  title: string,
  text: string,
  timestamp: string,
  ctx: TranscriptItemContext,
  acpSource?: string,
) {
  const existing = d.itemsById.get(id);
  if (existing?.type === "lifecycle") {
    replaceItem(d, id, {
      ...existing,
      renderClass,
      title,
      text,
      channelId: ctx.channelId,
      turnId: ctx.turnId ?? existing.turnId,
      sessionId: ctx.sessionId ?? existing.sessionId,
      acpSource: acpSource ?? existing.acpSource,
    });
    return;
  }

  sealOpenMessages(d);
  pushItem(d, {
    id,
    type: "lifecycle",
    renderClass,
    title,
    text,
    timestamp,
    channelId: ctx.channelId,
    turnId: ctx.turnId,
    sessionId: ctx.sessionId,
    acpSource,
  });
}

function upsertPlan(
  d: TranscriptDraft,