feat: anchor deliverable cards for scroll jumps

surfsense_web/features/chat-artifacts/ui/artifact-anchor.tsx

@@ -0,0 +1,20 @@
+import type { ToolCallMessagePartComponent, ToolCallMessagePartProps } from "@assistant-ui/react";
+import { ARTIFACT_ANCHOR_ATTR } from "../lib/scroll-to-artifact";
+
+/**
+ * Wrap a body tool component so its rendered card carries a DOM anchor keyed by
+ * tool call id. The artifacts sidebar uses it to scroll a deliverable back into
+ * view. The wrapper is layout-neutral — the card keeps its own margins.
+ */
+export function withArtifactAnchor(
+	Tool: ToolCallMessagePartComponent
+): ToolCallMessagePartComponent {
+	function AnchoredTool(props: ToolCallMessagePartProps) {
+		return (
+			<div {...{ [ARTIFACT_ANCHOR_ATTR]: props.toolCallId }} className="scroll-mt-4">
+				<Tool {...props} />
+			</div>
+		);
+	}
+	return AnchoredTool;
+}