feat: make scene 9 a split authoring workspace

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

@@ -62,16 +62,42 @@ describe("PreparedAuthoringLifecycleScene", () => {
     expect(screen.getByRole("region", { name: label })).toBeInTheDocument();
   });
 
-  it("keeps the same conversation as a synchronized bottom dock", () => {
+  it("keeps the assistant and dominant phase visual visible as stable siblings", () => {
     renderBeat("draft");
+
+    const workspace = screen.getByRole("region", { name: "prepared workflow authoring lifecycle" });
+    const assistant = screen.getByRole("complementary", { name: /prepared authoring assistant/i });
+    const visual = screen.getByRole("region", { name: "draft graph evidence" });
+
+    expect(workspace).toContainElement(assistant);
+    expect(workspace).toContainElement(visual);
+    expect(assistant).toHaveAttribute("data-phase", "draft");
+    expect(assistant).toHaveAttribute("data-surface", "prepared-replay");
+    expect(assistant.querySelector('[data-surface="stage"]')).toBeInTheDocument();
+    expect(workspace.querySelector(".prepared-lifecycle-scene__dock")).not.toBeInTheDocument();
+    expect(workspace.querySelector("[role='dialog']")).not.toBeInTheDocument();
+    expect(workspace.querySelector("[aria-label='authoring phase rail']"))
+      .toBeInTheDocument();
+    expect(visual).toHaveAttribute("data-presentation-surface", "editorial");
+  });
+
+  it("synchronizes the assistant phase, active group, rail, and visual", () => {
+    renderBeat("validate");
+
+    expect(screen.getByRole("complementary", { name: /prepared authoring assistant/i }))
+      .toHaveAttribute("data-phase", "validate");
+    expect(screen.getByRole("button", { name: /validate.*2 tool calls/i }))
+      .toHaveAttribute("aria-expanded", "true");
+    expect(screen.getByRole("button", { name: /draft.*3 tool calls/i }))
+      .toHaveAttribute("aria-expanded", "false");
+    expect(screen.getByLabelText("authoring phase rail").querySelector("[data-active='true']"))
+      .toHaveTextContent("Validate");
     const chat = screen.getByRole("log", { name: "prepared authoring conversation" });
-    expect(chat).toHaveAttribute("data-surface", "dock");
-    expect(screen.getByRole("region", { name: "draft graph evidence" })).toHaveAttribute(
+    expect(chat).toHaveAttribute("data-surface", "stage");
+    expect(screen.getByRole("region", { name: "validation repair evidence" })).toHaveAttribute(
       "data-presentation-surface",
       "editorial",
     );
-    expect(screen.getByRole("button", { name: /draft.*3 tool calls/i }))
-      .toHaveAttribute("aria-expanded", "true");
   });
 
   it("does not render the obsolete trace modal or receipt", () => {

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

@@ -1,6 +1,6 @@
 import { projectPreparedAuthoringPhase } from "./authoring-projection.js";
-import { AuthoringConversation } from "./AuthoringConversation.js";
 import { AuthoringPhaseVisual } from "./AuthoringPhaseVisual.js";
+import { PresentationAssistantPane } from "./PresentationAssistantPane.js";
 import type { AuthoringPhaseId } from "./authoring-recording.js";
 import type { SceneBeatDefinition, SceneDefinition } from "../storyboard.js";
 import { StageCaption } from "../StageCaption.js";
@@ -21,9 +21,8 @@ const phases: readonly { readonly id: AuthoringPhaseId; readonly label: string }
 /**
  * Scene 9 — Prepared workflow authoring lifecycle.
  *
- * Each beat shows a compact orientation rail and one dominant phase projection
- * sourced from the prepared authoring recording. The same Scene 8 conversation
- * remains below the canvas as a beat-synchronized assistant dock.
+ * Each beat shows a persistent prepared assistant beside one dominant phase
+ * projection sourced from the prepared authoring recording.
  */
 export const PreparedAuthoringLifecycleScene = ({ scene, beat }: PreparedAuthoringLifecycleSceneProps) => {
   // Storyboard beats normally match these IDs. Discovery is a safe projection
@@ -44,23 +43,19 @@ export const PreparedAuthoringLifecycleScene = ({ scene, beat }: PreparedAuthori
         data-support-surface="prepared-chat"
         data-presentation-surface="editorial"
       >
-        <ol className="prepared-lifecycle-scene__rail" aria-label="authoring phase rail">
-          {phases.map((phase) => (
-            <li key={phase.id} data-active={phase.id === beatId ? "true" : "false"}>
-              <strong>{phase.label}</strong>
-            </li>
-          ))}
-        </ol>
+        <PresentationAssistantPane phase={beatId} />
+        <div className="prepared-lifecycle-scene__presentation">
+          <ol className="prepared-lifecycle-scene__rail" aria-label="authoring phase rail">
+            {phases.map((phase) => (
+              <li key={phase.id} data-active={phase.id === beatId ? "true" : "false"}>
+                <strong>{phase.label}</strong>
+              </li>
+            ))}
+          </ol>
 
-        <article className="prepared-lifecycle-scene__projection" key={beatId}>
-          <AuthoringPhaseVisual projection={projection} />
-        </article>
-        <div className="prepared-lifecycle-scene__dock">
-          <AuthoringConversation
-            throughPhase={beatId}
-            activePhase={beatId}
-            surface="dock"
-          />
+          <article className="prepared-lifecycle-scene__projection" key={beatId}>
+            <AuthoringPhaseVisual projection={projection} />
+          </article>
         </div>
       </section>
     </>

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

@@ -38,7 +38,7 @@ export const PresentationAssistantPane = ({ phase }: PresentationAssistantPanePr
       <AuthoringConversation
         throughPhase={phase}
         activePhase={phase}
-        surface="dock"
+        surface="stage"
       />
     </div>
   </aside>

web/apps/console/src/presentation/presentation-css.test.ts

@@ -31,6 +31,20 @@ describe("presentation.css", () => {
     expect(boardBlock).toContain("flex-shrink: 0");
   });
 
+  it("keeps Scene 9 as a bounded adaptive split without a lower dock row", () => {
+    const sceneBlock = css.match(
+      /^\.prepared-lifecycle-scene\s*\{(?<body>[\s\S]*?)\n\}/m,
+    )?.groups?.body;
+
+    expect(sceneBlock).toContain("grid-template-columns:");
+    expect(sceneBlock).toMatch(/minmax\(15rem, 0\.35fr\).*minmax\(0, 1\.65fr\)/);
+    expect(sceneBlock).toContain("min-height: 0");
+    expect(sceneBlock).toContain("overflow: hidden");
+    expect(sceneBlock).not.toContain("grid-template-rows:");
+    expect(css).not.toContain(".prepared-lifecycle-scene__dock");
+    expect(css).not.toMatch(/prepared-lifecycle-scene__dock[\s\S]*position:\s*(absolute|fixed)/);
+  });
+
   it("keeps evidence inside a substrate stack from wide desktop through the 1080px breakpoint", () => {
     expect(css).toMatch(/\.conclusion-map__flow\s*\{\s*display: grid;\s*grid-template-columns: repeat\(3, minmax\(0, 1fr\)\);/);
     expect(css).toMatch(/\.conclusion-map__flow-unit--substrate-stack\s*\{[\s\S]*?grid-template-rows: auto auto;/);

web/apps/console/src/presentation/presentation.css

@@ -3186,19 +3186,24 @@
   color: var(--authoring-paper);
 }
 
-/*
-  Scene 9 — Prepared Workflow Authoring Lifecycle.
-  Compact orientation rail plus dominant phase projection.
-*/
+/* Scene 9 — persistent assistant beside the dominant phase projection. */
 .prepared-lifecycle-scene {
   display: grid;
-  grid-template-rows: auto minmax(0, 1fr) 8.5rem;
+  grid-template-columns: minmax(15rem, 0.35fr) minmax(0, 1.65fr);
   gap: 0.55rem;
   min-height: 0;
   height: 100%;
   overflow: hidden;
 }
 
+.prepared-lifecycle-scene__presentation {
+  display: grid;
+  grid-template-rows: auto minmax(0, 1fr);
+  min-width: 0;
+  min-height: 0;
+  overflow: hidden;
+}
+
 .prepared-lifecycle-scene__rail {
   display: flex;
   gap: 0.35rem;
@@ -3251,11 +3256,6 @@
   margin: 0;
 }
 
-.prepared-lifecycle-scene__dock {
-  min-height: 0;
-  overflow: hidden;
-}
-
 .presentation-assistant-pane {
   display: flex;
   min-width: 0;
@@ -3313,8 +3313,8 @@
   --authoring-ink: var(--color-editorial-ink, oklch(0.19 0.015 65));
   --authoring-muted: var(--color-editorial-muted, oklch(0.48 0.025 65));
   --authoring-rule: color-mix(in oklch, var(--authoring-muted) 32%, transparent);
-  grid-template-rows: auto minmax(0, 1fr) minmax(9rem, 34%);
-  gap: 0;
+  grid-template-columns: minmax(15rem, 0.35fr) minmax(0, 1.65fr);
+  gap: 0.8rem;
   background: var(--authoring-paper);
   color: var(--authoring-ink);
 }
@@ -3349,49 +3349,48 @@
   overflow: auto;
 }
 
-.prepared-lifecycle-scene[data-presentation-surface="editorial"] .prepared-lifecycle-scene__dock {
-  padding-top: 0.55rem;
-  background: var(--authoring-paper);
+.prepared-lifecycle-scene[data-presentation-surface="editorial"] .presentation-assistant-pane {
+  background: color-mix(in oklch, var(--authoring-paper) 92%, var(--authoring-muted));
+  border-color: var(--authoring-rule);
 }
 
-.prepared-lifecycle-scene[data-presentation-surface="editorial"] .assistant-operator-thread[data-surface="dock"] {
-  border-top: 0;
+.prepared-lifecycle-scene[data-presentation-surface="editorial"] .presentation-assistant-pane .assistant-operator-thread {
   color: var(--authoring-ink);
 }
 
-.prepared-lifecycle-scene[data-presentation-surface="editorial"] .assistant-operator-thread[data-surface="dock"] .assistant-thread {
+.prepared-lifecycle-scene[data-presentation-surface="editorial"] .presentation-assistant-pane .assistant-thread {
   border: 0;
   border-radius: 0;
-  background: var(--authoring-paper);
+  background: transparent;
 }
 
-.prepared-lifecycle-scene[data-presentation-surface="editorial"] .assistant-message__user-bubble {
+.prepared-lifecycle-scene[data-presentation-surface="editorial"] .presentation-assistant-pane .assistant-message__user-bubble {
   border: 1px solid var(--authoring-rule);
   border-radius: 0.2rem;
   background: color-mix(in oklch, var(--authoring-paper) 86%, var(--accent-cyan));
   color: var(--authoring-ink);
 }
 
-.prepared-lifecycle-scene[data-presentation-surface="editorial"] .assistant-message[data-role="assistant"] {
+.prepared-lifecycle-scene[data-presentation-surface="editorial"] .presentation-assistant-pane .assistant-message[data-role="assistant"] {
   color: var(--authoring-ink);
 }
 
-.prepared-lifecycle-scene[data-presentation-surface="editorial"] .assistant-operator-thread [data-slot="tool-group-root"],
-.prepared-lifecycle-scene[data-presentation-surface="editorial"] .assistant-operator-thread [data-slot="tool-fallback-root"] {
+.prepared-lifecycle-scene[data-presentation-surface="editorial"] .presentation-assistant-pane .assistant-operator-thread [data-slot="tool-group-root"],
+.prepared-lifecycle-scene[data-presentation-surface="editorial"] .presentation-assistant-pane .assistant-operator-thread [data-slot="tool-fallback-root"] {
   border-color: var(--authoring-rule);
   border-radius: 0.2rem;
   background: transparent;
   color: var(--authoring-ink);
 }
 
-.prepared-lifecycle-scene[data-presentation-surface="editorial"] .assistant-operator-thread [data-slot="tool-group-trigger"],
-.prepared-lifecycle-scene[data-presentation-surface="editorial"] .assistant-operator-thread [data-slot="tool-fallback-trigger"] {
+.prepared-lifecycle-scene[data-presentation-surface="editorial"] .presentation-assistant-pane .assistant-operator-thread [data-slot="tool-group-trigger"],
+.prepared-lifecycle-scene[data-presentation-surface="editorial"] .presentation-assistant-pane .assistant-operator-thread [data-slot="tool-fallback-trigger"] {
   color: var(--authoring-muted);
 }
 
-.prepared-lifecycle-scene[data-presentation-surface="editorial"] .assistant-operator-thread [data-slot="tool-fallback-trigger-icon"],
-.prepared-lifecycle-scene[data-presentation-surface="editorial"] .assistant-operator-thread [data-slot="tool-fallback-trigger-chevron"],
-.prepared-lifecycle-scene[data-presentation-surface="editorial"] .assistant-operator-thread [data-slot="tool-group-trigger-chevron"] {
+.prepared-lifecycle-scene[data-presentation-surface="editorial"] .presentation-assistant-pane .assistant-operator-thread [data-slot="tool-fallback-trigger-icon"],
+.prepared-lifecycle-scene[data-presentation-surface="editorial"] .presentation-assistant-pane .assistant-operator-thread [data-slot="tool-fallback-trigger-chevron"],
+.prepared-lifecycle-scene[data-presentation-surface="editorial"] .presentation-assistant-pane .assistant-operator-thread [data-slot="tool-group-trigger-chevron"] {
   color: var(--authoring-accent);
 }