fix: keep scene 8 transcript visible

web/apps/console/src/presentation/authoring/AuthoringConversation.tsx

@@ -10,6 +10,7 @@ type AuthoringConversationProps = {
   readonly activePhase: AuthoringPhaseId;
   readonly surface: "stage" | "dock";
   readonly requestOverride?: string | undefined;
+  readonly scrollMode?: "active" | "start" | undefined;
   readonly runAction?: { readonly label: string; readonly disabled: boolean; readonly run: () => void } | undefined;
 };
 
@@ -19,6 +20,7 @@ export const AuthoringConversation = ({
   activePhase,
   surface,
   requestOverride,
+  scrollMode,
   runAction,
 }: AuthoringConversationProps) => (
   <AssistantOperatorThread
@@ -26,6 +28,7 @@ export const AuthoringConversation = ({
     surface={surface}
     messages={projectPreparedAuthoringThread(throughPhase, requestOverride)}
     activeToolGroupId={authoringToolGroupId(activePhase)}
+    scrollMode={scrollMode}
     ariaLabel="prepared authoring conversation"
     runAction={runAction}
   />

web/apps/console/src/presentation/authoring/Scene8ChatEntry.test.tsx

@@ -45,6 +45,10 @@ describe("Scene8ChatEntry", () => {
     await user.click(screen.getByRole("button", { name: "Send" }));
     expect(screen.getByText(/let me inspect the available sources/i)).toBeInTheDocument();
     expect(screen.getByRole("button", { name: /discover.*4 tool calls/i })).toBeInTheDocument();
+    expect(screen.getByRole("region", { name: "authoring chat entry" })).toHaveAttribute(
+      "data-entry-phase",
+      "submitted",
+    );
     expect(screen.queryByRole("button", { name: /run prepared workflow/i })).not.toBeInTheDocument();
     expect(screen.getByRole("button", { name: "Send" })).toBeDisabled();
   });

web/apps/console/src/presentation/authoring/Scene8ChatEntry.tsx

@@ -24,7 +24,11 @@ export const Scene8ChatEntry = ({ state, dispatch }: Scene8ChatEntryProps) => {
   };
 
   return (
-    <section className="agent-handoff-scene__entry" aria-label="authoring chat entry">
+    <section
+      className="agent-handoff-scene__entry"
+      aria-label="authoring chat entry"
+      data-entry-phase={state.phase}
+    >
       <div className="agent-handoff-scene__intro">
         <span>Scene 8 · agent handoff</span>
         <h1>What should the workflow author prepare?</h1>
@@ -62,6 +66,7 @@ export const Scene8ChatEntry = ({ state, dispatch }: Scene8ChatEntryProps) => {
             throughPhase="discover"
             activePhase="discover"
             surface="stage"
+            scrollMode="start"
             requestOverride={state.request}
           />
         </div>