feat: Sprint 4 complete — frontend MVP (admin dashboard + member portal)

Shadboard starter-kit (Next.js 15 + React 19 + shadcn/ui + Tailwind 4)

Sprint 4.a — Admin Dashboard:
- Auth: NextAuth.js v5, login page, middleware, token rotation
- Dashboard: KPI cards, Recharts stock chart, quick actions
- Members: TanStack Table (search/sort/paginate), add/edit forms
- Distributions: multi-step form, real-time quota check, history
- Stock: batch management, recall dialog, bar chart
- Reports: monthly/member-list/recall, PDF/CSV download, preview

Sprint 4.b — Member Portal:
- Separate route group with top-nav layout (mobile-first)
- Quota dashboard with radial SVG progress indicators
- Distribution history with month filter
- Profile/settings with password change

Cross-cutting:
- i18n: German (default) + English via next-intl
- Dark + light mode (next-themes, user-togglable)
- Playwright E2E tests (6/6 green)
- Docker multi-stage build (node:22-alpine)
- API proxy via Next.js rewrites

Tech: Next.js 15.2.8, React 19, Tailwind 4, NextAuth v5,
TanStack Table, Recharts, Zod, React Hook Form, Playwright

cannamanage-frontend/next.config.mjs

@@ -0,0 +1,24 @@
+import createNextIntlPlugin from "next-intl/plugin"
+
+const withNextIntl = createNextIntlPlugin("./src/i18n/request.ts")
+
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  // See https://lucide.dev/guide/packages/lucide-react#nextjs-example
+  transpilePackages: ["lucide-react"],
+
+  // Required for Docker standalone output
+  output: "standalone",
+
+  // Proxy API calls to the Spring Boot backend
+  async rewrites() {
+    return [
+      {
+        source: "/api/backend/:path*",
+        destination: `${process.env.BACKEND_URL || "http://localhost:8080"}/api/v1/:path*`,
+      },
+    ]
+  },
+}
+
+export default withNextIntl(nextConfig)