Fix savings chat autoscroll

src/components/chat/AgentChat.test.tsx

@@ -10,6 +10,7 @@ import {
   buildSourcesFromToolTrace,
   buildReasoningSteps,
   getToolTraceSummary,
+  scrollConversationToBottom,
 } from "./agentChatModel";
 
 const assistantMessage: AgentChatMessage = {
@@ -31,6 +32,17 @@ const assistantMessage: AgentChatMessage = {
 };
 
 describe("AgentChat phase 1 components", () => {
+  test("scrolls the conversation container directly to the bottom", () => {
+    const container = {
+      scrollTop: 0,
+      scrollHeight: 1200,
+    };
+
+    scrollConversationToBottom(container);
+
+    expect(container.scrollTop).toBe(1200);
+  });
+
   test("summarizes tool traces for compact agent transparency", () => {
     expect(getToolTraceSummary(undefined)).toBe("Keine Werkzeuge");
     expect(getToolTraceSummary([])).toBe("Keine Werkzeuge");