Integrate Prisma for content; enhance SEO, i18n, and deployment workflows

Co-authored-by: dennis <dennis@konkol.net>

e2e/consent.spec.ts

@@ -0,0 +1,27 @@
+import { test, expect } from "@playwright/test";
+
+test.describe("Consent banner", () => {
+  test("banner shows and can be accepted", async ({ page, context }) => {
+    // Start clean
+    await context.clearCookies();
+
+    await page.goto("/en", { waitUntil: "domcontentloaded" });
+
+    // Banner should appear on public pages when no consent is set yet
+    const bannerTitle = page.getByText(/Privacy settings|Datenschutz-Einstellungen/i);
+    await expect(bannerTitle).toBeVisible({ timeout: 10000 });
+
+    // Accept all
+    const acceptAll = page.getByRole("button", { name: /Accept all|Alles akzeptieren/i });
+    await acceptAll.click();
+
+    // Banner disappears
+    await expect(bannerTitle).toBeHidden({ timeout: 10000 });
+
+    // Cookie is written
+    const cookies = await context.cookies();
+    const consentCookie = cookies.find((c) => c.name === "dk0_consent_v1");
+    expect(consentCookie).toBeTruthy();
+  });
+});
+