fix: Root-Route zeigt Next.js-Scaffold statt der App

src/app/page.tsx war seit dem Projekt-Scaffold nie ersetzt worden -
die echte App laeuft komplett unter (app)/dashboard, (auth)/login etc.,
aber "/" selbst wurde nie verdrahtet und zeigte weiterhin die
create-next-app-Standardseite. / leitet jetzt zu /dashboard weiter;
(app)/layout.tsx uebernimmt von dort den bestehenden Auth-Redirect zu
/login fuer nicht angemeldete User.

Root Cause via systematic-debugging gefunden: Pod lief mit korrektem,
frisch gepushtem Image (kubectl describe bestaetigt), Ursache lag im
App-Code selbst, nicht in Build/Deploy-Pipeline.

ApiCore-Frontend/src/app/page.spec.tsx

@@ -1,17 +1,14 @@
-import { describe, expect, it } from "vitest";
+import { describe, expect, it, vi } from "vitest";
-import { render, screen } from "@testing-library/react";
+import { redirect } from "next/navigation";
-import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 import Page from "./page";
 
+vi.mock("next/navigation", () => ({
+  redirect: vi.fn(),
+}));
+
 describe("Home page", () => {
-  it("renders without crashing", () => {
+  it("redirects to the dashboard", () => {
-    const queryClient = new QueryClient();
+    Page();
-    render(
+    expect(redirect).toHaveBeenCalledWith("/dashboard");
-      <QueryClientProvider client={queryClient}>
-        <Page />
-      </QueryClientProvider>,
-    );
-    expect(document.body).toBeTruthy();
-    expect(screen.getByRole("main")).toBeInTheDocument();
   });
 });

ApiCore-Frontend/src/app/page.tsx

@@ -1,69 +1,5 @@
-import Image from "next/image";
+import { redirect } from "next/navigation";
 
 export default function Home() {
-  return (
+  redirect("/dashboard");
-    <div className="flex flex-col flex-1 items-center justify-center bg-zinc-50 font-sans dark:bg-black">
-      <main className="flex flex-1 w-full max-w-3xl flex-col items-center justify-between py-32 px-16 bg-white dark:bg-black sm:items-start">
-        <Image
-          className="dark:invert h-5 w-[100px]"
-          src="/next.svg"
-          alt="Next.js logo"
-          width={100}
-          height={20}
-          priority
-        />
-        <div className="flex flex-col items-center gap-6 text-center sm:items-start sm:text-left">
-          <h1 className="max-w-xs text-3xl font-semibold leading-10 tracking-tight text-black dark:text-zinc-50">
-            To get started, edit the{" "}
-            <code className="rounded bg-black/[.06] px-1.5 py-0.5 font-mono text-[0.9em] dark:bg-white/[.08]">
-              page.tsx
-            </code>{" "}
-            file.
-          </h1>
-          <p className="max-w-md text-lg leading-8 text-zinc-600 dark:text-zinc-400">
-            Looking for a starting point or more instructions? Head over to{" "}
-            <a
-              href="https://vercel.com/templates?framework=next.js&utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-              className="font-medium text-zinc-950 dark:text-zinc-50"
-            >
-              Templates
-            </a>{" "}
-            or the{" "}
-            <a
-              href="https://nextjs.org/learn?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-              className="font-medium text-zinc-950 dark:text-zinc-50"
-            >
-              Learning
-            </a>{" "}
-            center.
-          </p>
-        </div>
-        <div className="flex flex-col gap-4 text-base font-medium sm:flex-row">
-          <a
-            className="flex h-12 w-full items-center justify-center gap-2 rounded-full bg-foreground px-5 text-background transition-colors hover:bg-[#383838] dark:hover:bg-[#ccc] md:w-[158px]"
-            href="https://vercel.com/new?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            <Image
-              className="dark:invert h-[14px] w-4"
-              src="/vercel.svg"
-              alt="Vercel logomark"
-              width={16}
-              height={14}
-            />
-            Deploy Now
-          </a>
-          <a
-            className="flex h-12 w-full items-center justify-center rounded-full border border-solid border-black/[.08] px-5 transition-colors hover:border-transparent hover:bg-black/[.04] dark:border-white/[.145] dark:hover:bg-[#1a1a1a] md:w-[158px]"
-            href="https://nextjs.org/docs?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            Documentation
-          </a>
-        </div>
-      </main>
-    </div>
-  );
 }