items to list the steps, each with a title and a description, numbered in order.status on an item to show whether the step is running, done, failed or stopped.collapsible and content on an item to fold its details, with defaultExpandedKeys choosing which start open.expandedKeys with onExpand to decide which steps are open from outside, like a button that opens the check step.destroyOnHidden to false on an item to keep its folded content in the page, so its state survives a collapse.line to dashed or dotted to change the line joining the steps, or false to hide it.icon to false on an item to drop its glyph, and pass classNames.itemContent to frame the folded steps in a panel.icon and a footer under its content, like a button that edits the plan the agent wrote.ThoughtChain in an item's content to break a step into smaller steps of its own, one level down.ThoughtChain.Item for one step on its own, with variant set to solid, outlined or text.status on ThoughtChain.Item to show a running, finished, failed or stopped step, in each of the three variants.icon to ThoughtChain.Item to show what the step does, like a search, an edit or a page being opened.onClick to ThoughtChain.Item to make the step a button, for example to open the file or page it worked on.blink on ThoughtChain.Item to run a shimmer across its text while the agent is still working on it.disabled on ThoughtChain.Item to gray the step out and stop it from responding to clicks.Bubble that lists the steps it took before the answer.