feat: add presentation route shell

web/apps/console/src/presentation/PresentationRoute.test.tsx

@@ -0,0 +1,14 @@
+import { cleanup, render, screen } from "@testing-library/react";
+import { afterEach, describe, expect, it } from "vitest";
+import { PresentationRoute } from "./PresentationRoute.js";
+
+afterEach(() => cleanup());
+
+describe("PresentationRoute", () => {
+  it("renders the presentation stage entry point", () => {
+    render(<PresentationRoute />);
+
+    expect(screen.getByRole("main", { name: /lda.chat presentation/i })).toBeInTheDocument();
+    expect(screen.getByText(/planner decisions/i)).toBeInTheDocument();
+  });
+});

web/apps/console/src/presentation/PresentationRoute.tsx

@@ -0,0 +1,5 @@
+export const PresentationRoute = () => (
+  <main className="presentation-route" aria-label="lda.chat presentation">
+    <p>Planner decisions are separated from deterministic runtime execution.</p>
+  </main>
+);