diff --git a/tests/e2e/viewport-test-helpers.ts b/tests/e2e/viewport-test-helpers.ts
deleted file mode 100644
index d78421ce..00000000
--- a/tests/e2e/viewport-test-helpers.ts
+++ /dev/null
@@ -1,140 +0,0 @@
-import type { Page } from "@playwright/test";
-
-import type { ViewportPlacementPreviewTarget } from "../../src/viewport-three/viewport-transient-state";
-
-export const DEFAULT_VIEWPORT_PANEL_ID = "topLeft";
-
-export function getViewportPanel(page: Page, panelId: string = DEFAULT_VIEWPORT_PANEL_ID) {
-  return page.getByTestId(`viewport-panel-${panelId}`);
-}
-
-export function getViewportCanvas(page: Page, panelId: string = DEFAULT_VIEWPORT_PANEL_ID) {
-  return getViewportPanel(page, panelId).locator("canvas");
-}
-
-export function getViewportOverlay(page: Page, panelId: string = DEFAULT_VIEWPORT_PANEL_ID) {
-  return page.getByTestId(`viewport-overlay-${panelId}`);
-}
-
-interface EditorStoreSnapshot {
-  selection: {
-    kind: string;
-    ids?: string[];
-  };
-  document: {
-    assets: Record<string, { id: string; kind: string; sourceName: string }>;
-    modelInstances: Record<string, { position: { x: number; y: number; z: number } }>;
-    entities: Record<string, { position: { x: number; y: number; z: number } }>;
-  };
-  viewportTransientState: {
-    toolPreview: unknown;
-  };
-}
-
-export async function getEditorStoreSnapshot(page: Page): Promise<EditorStoreSnapshot> {
-  return page.evaluate(() => {
-    const store = (window as Window & {
-      __webeditor3dEditorStore?: {
-        getState(): EditorStoreSnapshot;
-      };
-    }).__webeditor3dEditorStore;
-
-    if (store === undefined) {
-      throw new Error("Editor store debug hook is unavailable.");
-    }
-
-    return store.getState();
-  });
-}
-
-export async function getViewportToolPreview(page: Page): Promise<EditorStoreSnapshot["viewportTransientState"]["toolPreview"]> {
-  const snapshot = await getEditorStoreSnapshot(page);
-  return snapshot.viewportTransientState.toolPreview;
-}
-
-export async function setViewportPlacementPreview(
-  page: Page,
-  panelId: string,
-  target: ViewportPlacementPreviewTarget,
-  center: { x: number; y: number; z: number } | null
-) {
-  await page.evaluate(
-    ({ sourcePanelId, nextTarget, nextCenter }) => {
-      const store = (window as Window & {
-        __webeditor3dEditorStore?: {
-          setViewportToolPreview(preview: { kind: "none" } | { kind: "placement"; sourcePanelId: string; target: ViewportPlacementPreviewTarget; center: { x: number; y: number; z: number } | null }): void;
-        };
-      }).__webeditor3dEditorStore;
-
-      if (store === undefined) {
-        throw new Error("Editor store debug hook is unavailable.");
-      }
-
-      store.setViewportToolPreview(
-        nextCenter === null
-          ? { kind: "none" }
-          : {
-              kind: "placement",
-              sourcePanelId,
-              target: nextTarget,
-              center: nextCenter
-            }
-      );
-    },
-    {
-      sourcePanelId: panelId,
-      nextTarget: target,
-      nextCenter: center
-    }
-  );
-}
-
-export async function clickViewport(page: Page, panelId: string = DEFAULT_VIEWPORT_PANEL_ID) {
-  const viewportPanel = getViewportPanel(page, panelId);
-  await viewportPanel.click({ position: { x: 16, y: 16 }, force: true });
-
-  const viewportCanvas = getViewportCanvas(page, panelId);
-
-  if ((await viewportCanvas.count()) > 0) {
-    await viewportCanvas.click();
-    return;
-  }
-
-  const fallbackButton = viewportPanel.getByTestId(`viewport-fallback-create-box-${panelId}`);
-  await fallbackButton.waitFor({ state: "visible" });
-  await fallbackButton.click();
-}
-
-export async function setSharedBoxCreatePreview(
-  page: Page,
-  panelId: string,
-  center: { x: number; y: number; z: number } | null
-) {
-  await page.evaluate(
-    ({ panelId: sourcePanelId, center: nextCenter }) => {
-      const store = (window as Window & {
-        __webeditor3dEditorStore?: {
-          setViewportToolPreview(preview: { kind: "none" } | { kind: "box-create"; sourcePanelId: string; center: { x: number; y: number; z: number } | null }): void;
-        };
-      }).__webeditor3dEditorStore;
-
-      if (store === undefined) {
-        throw new Error("Editor store debug hook is unavailable.");
-      }
-
-      store.setViewportToolPreview(
-        nextCenter === null
-          ? { kind: "none" }
-          : {
-              kind: "box-create",
-              sourcePanelId,
-              center: nextCenter
-            }
-      );
-    },
-    {
-      panelId,
-      center
-    }
-  );
-}