chore: Next.js-Grundgerüst mit AdminLTE-CSS und Bootstrap Icons (#001)

Next.js 16 (App Router, TypeScript strict), admin-lte 4.9.1 (nur CSS),
bootstrap 5.3.8, bootstrap-icons, zod. Version 0.1.0-dev.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

AGENTS.md

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+<!-- BEGIN:nextjs-agent-rules -->
+
+# This is NOT the Next.js you know
+
+This version has breaking changes — APIs, conventions, and file structure may all differ from your training data. Read the relevant guide in `node_modules/next/dist/docs/` (resolved from this file's directory; in monorepos the `next` package may not be visible from the repo root) before writing any code. Heed deprecation notices.
+
+This block is written and re-added by `next dev` — verify at `node_modules/next/dist/server/lib/generate-agent-files.js`. Removing it from a diff only re-creates the uncommitted change; committing it with your work keeps the tree clean.
+
+<!-- END:nextjs-agent-rules -->

CLAUDE.md

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+@AGENTS.md

README.md

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+# ProxLedger
+
+Zentrales Dashboard für den Subscription-Status aller Proxmox-Hosts (VE, Backup Server, Mail Gateway).
+Auf jedem Host meldet ein schlanker Agent täglich per HTTPS seinen Status (Push-Modell) – auch aus Kundennetzen hinter NAT.
+
+> **Status:** in Entwicklung (0.1.0-dev). Noch nicht produktiv einsetzen.
+
+## Entwicklung
+
+Voraussetzungen: Node.js ≥ 24, Docker (für PostgreSQL ab #003).
+
+```bash
+npm install
+npm run dev        # http://localhost:3000
+npm run lint
+npm run typecheck
+npm test
+```
+
+## Dokumentation
+
+- [Architektur- und Umsetzungsplan](docs/architektur.md)
+- [Issues](docs/issues/README.md)
+- [Changelog](CHANGELOG.md) · [Devlog](DEVLOG.md)

next.config.ts

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+import type { NextConfig } from "next";
+
+const nextConfig: NextConfig = {
+  /* config options here */
+};
+
+export default nextConfig;

package.json

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+{
+  "name": "proxledger",
+  "version": "0.1.0-dev",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "eslint",
+    "typecheck": "tsc --noEmit",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "format": "prettier --write ."
+  },
+  "dependencies": {
+    "admin-lte": "^4.9.1",
+    "bootstrap": "^5.3.8",
+    "bootstrap-icons": "^1.13.1",
+    "next": "16.3.5",
+    "react": "19.2.8",
+    "react-dom": "19.2.8",
+    "zod": "^4.6.5"
+  },
+  "devDependencies": {
+    "@types/node": "^24.13.5",
+    "@types/react": "^19",
+    "@types/react-dom": "^19",
+    "eslint": "^9",
+    "eslint-config-next": "16.3.5",
+    "eslint-config-prettier": "^10.1.8",
+    "prettier": "^3.9.7",
+    "typescript": "^5",
+    "vitest": "^5.0.1"
+  },
+  "description": "Proxmox Subscription Dashboard",
+  "engines": {
+    "node": ">=24"
+  }
+}

src/app/globals.css

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+/* Wird in #002 durch das ProxLedger-Theme ersetzt. */

src/app/layout.tsx

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+import type { Metadata } from "next";
+import "admin-lte/dist/css/adminlte.css";
+import "bootstrap-icons/font/bootstrap-icons.css";
+import "./globals.css";
+
+export const metadata: Metadata = {
+  title: "ProxLedger",
+  description: "Proxmox Subscription Dashboard",
+};
+
+export default function RootLayout({ children }: Readonly<{ children: React.ReactNode }>) {
+  return (
+    <html lang="de">
+      <body>{children}</body>
+    </html>
+  );
+}

src/app/page.tsx

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+import { APP_VERSION } from "@/lib/version";
+
+export default function Home() {
+  return (
+    <main className="container py-5">
+      <h1>ProxLedger</h1>
+      <p className="text-body-secondary">Proxmox Subscription Dashboard · Version {APP_VERSION}</p>
+    </main>
+  );
+}

src/lib/version.ts

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+import pkg from "../../package.json";
+
+/** Anwendungsversion aus package.json, wird im Footer angezeigt. */
+export const APP_VERSION: string = pkg.version;

tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "ES2017",
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "react-jsx",
+    "incremental": true,
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ],
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  },
+  "include": [
+    "next-env.d.ts",
+    "**/*.ts",
+    "**/*.tsx",
+    ".next/types/**/*.ts",
+    ".next/dev/types/**/*.ts",
+    "**/*.mts"
+  ],
+  "exclude": ["node_modules"]
+}