inital commit, very early alpha stage

frontend/src/test/App.test.tsx

@@ -0,0 +1,30 @@
+import { render, screen } from "@testing-library/react";
+import { MemoryRouter } from "react-router-dom";
+import { describe, expect, it, vi } from "vitest";
+import { App } from "../app/App";
+
+describe("App", () => {
+  it("renders the shell after dev bootstrap", async () => {
+    vi.stubGlobal(
+      "fetch",
+      vi.fn()
+        .mockResolvedValueOnce(new Response(JSON.stringify({ authenticated: true, dev_mode: true }), { status: 200 }))
+        .mockResolvedValueOnce(
+          new Response(
+            JSON.stringify({
+              profile: { primary_display_name: "Anna Müller" },
+              sections: { needs_me: [], today: [], changed: [], official_updates: [], catch_up: [] },
+              connections: []
+            }),
+            { status: 200 }
+          )
+        )
+    );
+    render(
+      <MemoryRouter initialEntries={["/"]}>
+        <App />
+      </MemoryRouter>
+    );
+    expect(await screen.findByText("What needs attention")).toBeInTheDocument();
+  });
+});