diff --git a/packages/studio/src/components/StudioHeader.embed.dom.test.tsx b/packages/studio/src/components/StudioHeader.embed.dom.test.tsx
deleted file mode 100644
index c6c30e47468..00000000000
--- a/packages/studio/src/components/StudioHeader.embed.dom.test.tsx
+++ /dev/null
@@ -1,79 +0,0 @@
-// @vitest-environment happy-dom
-
-/** Embedded in promptwise: no header; the Timeline tab's toolbar drives Inspector and Export by message. */
-import React, { act } from "react";
-import { createRoot } from "react-dom/client";
-import { expect, it, vi } from "vitest";
-
-(globalThis as unknown as { IS_REACT_ACT_ENVIRONMENT: boolean }).IS_REACT_ACT_ENVIRONMENT = true;
-
-const layout = { rightCollapsed: true, setRightCollapsed: vi.fn(), setRightPanelTab: vi.fn() };
-
-vi.mock("../promptwise/embed", () => ({ embeddedInPromptwise: true }));
-vi.mock("../contexts/StudioContext", () => ({
-  useStudioShellContext: () => ({
-    projectId: "773d81ab-4ac0-4f9d-acd7-4cd8838312dd",
-    renderQueue: { isRendering: false, ffmpegMissing: false },
-  }),
-}));
-vi.mock("../contexts/PanelLayoutContext", () => ({ usePanelLayoutContext: () => layout }));
-vi.mock("../utils/studioTelemetry", () => ({ trackStudioEvent: vi.fn() }));
-
-const { StudioHeader } = await import("./StudioHeader");
-
-function command(name: string) {
-  act(() => {
-    window.dispatchEvent(
-      new MessageEvent("message", {
-        data: { type: "promptwise:command", command: name },
-        source: window.parent,
-      }),
-    );
-  });
-}
-
-it("draws no header, runs the toolbar's presses and reports their state", () => {
-  const posted: unknown[] = [];
-  const postMessage = vi.spyOn(window.parent, "postMessage").mockImplementation((message) => {
-    posted.push(message);
-  });
-  const onExport = vi.fn();
-  const host = document.createElement("div");
-  document.body.append(host);
-  const root = createRoot(host);
-  act(() =>
-    root.render(
-      <StudioHeader
-        captureFrameHref="blob:frame"
-        captureFrameFilename="frame.png"
-        handleCaptureFrameClick={vi.fn()}
-        refreshCaptureFrameTime={vi.fn()}
-        inspectorButtonActive={false}
-        inspectorPanelActive={false}
-        onExport={onExport}
-      />,
-    ),
-  );
-
-  expect(host.innerHTML).toBe("");
-  expect(posted).toEqual([{ type: "promptwise:state", inspectorOpen: false, rendering: false }]);
-
-  command("inspector");
-  expect(layout.setRightPanelTab).toHaveBeenLastCalledWith("design");
-  expect(layout.setRightCollapsed).toHaveBeenLastCalledWith(false);
-
-  command("export");
-  expect(layout.setRightPanelTab).toHaveBeenLastCalledWith("renders");
-  expect(onExport).toHaveBeenCalledOnce();
-
-  // Only the parent page may drive Studio, and only with the commands it knows.
-  window.dispatchEvent(
-    new MessageEvent("message", { data: { type: "promptwise:command", command: "export" } }),
-  );
-  command("delete-everything");
-  expect(onExport).toHaveBeenCalledOnce();
-
-  act(() => root.unmount());
-  host.remove();
-  postMessage.mockRestore();
-});
diff --git a/packages/studio/src/components/StudioHeader.tsx b/packages/studio/src/components/StudioHeader.tsx
index 4347e015756..87a3a019592 100644
--- a/packages/studio/src/components/StudioHeader.tsx
+++ b/packages/studio/src/components/StudioHeader.tsx
@@ -7,8 +7,6 @@ import { Button, cn, Tooltip } from "./ui";
 import { ButtonGroup, ButtonGroupItem } from "../boardui/components/base/buttons/button-group";
 import { Dock } from "./dock/Dock";
 import { PromptwiseMark } from "../promptwise/PromptwiseMark";
-import { embeddedInPromptwise } from "../promptwise/embed";
-import { usePromptwiseToolbar } from "../promptwise/usePromptwiseToolbar";
 import { ShowThemeToggle, ThemeToggle } from "./ThemeToggle";
 
 interface StudioHeaderProps {
@@ -57,39 +55,6 @@ export const StudioHeader = memo(function StudioHeader({
   const isRendering = renderQueue.isRendering;
   const ffmpegMissing = renderQueue.ffmpegMissing;
 
-  const toggleInspector = () => {
-    if (shouldOpenInspector(rightCollapsed, inspectorPanelActive)) {
-      trackStudioEvent("panel_toggle", { panel: "inspector", collapsed: false });
-      setRightPanelTab("design");
-      setRightCollapsed(false);
-      return;
-    }
-    trackStudioEvent("panel_toggle", { panel: "inspector", collapsed: true });
-    // Keep the current selection when collapsing the Inspector — closing
-    // the panel shouldn't deselect the element.
-    setRightCollapsed(true);
-  };
-
-  const exportVideo = () => {
-    if (isRendering) return;
-    setRightPanelTab("renders");
-    setRightCollapsed(false);
-    // Without an encoder this render cannot finish, so the click
-    // delivers the user to the prompt that fixes it instead of
-    // queueing a job that exists only to fail. Disabling the button
-    // would leave them staring at a dead control with no route to
-    // the explanation.
-    if (ffmpegMissing) return;
-    onExport?.();
-  };
-
-  usePromptwiseToolbar(
-    { inspectorOpen: inspectorButtonActive, rendering: isRendering },
-    { inspector: toggleInspector, export: exportVideo },
-  );
-  // promptwise's Timeline tab has its own toolbar and tab name, so a second header would only repeat them.
-  if (embeddedInPromptwise) return null;
-
   return (
     <div className="flex h-12 shrink-0 items-center justify-between border-b border-border-button-default bg-background-primary-default px-3">
       <div className="flex items-center gap-3">
@@ -139,7 +104,18 @@ export const StudioHeader = memo(function StudioHeader({
               aria-pressed={inspectorButtonActive}
               selected={inspectorButtonActive}
               leadingIcon={RiLayoutRightLine}
-              onClick={toggleInspector}
+              onClick={() => {
+                if (shouldOpenInspector(rightCollapsed, inspectorPanelActive)) {
+                  trackStudioEvent("panel_toggle", { panel: "inspector", collapsed: false });
+                  setRightPanelTab("design");
+                  setRightCollapsed(false);
+                  return;
+                }
+                trackStudioEvent("panel_toggle", { panel: "inspector", collapsed: true });
+                // Keep the current selection when collapsing the Inspector — closing
+                // the panel shouldn't deselect the element.
+                setRightCollapsed(true);
+              }}
             >
               Inspector
             </ButtonGroupItem>
@@ -161,7 +137,18 @@ export const StudioHeader = memo(function StudioHeader({
             variant="primary"
             data-testid="header-export"
             disabled={isRendering}
-            onClick={exportVideo}
+            onClick={() => {
+              if (isRendering) return;
+              setRightPanelTab("renders");
+              setRightCollapsed(false);
+              // Without an encoder this render cannot finish, so the click
+              // delivers the user to the prompt that fixes it instead of
+              // queueing a job that exists only to fail. Disabling the button
+              // would leave them staring at a dead control with no route to
+              // the explanation.
+              if (ffmpegMissing) return;
+              onExport?.();
+            }}
           >
             {isRendering ? "Rendering…" : "Export"}
           </Button>
diff --git a/packages/studio/src/components/dock/dockLayout.test.ts b/packages/studio/src/components/dock/dockLayout.test.ts
index 40c3a1271c2..bddf62e8da8 100644
--- a/packages/studio/src/components/dock/dockLayout.test.ts
+++ b/packages/studio/src/components/dock/dockLayout.test.ts
@@ -132,40 +132,3 @@ describe("applySideMinimums", () => {
     expect(timeline.group.minimumWidth).toBe(120);
   });
 });
-
-describe("buildEditLayout on a narrow dock", () => {
-  let api: DockviewApi;
-  beforeEach(() => {
-    ({ api } = mountBareDockview());
-  });
-  afterEach(() => {
-    api.dispose();
-    document.body.innerHTML = "";
-  });
-
-  it("puts the preview over the timeline and one hidden side group beside it, as in promptwise's tab", () => {
-    api.layout(640, 820);
-    buildEditLayout(api, 640);
-    const side = api.getPanel("design")!.group;
-    expect(side.panels.map((panel) => panel.id)).toEqual([
-      "design",
-      "layers",
-      "renders",
-      "compositions",
-      "assets",
-    ]);
-    expect(side.api.isVisible).toBe(false);
-    expect(api.getPanel("preview")!.group.api.isVisible).toBe(true);
-    expect(api.getPanel("preview")!.group.width).toBe(640);
-    expect(api.getPanel("timeline")!.group.width).toBe(640);
-    expect(api.getPanel("timeline")!.group.height).toBe(260);
-    expect(api.getPanel("code")).toBeUndefined();
-  });
-
-  it("keeps the three columns on a wide one", () => {
-    api.layout(1200, 700);
-    buildEditLayout(api, 1200);
-    expect(api.getPanel("compositions")!.group).not.toBe(api.getPanel("design")!.group);
-    expect(api.getPanel("design")!.group.api.isVisible).toBe(true);
-  });
-});
diff --git a/packages/studio/src/components/dock/dockLayout.ts b/packages/studio/src/components/dock/dockLayout.ts
index acd9f8c1a35..94886d93aea 100644
--- a/packages/studio/src/components/dock/dockLayout.ts
+++ b/packages/studio/src/components/dock/dockLayout.ts
@@ -10,11 +10,6 @@ const MIN_SIDE_W_FLOOR = 120;
 const DEFAULT_TIMELINE_H = 360;
 const DEFAULT_LEFT = ["compositions", "assets", "code", "catalog"] as const;
 const DEFAULT_RIGHT = ["design", "layers", "renders", "variables", "motionBlur"] as const;
-/** Below this dock width (promptwise's Timeline tab beside its chat) two side columns would crush the preview. */
-const COMPACT_DOCK_W = 1000;
-const COMPACT_SIDE = ["design", "layers", "renders", "compositions", "assets"] as const;
-/** Room for three tracks under the toolbar and ruler; the preview gets the rest. */
-const COMPACT_TIMELINE_H = 260;
 
 /** Preferred side widths; when they overflow the preview's floor the right yields first, then the left. */
 export function defaultSideWidths(viewportWidth: number) {
@@ -104,20 +99,12 @@ function addSideColumn(
   return first;
 }
 
-/**
- * The default Edit layout: [library | preview | inspector] over a full-width timeline, or on a narrow
- * dock the preview over the timeline with one side group beside the preview, shown when asked for
- * (Inspector, a selection) since it would leave the preview too little room.
- */
+/** The default Edit layout: [library | preview | inspector] over a full-width timeline. */
 export function buildEditLayout(
   api: DockviewApi,
   viewportWidth: number,
   panels: readonly PanelId[] = PANEL_IDS,
 ) {
-  if (viewportWidth < COMPACT_DOCK_W) {
-    buildCompactLayout(api, viewportWidth, panels);
-    return;
-  }
   api.clear();
   const widths = defaultSideWidths(viewportWidth);
   addRegisteredPanel(api, "preview");
@@ -129,15 +116,3 @@ export function buildEditLayout(
   if (right) api.getPanel(right)?.group.api.setSize({ width: widths.right });
   api.getPanel("timeline")?.group.api.setSize({ height: DEFAULT_TIMELINE_H });
 }
-
-function buildCompactLayout(api: DockviewApi, viewportWidth: number, panels: readonly PanelId[]) {
-  api.clear();
-  addRegisteredPanel(api, "preview");
-  addRegisteredPanel(api, "timeline", { referencePanel: "preview", direction: "below" });
-  const side = addSideColumn(api, COMPACT_SIDE, panels, "right");
-  applySideMinimums(api, viewportWidth);
-  api.getPanel("timeline")?.group.api.setSize({ height: COMPACT_TIMELINE_H });
-  const group = side ? api.getPanel(side)?.group : undefined;
-  group?.api.setSize({ width: Math.max(MIN_SIDE_W, defaultSideWidths(viewportWidth).right) });
-  group?.api.setVisible(false);
-}
diff --git a/packages/studio/src/components/editor/PropertyPanelEmptyState.embed.dom.test.tsx b/packages/studio/src/components/editor/PropertyPanelEmptyState.embed.dom.test.tsx
deleted file mode 100644
index 2b21a6f6328..00000000000
--- a/packages/studio/src/components/editor/PropertyPanelEmptyState.embed.dom.test.tsx
+++ /dev/null
@@ -1,37 +0,0 @@
-// @vitest-environment happy-dom
-
-/** In promptwise most changes go through the agent, so its button leads the empty Design panel. */
-import React, { act } from "react";
-import { createRoot } from "react-dom/client";
-import { expect, it, vi } from "vitest";
-
-(globalThis as unknown as { IS_REACT_ACT_ENVIRONMENT: boolean }).IS_REACT_ACT_ENVIRONMENT = true;
-
-vi.mock("../../promptwise/embed", async (original) => ({
-  ...(await original<typeof import("../../promptwise/embed")>()),
-  embeddedInPromptwise: true,
-}));
-
-const { PropertyPanelEmptyState } = await import("./PropertyPanelEmptyState");
-
-it("puts the agent first, as the panel's one primary button, and asks promptwise to open its chat", () => {
-  const posted: unknown[] = [];
-  const postMessage = vi.spyOn(window.parent, "postMessage").mockImplementation((message) => {
-    posted.push(message);
-  });
-  const host = document.createElement("div");
-  document.body.append(host);
-  const root = createRoot(host);
-  act(() => root.render(<PropertyPanelEmptyState flat multiSelectCount={0} />));
-
-  const text = host.textContent ?? "";
-  expect(text.indexOf("Ask the agent")).toBeLessThan(text.indexOf("Record a gesture"));
-  const agent = host.querySelector("button")!;
-  expect(agent.textContent).toContain("Ask the agent");
-  act(() => agent.click());
-  expect(posted).toEqual([{ type: "promptwise:ask-agent" }]);
-
-  act(() => root.unmount());
-  host.remove();
-  postMessage.mockRestore();
-});
diff --git a/packages/studio/src/components/editor/PropertyPanelEmptyState.test.tsx b/packages/studio/src/components/editor/PropertyPanelEmptyState.test.tsx
index 1578a77bb71..2848c1ee0e3 100644
--- a/packages/studio/src/components/editor/PropertyPanelEmptyState.test.tsx
+++ b/packages/studio/src/components/editor/PropertyPanelEmptyState.test.tsx
@@ -28,7 +28,7 @@ describe("PropertyPanelEmptyState — flat empty", () => {
     expect(host.textContent).toContain("Nothing selected");
     expect(host.textContent).toContain("Record a gesture");
     // The agent chip only shows inside promptwise, whose chat it opens.
-    expect(host.textContent).not.toContain("Ask the agent");
+    expect(host.textContent).not.toContain("Describe a change to the agent");
     act(() => root.unmount());
   });
 });
diff --git a/packages/studio/src/components/editor/PropertyPanelEmptyState.tsx b/packages/studio/src/components/editor/PropertyPanelEmptyState.tsx
index 8385c190baa..067d9068210 100644
--- a/packages/studio/src/components/editor/PropertyPanelEmptyState.tsx
+++ b/packages/studio/src/components/editor/PropertyPanelEmptyState.tsx
@@ -3,7 +3,6 @@ import type { DomEditSelection } from "./domEditingTypes";
 import { canHideSelections } from "../../utils/timelineInspector";
 import { useTrackDesignInput } from "../../contexts/DesignPanelInputContext";
 import { askPromptwiseAgent, embeddedInPromptwise } from "../../promptwise/embed";
-import { Button } from "../ui";
 
 function FlatEmptyState() {
   return (
@@ -25,17 +24,6 @@ function FlatEmptyState() {
         Click any element on the canvas to edit it, or drag to select several.
       </div>
       <div className="mt-2 flex w-full flex-col gap-1.5">
-        {/* In promptwise the agent is the way most changes are made, so it comes first. */}
-        {embeddedInPromptwise && (
-          <Button
-            variant="primary"
-            onClick={askPromptwiseAgent}
-            icon={<span aria-hidden>✦</span>}
-            title="Describe a change to the agent"
-          >
-            Ask the agent
-          </Button>
-        )}
         <span className="flex items-center justify-between rounded-lg border border-panel-border bg-panel-bg px-3 py-2">
           <span className="flex items-center gap-2 text-caption-2-regular text-panel-text-2">
             <span className="text-danger-ink">●</span>
@@ -45,6 +33,16 @@ function FlatEmptyState() {
             R
           </span>
         </span>
+        {embeddedInPromptwise && (
+          <button
+            type="button"
+            onClick={askPromptwiseAgent}
+            className="flex items-center gap-2 rounded-lg border border-panel-border bg-panel-bg px-3 py-2 text-caption-2-regular text-panel-text-2 hover:bg-hover"
+          >
+            <span className="text-accent-ink">✦</span>
+            Describe a change to the agent
+          </button>
+        )}
       </div>
     </div>
   );
diff --git a/packages/studio/src/components/editor/SnapToolbar.tsx b/packages/studio/src/components/editor/SnapToolbar.tsx
index 63637d484b5..8d5c72a2d55 100644
--- a/packages/studio/src/components/editor/SnapToolbar.tsx
+++ b/packages/studio/src/components/editor/SnapToolbar.tsx
@@ -5,10 +5,6 @@ import { usePlayerStore } from "../../player/store/playerStore";
 import { usePreviewOverlayContext } from "./PreviewOverlayProvider";
 import { ownsPlainKeys } from "../../utils/typingTarget";
 
-/** A preview overlay button that's off: BoardUI's light surface with a hairline, readable over any frame. */
-const overlayButtonOff =
-  "bg-background-primary-default/90 text-foreground-icon-secondary shadow-xs ring-1 ring-border-button-default hover:bg-background-primary-hover hover:text-foreground-icon-primary";
-
 // fallow-ignore-next-line complexity
 export const SnapToolbar = memo(function SnapToolbar() {
   const [gridPopoverOpen, setGridPopoverOpen] = useState(false);
@@ -91,7 +87,9 @@ export const SnapToolbar = memo(function SnapToolbar() {
         <button
           type="button"
           className={`rounded-md p-1.5 transition-colors active:scale-[0.95] ${
-            motionPathArmed ? "bg-studio-accent/20 text-accent-ink" : overlayButtonOff
+            motionPathArmed
+              ? "bg-studio-accent/20 text-accent-ink"
+              : "bg-black/40 text-white/60 hover:bg-black/60 hover:text-white/80"
           }`}
           onClick={() => setMotionPathArmed(!motionPathArmed)}
           title={
@@ -115,7 +113,9 @@ export const SnapToolbar = memo(function SnapToolbar() {
             key={key}
             type="button"
             className={`rounded-md p-1.5 transition-colors active:scale-[0.95] ${
-              visible ? "bg-studio-accent/20 text-accent-ink" : overlayButtonOff
+              visible
+                ? "bg-studio-accent/20 text-accent-ink"
+                : "bg-black/40 text-white/60 hover:bg-black/60 hover:text-white/80"
             }`}
             onClick={() => {
               toggle();
@@ -132,7 +132,9 @@ export const SnapToolbar = memo(function SnapToolbar() {
       <button
         type="button"
         className={`rounded-md p-1.5 transition-colors active:scale-[0.95] ${
-          prefs.snapEnabled ? "bg-studio-accent/20 text-accent-ink" : overlayButtonOff
+          prefs.snapEnabled
+            ? "bg-studio-accent/20 text-accent-ink"
+            : "bg-black/40 text-white/60 hover:bg-black/60 hover:text-white/80"
         }`}
         onClick={toggleSnap}
         title={prefs.snapEnabled ? "Snap enabled (S)" : "Snap disabled (S)"}
@@ -146,7 +148,9 @@ export const SnapToolbar = memo(function SnapToolbar() {
           ref={gridButtonRef}
           type="button"
           className={`rounded-md p-1.5 transition-colors active:scale-[0.95] ${
-            prefs.gridVisible ? "bg-studio-accent/20 text-accent-ink" : overlayButtonOff
+            prefs.gridVisible
+              ? "bg-studio-accent/20 text-accent-ink"
+              : "bg-black/40 text-white/60 hover:bg-black/60 hover:text-white/80"
           }`}
           onClick={toggleGrid}
           onContextMenu={(e) => {
@@ -165,7 +169,7 @@ export const SnapToolbar = memo(function SnapToolbar() {
         </button>
         <button
           type="button"
-          className="absolute -right-0.5 -bottom-0.5 rounded-sm p-0.5 bg-background-tertiary-default text-foreground-icon-secondary hover:text-foreground-icon-primary"
+          className="absolute -right-0.5 -bottom-0.5 rounded-sm p-0.5 text-white/50 hover:text-white/90 bg-black/50"
           onClick={() => {
             if (gridPopoverOpen) settleGridSpacing();
             setGridPopoverOpen((v) => !v);
diff --git a/packages/studio/src/components/nle/NLEPreview.test.ts b/packages/studio/src/components/nle/NLEPreview.test.ts
index e7987e8c71e..5c0b088c376 100644
--- a/packages/studio/src/components/nle/NLEPreview.test.ts
+++ b/packages/studio/src/components/nle/NLEPreview.test.ts
@@ -218,9 +218,9 @@ describe("NLEPreview", () => {
   it("draws the canvas boundary on the preview stage", () => {
     const view = renderPreview();
 
-    // A hairline and BoardUI's medium shadow, light enough beside promptwise's flat cards.
-    expect(view.stage.className).toContain("ring-1 ring-border-button-default");
-    expect(view.stage.className).toContain("shadow-md");
+    expect(view.stage.className).toContain(
+      "shadow-[0_0_0_1px_rgba(255,255,255,0.08),0_4px_32px_rgba(0,0,0,0.7)]",
+    );
     view.cleanup();
   });
 
diff --git a/packages/studio/src/components/nle/NLEPreview.tsx b/packages/studio/src/components/nle/NLEPreview.tsx
index 87c9e19065b..209ec90c99a 100644
--- a/packages/studio/src/components/nle/NLEPreview.tsx
+++ b/packages/studio/src/components/nle/NLEPreview.tsx
@@ -506,7 +506,7 @@ export const NLEPreview = memo(function NLEPreview({
         >
           <div
             ref={stageRef}
-            className="relative shrink-0 pointer-events-auto shadow-md ring-1 ring-border-button-default"
+            className="relative shrink-0 pointer-events-auto shadow-[0_0_0_1px_rgba(255,255,255,0.08),0_4px_32px_rgba(0,0,0,0.7)]"
             style={{
               width: `${stageSize.width}px`,
               height: `${stageSize.height}px`,
diff --git a/packages/studio/src/hooks/useStudioUrlState.opening.dom.test.tsx b/packages/studio/src/hooks/useStudioUrlState.opening.dom.test.tsx
deleted file mode 100644
index d00671bbb82..00000000000
--- a/packages/studio/src/hooks/useStudioUrlState.opening.dom.test.tsx
+++ /dev/null
@@ -1,56 +0,0 @@
-// @vitest-environment happy-dom
-
-/** In promptwise's tab a film opens a second in, not on its empty first frame; a time in the link still wins. */
-import React, { act } from "react";
-import { createRoot } from "react-dom/client";
-import { expect, it, vi } from "vitest";
-import { usePlayerStore } from "../player";
-
-(globalThis as unknown as { IS_REACT_ACT_ENVIRONMENT: boolean }).IS_REACT_ACT_ENVIRONMENT = true;
-
-vi.mock("../promptwise/embed", async (original) => ({
-  ...(await original<typeof import("../promptwise/embed")>()),
-  embeddedInPromptwise: true,
-}));
-
-const { useStudioUrlState } = await import("./useStudioUrlState");
-
-function Probe({ duration, currentTime }: { duration: number; currentTime: number | null }) {
-  useStudioUrlState({
-    projectId: "promo",
-    activeCompPath: "index.html",
-    duration,
-    isPlaying: false,
-    compositionLoading: false,
-    refreshKey: 0,
-    previewIframeRef: { current: null },
-    rightPanelTab: "design",
-    rightCollapsed: true,
-    activeCompPathHydrated: true,
-    domEditSelection: null,
-    domEditGroupSelections: [],
-    applyMarqueeSelection: vi.fn(),
-    buildDomSelectionFromTarget: vi.fn(async () => null),
-    applyDomSelection: vi.fn(),
-    setRightPanelTab: vi.fn(),
-    initialState: { currentTime, selection: null } as never,
-  });
-  return null;
-}
-
-function openAt(duration: number, currentTime: number | null) {
-  usePlayerStore.getState().clearSeekRequest();
-  const root = createRoot(document.createElement("div"));
-  act(() => root.render(<Probe duration={duration} currentTime={currentTime} />));
-  const seek = usePlayerStore.getState().requestedSeekTime;
-  act(() => root.unmount());
-  return seek;
-}
-
-it("opens a film a second in, a short one halfway, and a link's own time as it is", () => {
-  expect(openAt(11.5, null)).toBe(1);
-  expect(openAt(1.2, null)).toBe(0.6);
-  expect(openAt(11.5, 4.2)).toBe(4.2);
-  // The composition's length isn't known yet: wait for it rather than seek to 0.
-  expect(openAt(0, null)).toBeNull();
-});
diff --git a/packages/studio/src/hooks/useStudioUrlState.ts b/packages/studio/src/hooks/useStudioUrlState.ts
index 08cb7a00dfe..03b628c81af 100644
--- a/packages/studio/src/hooks/useStudioUrlState.ts
+++ b/packages/studio/src/hooks/useStudioUrlState.ts
@@ -3,7 +3,6 @@ import { usePlayerStore } from "../player";
 import { findElementForSelection, type DomEditSelection } from "../components/editor/domEditing";
 import { clampNumber, type RightPanelTab } from "../utils/studioHelpers";
 import { parseProjectIdFromHash } from "../utils/projectRouting";
-import { embeddedInPromptwise, openingTime } from "../promptwise/embed";
 import {
   buildStudioHash,
   parseStudioUrlStateFromHash,
@@ -12,17 +11,6 @@ import {
   type StudioUrlState,
 } from "../utils/studioUrlState";
 
-/** A link with a time seeks there; in promptwise one without seeks too, to the opening frame. */
-function seeksOnHydration(requested: number | null): boolean {
-  return requested != null || embeddedInPromptwise;
-}
-
-/** Where hydration seeks: the link's time, else the opening frame (promptwise only); null until the length is known. */
-function hydrationSeekTime(requested: number | null, duration: number): number | null {
-  if (requested == null) return duration > 0 ? openingTime(duration) : null;
-  return duration > 0 ? clampNumber(requested, 0, duration) : Math.max(0, requested);
-}
-
 interface UseStudioUrlStateParams {
   projectId: string | null;
   activeCompPath: string | null;
@@ -172,8 +160,6 @@ export async function resolveUrlSelections({
   return members;
 }
 
-// Inherited: cognitive 17 before the promptwise opening frame, which added none (fallow re-flags edited files).
-// fallow-ignore-next-line complexity
 export function useStudioUrlState({
   projectId,
   activeCompPath,
@@ -194,8 +180,7 @@ export function useStudioUrlState({
   initialState,
 }: UseStudioUrlStateParams) {
   const currentTime = usePlayerStore((s) => s.currentTime);
-  // In promptwise a link without a time still opens on a frame that shows something (openingTime).
-  const hydratedSeekRef = useRef(!seeksOnHydration(initialState.currentTime));
+  const hydratedSeekRef = useRef(initialState.currentTime == null);
   const hydratedInitialTimeRef = useRef(initialState.currentTime == null);
   const hydratedSelectionRef = useRef(initialState.selection == null);
   // Mirrors hydratedSelectionRef as state so the selection-hydration effect can
@@ -281,8 +266,11 @@ export function useStudioUrlState({
   );
 
   useEffect(() => {
-    const nextTime = hydrationSeekTime(initialState.currentTime, duration);
-    if (!projectId || hydratedSeekRef.current || compositionLoading || nextTime == null) return;
+    if (!projectId || hydratedSeekRef.current || compositionLoading) return;
+    const nextTime =
+      duration > 0
+        ? clampNumber(initialState.currentTime ?? 0, 0, duration)
+        : Math.max(0, initialState.currentTime ?? 0);
     // The request is honored even if it fires before the player runtime mounts:
     // initializeAdapter reconciles the store's requestedSeekTime when the adapter
     // becomes ready. currentTime then settles to nextTime, releasing the selection
diff --git a/packages/studio/src/player/components/TimelineShortcutHint.tsx b/packages/studio/src/player/components/TimelineShortcutHint.tsx
index 44880d81df7..252586b6158 100644
--- a/packages/studio/src/player/components/TimelineShortcutHint.tsx
+++ b/packages/studio/src/player/components/TimelineShortcutHint.tsx
@@ -6,7 +6,7 @@ interface TimelineShortcutHintProps {
 
 export function TimelineShortcutHint({ theme }: TimelineShortcutHintProps) {
   return (
-    <div className="hf-timeline-shortcut-hint absolute bottom-2 right-3 pointer-events-none z-20">
+    <div className="absolute bottom-2 right-3 pointer-events-none z-20">
       <div
         className="flex items-center gap-1.5 px-2 py-1 rounded-md border"
         style={{ background: "var(--timeline-shortcut-bg)", borderColor: theme.gutterBorder }}
diff --git a/packages/studio/src/promptwise/embed.ts b/packages/studio/src/promptwise/embed.ts
index 69cdd42cfab..2fa085534e5 100644
--- a/packages/studio/src/promptwise/embed.ts
+++ b/packages/studio/src/promptwise/embed.ts
@@ -3,8 +3,3 @@ export const embeddedInPromptwise = typeof window !== "undefined" && window.pare
 export function askPromptwiseAgent() {
   window.parent.postMessage({ type: "promptwise:ask-agent" }, "*");
 }
-
-/** Where a film opens in promptwise's tab: a second in, where its first shot has arrived, not its empty first frame. */
-export function openingTime(duration: number): number {
-  return Math.min(1, duration / 2);
-}
diff --git a/packages/studio/src/promptwise/theme.css b/packages/studio/src/promptwise/theme.css
index 2611f94da27..ad40ce20a80 100644
--- a/packages/studio/src/promptwise/theme.css
+++ b/packages/studio/src/promptwise/theme.css
@@ -24,8 +24,7 @@
   --color-text-off: var(--color-text-tertiary);
 
   --panel-shell-bg: var(--color-background-secondary-default);
-  /* The tab strip sits inside each panel's card, as in promptwise's own panels. */
-  --panel-strip-bg: var(--panel-card-bg);
+  --panel-strip-bg: var(--color-background-secondary-default);
 
   /* The promptwise orange. */
   --color-accent: light-dark(var(--color-accent-600), var(--color-accent-500));
@@ -47,32 +46,12 @@
   padding: 0 4px;
 }
 
-/* BoardUI's card radius on the dock's panels. */
+/* BoardUI's card radius on the dock's panels and their tabs. */
 .hf-dock .dv-groupview {
   border-radius: 16px;
 }
 
-/* Tabs are BoardUI's gray pill tabs (promptwise's PillTab "gray"): the shown one on the tertiary background. */
-.hf-dock .dv-tabs-and-actions-container {
-  padding: 6px 6px 0;
-}
-
-.hf-dock .dv-tab.dv-tab,
-.hf-dock-tab-fill {
-  height: 28px;
-  border-radius: var(--radius-md);
-}
-
+.hf-dock .dv-tab,
 .hf-dock-tab-fill {
-  background-color: var(--color-background-tertiary-default);
-}
-
-/* The Shift+drag hint shows while the pointer is over the timeline's panel, not all the time. */
-.hf-timeline-shortcut-hint {
-  opacity: 0;
-  transition: opacity 150ms ease-out;
-}
-
-.dv-groupview:hover .hf-timeline-shortcut-hint {
-  opacity: 1;
+  border-radius: 10px 10px 0 0;
 }
diff --git a/packages/studio/src/promptwise/usePromptwiseToolbar.ts b/packages/studio/src/promptwise/usePromptwiseToolbar.ts
deleted file mode 100644
index fcc5e0bafa3..00000000000
--- a/packages/studio/src/promptwise/usePromptwiseToolbar.ts
+++ /dev/null
@@ -1,44 +0,0 @@
-import { useEffect, useRef } from "react";
-import { embeddedInPromptwise } from "./embed";
-
-export type PromptwiseCommand = "inspector" | "export";
-
-export interface PromptwiseToolbarState {
-  inspectorOpen: boolean;
-  rendering: boolean;
-}
-
-function isCommand(value: unknown): value is PromptwiseCommand {
-  return value === "inspector" || value === "export";
-}
-
-/**
- * Embedded in promptwise, Studio draws no header: the Timeline tab's toolbar carries Inspector and
- * Export. It sends their presses as promptwise:command messages, and Studio sends back their state.
- */
-export function usePromptwiseToolbar(
-  state: PromptwiseToolbarState,
-  commands: Record<PromptwiseCommand, () => void>,
-) {
-  const latest = useRef(commands);
-  latest.current = commands;
-
-  useEffect(() => {
-    if (!embeddedInPromptwise) return;
-    const onMessage = (event: MessageEvent) => {
-      if (event.source !== window.parent) return;
-      const data: unknown = event.data;
-      if (typeof data !== "object" || data === null) return;
-      const { type, command } = data as { type?: unknown; command?: unknown };
-      if (type === "promptwise:command" && isCommand(command)) latest.current[command]();
-    };
-    window.addEventListener("message", onMessage);
-    return () => window.removeEventListener("message", onMessage);
-  }, []);
-
-  const { inspectorOpen, rendering } = state;
-  useEffect(() => {
-    if (!embeddedInPromptwise) return;
-    window.parent.postMessage({ type: "promptwise:state", inspectorOpen, rendering }, "*");
-  }, [inspectorOpen, rendering]);
-}