feat: Grundgeruest fertigstellen (Backend/Frontend/K8s)

Backend: Prisma-Client auf prisma-client-js + Driver-Adapter (@prisma/adapter-pg)
umgestellt (Prisma 7 verlangt Adapter, ESM-Client brach an Jest), erste Migration
erzeugt und angewendet, /api/v1 Versioning, Swagger unter /api/v1/docs, Helmet,
globale ValidationPipe, PrismaModule, HealthModule (/health, /health/ready mit
DB-Check), tsconfig.build.json Root-Dir-Fix (dist/main.js statt dist/src/main.js).

Frontend: Tailwind v4 + shadcn/ui initialisiert, TanStack Query Provider, PWA
Manifest (app/manifest.ts), Vitest + Testing Library Setup, next.config output
standalone.

deploy/k8s: Dockerfiles (Backend/Frontend, Multi-Stage) + Deployment/Service/
Ingress/ConfigMap/Secret-Vorlagen fuer beide Projekte.

Lokale Dev-/Test-Postgres-Instanz unter ApiCore-Backend/.devdb angelegt (eigene
Rolle, kein bestehendes Passwort noetig), .env/.env.test lokal befuellt.

Lint, Typecheck, Tests und Build sind fuer Backend und Frontend gruen; Server
wurde lokal gestartet und /health, /health/ready, /api/v1/docs manuell verifiziert.

ApiCore-Frontend/src/app/layout.tsx

@@ -1,6 +1,7 @@
 import type { Metadata } from "next";
 import { Geist, Geist_Mono } from "next/font/google";
 import "./globals.css";
+import { Providers } from "./providers";
 
 const geistSans = Geist({
   variable: "--font-geist-sans",
@@ -13,17 +14,19 @@ const geistMono = Geist_Mono({
 });
 
 export const metadata: Metadata = {
-  title: "Create Next App",
-  description: "Generated by create next app",
+  title: "ApiCore – Imkereiverwaltung",
+  description: "Digitale Imkereiverwaltung für Wabenhain",
 };
 
 export default function RootLayout({ children }: LayoutProps<"/">) {
   return (
     <html
-      lang="en"
+      lang="de"
       className={`${geistSans.variable} ${geistMono.variable} h-full antialiased`}
     >
-      <body className="min-h-full flex flex-col">{children}</body>
+      <body className="min-h-full flex flex-col">
+        <Providers>{children}</Providers>
+      </body>
     </html>
   );
 }