listTaskStories reads the task activity stream, including user comments and system stories.
automations/list-asana-stories.automation.ts
taskId is required. limit is 1–100 and defaults to 100; offset continues from pageInfo.nextOffset; optional account defaults to the project binding.
Returns Signal<{ stories: AsanaStory[]; pageInfo: { nextOffset?: string } }>; a story includes id, text and optional HTML, creator and timestamps, subtype, and edited/pinned state. Not every story is an editable comment.