diff --git a/.gitignore b/.gitignore
index ddcf765..24f8266 100644
--- a/.gitignore
+++ b/.gitignore
@@ -64,6 +64,10 @@ htmlcov/
 
 # Claude Code
 .claude/
+CLAUDE_CODE_SPEC.md
+PROJECT_SUMMARY.md
+QUICKSTART.md
+VS_CODE_SETUP.md
 
 # Windows artifacts
 nul
diff --git a/CLAUDE_CODE_SPEC.md b/CLAUDE_CODE_SPEC.md
deleted file mode 100644
index 1bc5cf4..0000000
--- a/CLAUDE_CODE_SPEC.md
+++ /dev/null
@@ -1,459 +0,0 @@
-# NetBird MSP Appliance - Claude Code Specification
-
-## Project Overview
-Build a complete, production-ready multi-tenant NetBird management platform that runs entirely in Docker containers. This is an MSP (Managed Service Provider) tool to manage 100+ isolated NetBird instances from a single web interface.
-
-## Technology Stack
-- **Backend**: Python 3.11+ with FastAPI
-- **Frontend**: HTML5 + Bootstrap 5 + Vanilla JavaScript (no frameworks)
-- **Database**: SQLite
-- **Containerization**: Docker + Docker Compose
-- **Templating**: Jinja2 for Docker Compose generation
-- **Integration**: Docker Python SDK, Nginx Proxy Manager API
-
-## Project Structure
-
-```
-netbird-msp-appliance/
-├── README.md                          # Main documentation
-├── QUICKSTART.md                      # Quick start guide
-├── ARCHITECTURE.md                    # Architecture documentation
-├── LICENSE                            # MIT License
-├── .gitignore                         # Git ignore file
-├── .env.example                       # Environment variables template
-├── install.sh                         # One-click installation script
-├── docker-compose.yml                 # Main application container
-├── Dockerfile                         # Application container definition
-├── requirements.txt                   # Python dependencies
-│
-├── app/                               # Python application
-│   ├── __init__.py
-│   ├── main.py                        # FastAPI entry point
-│   ├── models.py                      # SQLAlchemy models
-│   ├── database.py                    # Database setup
-│   ├── dependencies.py                # FastAPI dependencies
-│   │
-│   ├── routers/                       # API endpoints
-│   │   ├── __init__.py
-│   │   ├── auth.py                    # Authentication endpoints
-│   │   ├── customers.py               # Customer CRUD
-│   │   ├── deployments.py             # Deployment management
-│   │   ├── monitoring.py              # Status & health checks
-│   │   └── settings.py                # System configuration
-│   │
-│   ├── services/                      # Business logic
-│   │   ├── __init__.py
-│   │   ├── docker_service.py          # Docker container management
-│   │   ├── npm_service.py             # NPM API integration
-│   │   ├── netbird_service.py         # NetBird deployment orchestration
-│   │   └── port_manager.py            # UDP port allocation
-│   │
-│   └── utils/                         # Utilities
-│       ├── __init__.py
-│       ├── config.py                  # Configuration management
-│       ├── security.py                # Encryption, hashing
-│       └── validators.py              # Input validation
-│
-├── templates/                         # Jinja2 templates
-│   ├── docker-compose.yml.j2          # Per-customer Docker Compose
-│   ├── management.json.j2             # NetBird management config
-│   └── relay.env.j2                   # Relay environment variables
-│
-├── static/                            # Frontend files
-│   ├── index.html                     # Main dashboard
-│   ├── css/
-│   │   └── styles.css                 # Custom styles
-│   └── js/
-│       └── app.js                     # Frontend JavaScript
-│
-├── tests/                             # Unit & integration tests
-│   ├── __init__.py
-│   ├── test_customer_api.py
-│   ├── test_deployment.py
-│   └── test_docker_service.py
-│
-└── docs/                              # Additional documentation
-    ├── API.md                         # API documentation
-    ├── DEPLOYMENT.md                  # Deployment guide
-    └── TROUBLESHOOTING.md             # Common issues
-```
-
-## Key Features to Implement
-
-### 1. Customer Management
-- **Create Customer**: Web form → API → Deploy NetBird instance
-- **List Customers**: Paginated table with search/filter
-- **Customer Details**: Status, logs, setup URL, actions
-- **Delete Customer**: Remove all containers, NPM entries, data
-
-### 2. Automated Deployment
-**Workflow when creating customer:**
-1. Validate inputs (subdomain unique, email valid)
-2. Allocate ports (Management internal, Relay UDP public)
-3. Generate configs from Jinja2 templates
-4. Create instance directory: `/opt/netbird-instances/kunde{id}/`
-5. Write `docker-compose.yml`, `management.json`, `relay.env`
-6. Start Docker containers via Docker SDK
-7. Wait for health checks (max 60s)
-8. Create NPM proxy hosts via API (with SSL)
-9. Update database with deployment info
-10. Return setup URL to user
-
-### 3. Web-Based Configuration
-**All settings in database, editable via UI:**
-- Base Domain
-- Admin Email  
-- NPM API URL & Token
-- NetBird Docker Images
-- Port Ranges
-- Data Directories
-
-No manual config file editing required!
-
-### 4. Nginx Proxy Manager Integration
-**Per customer, create proxy host:**
-- Domain: `{subdomain}.{base_domain}`
-- Forward to: `netbird-kunde{id}-dashboard:80`
-- SSL: Automatic Let's Encrypt
-- Advanced config: Route `/api/*` to management, `/signalexchange.*` to signal, `/relay` to relay
-
-### 5. Port Management
-**UDP Ports for STUN/Relay (publicly accessible):**
-- Customer 1: 3478
-- Customer 2: 3479
-- ...
-- Customer 100: 3577
-
-**Algorithm:**
-- Find next available port starting from 3478
-- Check if port not in use (via `netstat` or database)
-- Assign to customer
-- Store in database
-
-### 6. Monitoring & Health Checks
-- Container status (running/stopped/failed)
-- Health check endpoints (HTTP checks to management service)
-- Resource usage (via Docker stats API)
-- Relay connectivity test
-
-## Database Schema
-
-### Table: customers
-```sql
-CREATE TABLE customers (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    name TEXT NOT NULL,
-    company TEXT,
-    subdomain TEXT UNIQUE NOT NULL,
-    email TEXT NOT NULL,
-    max_devices INTEGER DEFAULT 20,
-    notes TEXT,
-    status TEXT DEFAULT 'active' CHECK(status IN ('active', 'inactive', 'deploying', 'error')),
-    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
-);
-```
-
-### Table: deployments
-```sql
-CREATE TABLE deployments (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    customer_id INTEGER NOT NULL UNIQUE,
-    container_prefix TEXT NOT NULL,
-    relay_udp_port INTEGER UNIQUE NOT NULL,
-    npm_proxy_id INTEGER,
-    relay_secret TEXT NOT NULL,
-    setup_url TEXT,
-    deployment_status TEXT DEFAULT 'pending' CHECK(deployment_status IN ('pending', 'running', 'stopped', 'failed')),
-    deployed_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    last_health_check TIMESTAMP,
-    FOREIGN KEY (customer_id) REFERENCES customers(id) ON DELETE CASCADE
-);
-```
-
-### Table: system_config
-```sql
-CREATE TABLE system_config (
-    id INTEGER PRIMARY KEY CHECK (id = 1),
-    base_domain TEXT NOT NULL,
-    admin_email TEXT NOT NULL,
-    npm_api_url TEXT NOT NULL,
-    npm_api_token_encrypted TEXT NOT NULL,
-    netbird_management_image TEXT DEFAULT 'netbirdio/management:latest',
-    netbird_signal_image TEXT DEFAULT 'netbirdio/signal:latest',
-    netbird_relay_image TEXT DEFAULT 'netbirdio/relay:latest',
-    netbird_dashboard_image TEXT DEFAULT 'netbirdio/dashboard:latest',
-    data_dir TEXT DEFAULT '/opt/netbird-instances',
-    docker_network TEXT DEFAULT 'npm-network',
-    relay_base_port INTEGER DEFAULT 3478,
-    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
-);
-```
-
-### Table: deployment_logs
-```sql
-CREATE TABLE deployment_logs (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    customer_id INTEGER NOT NULL,
-    action TEXT NOT NULL,
-    status TEXT NOT NULL CHECK(status IN ('success', 'error', 'info')),
-    message TEXT,
-    details TEXT,
-    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    FOREIGN KEY (customer_id) REFERENCES customers(id) ON DELETE CASCADE
-);
-```
-
-### Table: users (simple auth)
-```sql
-CREATE TABLE users (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    username TEXT UNIQUE NOT NULL,
-    password_hash TEXT NOT NULL,
-    email TEXT,
-    is_active BOOLEAN DEFAULT TRUE,
-    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
-);
-```
-
-## API Endpoints to Implement
-
-### Authentication
-```
-POST   /api/auth/login          # Login and get token
-POST   /api/auth/logout         # Logout
-GET    /api/auth/me             # Get current user
-POST   /api/auth/change-password
-```
-
-### Customers
-```
-POST   /api/customers           # Create + auto-deploy
-GET    /api/customers           # List all (pagination, search, filter)
-GET    /api/customers/{id}      # Get details
-PUT    /api/customers/{id}      # Update
-DELETE /api/customers/{id}      # Delete + cleanup
-```
-
-### Deployments
-```
-POST   /api/customers/{id}/deploy     # Manual deploy
-POST   /api/customers/{id}/start      # Start containers
-POST   /api/customers/{id}/stop       # Stop containers
-POST   /api/customers/{id}/restart    # Restart containers
-GET    /api/customers/{id}/logs       # Get container logs
-GET    /api/customers/{id}/health     # Health check
-```
-
-### Monitoring
-```
-GET    /api/monitoring/status          # System overview
-GET    /api/monitoring/customers       # All customers status
-GET    /api/monitoring/resources       # Host resource usage
-```
-
-### Settings
-```
-GET    /api/settings/system            # Get system config
-PUT    /api/settings/system            # Update system config
-GET    /api/settings/test-npm          # Test NPM connectivity
-```
-
-## Docker Compose Template (Per Customer)
-
-```yaml
-version: '3.8'
-
-networks:
-  npm-network:
-    external: true
-
-services:
-  netbird-management:
-    image: {{ netbird_management_image }}
-    container_name: netbird-kunde{{ customer_id }}-management
-    restart: unless-stopped
-    networks:
-      - npm-network
-    volumes:
-      - {{ instance_dir }}/data/management:/var/lib/netbird
-      - {{ instance_dir }}/management.json:/etc/netbird/management.json
-    command: ["--port", "80", "--log-file", "console", "--log-level", "info",
-              "--single-account-mode-domain={{ subdomain }}.{{ base_domain }}",
-              "--dns-domain={{ subdomain }}.{{ base_domain }}"]
-
-  netbird-signal:
-    image: {{ netbird_signal_image }}
-    container_name: netbird-kunde{{ customer_id }}-signal
-    restart: unless-stopped
-    networks:
-      - npm-network
-    volumes:
-      - {{ instance_dir }}/data/signal:/var/lib/netbird
-
-  netbird-relay:
-    image: {{ netbird_relay_image }}
-    container_name: netbird-kunde{{ customer_id }}-relay
-    restart: unless-stopped
-    networks:
-      - npm-network
-    ports:
-      - "{{ relay_udp_port }}:3478/udp"
-    env_file:
-      - {{ instance_dir }}/relay.env
-    environment:
-      - NB_ENABLE_STUN=true
-      - NB_STUN_PORTS=3478
-      - NB_LISTEN_ADDRESS=:80
-      - NB_EXPOSED_ADDRESS=rels://{{ subdomain }}.{{ base_domain }}:443
-      - NB_AUTH_SECRET={{ relay_secret }}
-
-  netbird-dashboard:
-    image: {{ netbird_dashboard_image }}
-    container_name: netbird-kunde{{ customer_id }}-dashboard
-    restart: unless-stopped
-    networks:
-      - npm-network
-    environment:
-      - NETBIRD_MGMT_API_ENDPOINT=https://{{ subdomain }}.{{ base_domain }}
-      - NETBIRD_MGMT_GRPC_API_ENDPOINT=https://{{ subdomain }}.{{ base_domain }}
-```
-
-## Frontend Requirements
-
-### Main Dashboard (index.html)
-**Layout:**
-- Navbar: Logo, "New Customer" button, User menu (settings, logout)
-- Stats Cards: Total customers, Active, Inactive, Errors
-- Customer Table: Name, Subdomain, Status, Devices, Actions
-- Pagination: 25 customers per page
-- Search bar: Filter by name, subdomain, email
-- Status filter dropdown: All, Active, Inactive, Error
-
-**Customer Table Actions:**
-- View Details (→ customer detail page)
-- Start/Stop/Restart (inline buttons)
-- Delete (with confirmation modal)
-
-### Customer Detail Page
-**Tabs:**
-1. **Info**: All customer details, edit button
-2. **Deployment**: Status, Setup URL (copy button), Container status
-3. **Logs**: Real-time logs from all containers (auto-refresh)
-4. **Health**: Health check results, relay connectivity test
-
-### Settings Page
-**Tabs:**
-1. **System Configuration**: All system settings, save button
-2. **NPM Integration**: API URL, Token, Test button
-3. **Images**: NetBird Docker image tags
-4. **Security**: Change admin password
-
-### Modal Dialogs
-- New/Edit Customer Form
-- Delete Confirmation
-- Deployment Progress (with spinner)
-- Error Display
-
-## Security Requirements
-
-1. **Password Hashing**: Use bcrypt for admin password
-2. **Secret Encryption**: Encrypt NPM token and relay secrets with Fernet
-3. **Input Validation**: Pydantic models for all API inputs
-4. **SQL Injection Prevention**: Use SQLAlchemy ORM (no raw queries)
-5. **CSRF Protection**: Token-based authentication
-6. **Rate Limiting**: Prevent brute force on login endpoint
-
-## Error Handling
-
-All operations should have comprehensive error handling:
-
-```python
-try:
-    # Deploy customer
-    result = deploy_customer(customer_id)
-except DockerException as e:
-    # Rollback: Stop containers
-    # Log error
-    # Update status to 'failed'
-    # Return error to user
-except NPMException as e:
-    # Rollback: Remove containers
-    # Log error
-    # Update status to 'failed'
-except Exception as e:
-    # Generic rollback
-    # Log error
-    # Alert admin
-```
-
-## Testing Requirements
-
-1. **Unit Tests**: All services (docker_service, npm_service, etc.)
-2. **Integration Tests**: Full deployment workflow
-3. **API Tests**: All endpoints with different scenarios
-4. **Mock External Dependencies**: Docker API, NPM API
-
-## Deployment Process
-
-1. Clone repository
-2. Run `./install.sh`
-3. Access `http://server-ip:8000`
-4. Complete setup wizard
-5. Deploy first customer
-
-## System Requirements Documentation
-
-**Include in README.md:**
-
-### For 100 Customers:
-- **CPU**: 16 cores (minimum 8)
-- **RAM**: 64 GB (minimum) - 128 GB (recommended)
-  - Formula: `(100 customers × 600 MB) + 8 GB overhead = 68 GB`
-- **Disk**: 500 GB SSD (minimum) - 1 TB recommended
-- **Network**: 1 Gbps dedicated connection
-- **OS**: Ubuntu 22.04 LTS or 24.04 LTS
-
-### Port Requirements:
-- **TCP 8000**: Web UI
-- **UDP 3478-3577**: Relay/STUN (100 ports for 100 customers)
-
-## Success Criteria
-
-✅ One-command installation via `install.sh`
-✅ Web-based configuration (no manual file editing)
-✅ Customer deployment < 2 minutes
-✅ All settings in database
-✅ Automatic NPM integration
-✅ Comprehensive error handling
-✅ Clean, professional UI
-✅ Full API documentation (auto-generated)
-✅ Health monitoring
-✅ Easy to deploy on fresh Ubuntu VM
-
-## Special Notes for Claude Code
-
-- **Use type hints** throughout Python code
-- **Document all functions** with docstrings
-- **Follow PEP 8** style guidelines
-- **Create modular code**: Each service should be independently testable
-- **Use async/await** where appropriate (FastAPI endpoints)
-- **Provide comprehensive comments** for complex logic
-- **Include error messages** that help users troubleshoot
-
-## File Priorities
-
-Create in this order:
-1. Basic structure (directories, requirements.txt, Dockerfile, docker-compose.yml)
-2. Database models and setup (models.py, database.py)
-3. Core services (docker_service.py, port_manager.py)
-4. API routers (start with customers.py)
-5. NPM integration (npm_service.py)
-6. Templates (Jinja2 files)
-7. Frontend (HTML, CSS, JS)
-8. Installation script
-9. Documentation
-10. Tests
-
-This specification provides everything needed to build a production-ready NetBird MSP Appliance!
diff --git a/PROJECT_SUMMARY.md b/PROJECT_SUMMARY.md
deleted file mode 100644
index 5a3d005..0000000
--- a/PROJECT_SUMMARY.md
+++ /dev/null
@@ -1,240 +0,0 @@
-# NetBird MSP Appliance - Project Summary
-
-## 📦 Was ist enthalten?
-
-Dieses Repository enthält ein **vollständiges, produktionsreifes Multi-Tenant NetBird Management System** für MSPs (Managed Service Provider).
-
-## 🎯 Hauptziel
-
-Ermöglicht MSPs, **100+ isolierte NetBird-Instanzen** für ihre Kunden von einer einzigen Web-Oberfläche aus zu verwalten - komplett in Docker containerisiert und mit einem Befehl deploybar.
-
-## 📁 Repository-Struktur
-
-```
-netbird-msp-appliance/
-├── 📖 README.md                    # Vollständige Dokumentation
-├── 🚀 QUICKSTART.md                # 10-Minuten Quick Start
-├── 🏗️  ARCHITECTURE.md             # System-Architektur
-├── 💻 VS_CODE_SETUP.md             # Guide für VS Code + Claude Code
-├── 📋 CLAUDE_CODE_SPEC.md          # Vollständige Spezifikation für Claude Code
-├── 🛠️  install.sh                   # One-Click Installation
-├── 🐳 docker-compose.yml           # Docker Container Definition
-├── 📦 Dockerfile                   # Application Container
-├── 📝 requirements.txt             # Python Dependencies
-├── ⚙️  .env.example                 # Environment Variables Template
-├── 📜 LICENSE                      # MIT License
-├── 🙋 CONTRIBUTING.md              # Contribution Guidelines
-│
-├── app/                            # Python FastAPI Application
-│   ├── main.py                     # Entry Point
-│   ├── models.py                   # Database Models (ERSTELLT)
-│   ├── database.py                 # DB Setup (ERSTELLT)
-│   ├── routers/                    # API Endpoints (ZU ERSTELLEN)
-│   ├── services/                   # Business Logic (ZU ERSTELLEN)
-│   └── utils/                      # Utilities (ZU ERSTELLEN)
-│
-├── templates/                      # Jinja2 Templates (ZU ERSTELLEN)
-├── static/                         # Frontend Files (ZU ERSTELLEN)
-└── tests/                          # Tests (ZU ERSTELLEN)
-```
-
-## ✅ Was ist bereits fertig?
-
-- ✅ **Dokumentation**: README, Quickstart, Architecture Guide
-- ✅ **Docker Setup**: docker-compose.yml, Dockerfile
-- ✅ **Installation Script**: install.sh (funktionsbereit)
-- ✅ **Database Models**: Vollständige SQLAlchemy Models
-- ✅ **Database Setup**: Database configuration
-- ✅ **FastAPI Entry Point**: main.py mit Routing-Struktur
-- ✅ **Claude Code Spezifikation**: Detaillierte Implementierungs-Anleitung
-- ✅ **Environment Template**: .env.example
-- ✅ **Git Setup**: .gitignore
-
-## 🔨 Was muss noch implementiert werden?
-
-Diese Aufgaben sind für **Claude Code** vorbereitet (siehe CLAUDE_CODE_SPEC.md):
-
-### 1. Backend (Python)
-- [ ] **API Routers** (app/routers/):
-  - auth.py - Authentication
-  - customers.py - Customer CRUD
-  - deployments.py - Deployment Management
-  - monitoring.py - Status & Health
-  - settings.py - System Config
-
-- [ ] **Services** (app/services/):
-  - docker_service.py - Docker Container Management
-  - npm_service.py - Nginx Proxy Manager API
-  - netbird_service.py - Deployment Orchestration
-  - port_manager.py - UDP Port Allocation
-
-- [ ] **Utils** (app/utils/):
-  - config.py - Configuration Management
-  - security.py - Encryption, Hashing
-  - validators.py - Input Validation
-
-### 2. Templates (Jinja2)
-- [ ] docker-compose.yml.j2 - Per-Customer Docker Compose
-- [ ] management.json.j2 - NetBird Management Config
-- [ ] relay.env.j2 - Relay Environment Variables
-
-### 3. Frontend (HTML/CSS/JS)
-- [ ] index.html - Main Dashboard
-- [ ] styles.css - Custom Styling
-- [ ] app.js - Frontend Logic
-
-### 4. Tests
-- [ ] Unit Tests for Services
-- [ ] Integration Tests
-- [ ] API Tests
-
-## 🚀 Wie geht es weiter?
-
-### Option 1: Mit Claude Code (EMPFOHLEN)
-
-1. **Öffne das Projekt in VS Code**:
-   ```bash
-   cd netbird-msp-appliance
-   code .
-   ```
-
-2. **Installiere Claude Code Plugin** in VS Code
-
-3. **Folge der Anleitung** in `VS_CODE_SETUP.md`
-
-4. **Starte Claude Code** und sage:
-   ```
-   Bitte lies CLAUDE_CODE_SPEC.md und implementiere 
-   das komplette NetBird MSP Appliance Projekt.
-   ```
-
-5. **Claude Code wird**:
-   - Alle fehlenden Dateien erstellen
-   - Backend implementieren
-   - Frontend bauen
-   - Tests hinzufügen
-   - Alles dokumentieren
-
-**Erwartete Entwicklungszeit: 2-3 Stunden**
-
-### Option 2: Manuell entwickeln
-
-Folge der Struktur in `CLAUDE_CODE_SPEC.md` und implementiere Schritt für Schritt:
-
-1. Backend Services
-2. API Routers
-3. Templates
-4. Frontend
-5. Tests
-
-## 💾 System-Anforderungen
-
-### Für 100 Kunden:
-
-| Komponente | Minimum | Empfohlen |
-|------------|---------|-----------|
-| **CPU** | 8 Cores | 16 Cores |
-| **RAM** | 64 GB | 128 GB |
-| **Disk** | 500 GB SSD | 1 TB NVMe |
-| **OS** | Ubuntu 22.04 | Ubuntu 24.04 |
-| **Network** | 100 Mbps | 1 Gbps |
-
-### Benötigte Ports:
-- **TCP 8000**: Web UI
-- **UDP 3478-3577**: NetBird Relay (100 Ports für 100 Kunden)
-
-### Berechnung:
-```
-RAM pro Kunde: ~600 MB
-100 Kunden: 60 GB
-+ OS & Appliance: 8 GB
-= 68 GB total (64 GB Minimum)
-```
-
-## 🔧 Installation (nach Entwicklung)
-
-```bash
-# 1. Repository clonen
-git clone https://github.com/yourusername/netbird-msp-appliance.git
-cd netbird-msp-appliance
-
-# 2. Installer ausführen
-chmod +x install.sh
-sudo ./install.sh
-
-# 3. Web UI öffnen
-# Browser: http://YOUR_SERVER_IP:8000
-# Login mit Credentials aus Installer-Output
-```
-
-## 📊 Features
-
-- ✅ **Multi-Tenant**: 100+ isolierte NetBird-Instanzen
-- ✅ **Web-basierte Konfiguration**: Keine Config-Files manuell editieren
-- ✅ **Automatisches Deployment**: < 2 Minuten pro Kunde
-- ✅ **NPM Integration**: Automatische SSL-Zertifikate
-- ✅ **Monitoring**: Health Checks, Container Status, Logs
-- ✅ **Docker-basiert**: Einfaches Update und Wartung
-- ✅ **One-Click Installation**: Ein Befehl, fertig
-
-## 🔐 Sicherheit
-
-- Passwort-Hashing mit bcrypt
-- Token-Verschlüsselung mit Fernet
-- Input-Validation via Pydantic
-- SQL-Injection-Schutz via SQLAlchemy ORM
-- Rate-Limiting für APIs
-
-## 📚 Dokumentation
-
-| Dokument | Zweck |
-|----------|-------|
-| README.md | Vollständige Dokumentation |
-| QUICKSTART.md | 10-Minuten Quick Start |
-| ARCHITECTURE.md | System-Architektur Details |
-| CLAUDE_CODE_SPEC.md | Implementierungs-Spezifikation |
-| VS_CODE_SETUP.md | VS Code + Claude Code Guide |
-| CONTRIBUTING.md | Contribution Guidelines |
-
-## 🎓 Learning Resources
-
-Dieses Projekt ist auch ein **exzellentes Lernprojekt** für:
-- FastAPI Backend Development
-- Docker Container Orchestration
-- Multi-Tenant SaaS Architecture
-- Nginx Proxy Manager Integration
-- SQLAlchemy ORM
-- Jinja2 Templating
-- Bootstrap 5 Frontend
-
-## 🤝 Support & Community
-
-- **Issues**: GitHub Issues für Bugs und Features
-- **Discussions**: GitHub Discussions für Fragen
-- **Email**: support@yourdomain.com
-
-## 📝 License
-
-MIT License - siehe LICENSE Datei
-
-## 🙏 Credits
-
-- **NetBird Team** - für das großartige Open-Source VPN
-- **FastAPI** - für das moderne Python Framework
-- **Nginx Proxy Manager** - für einfaches Reverse Proxy Management
-
----
-
-## 📞 Next Steps
-
-1. **Entwicklung starten**: Öffne VS_CODE_SETUP.md
-2. **Claude Code nutzen**: Folge der Anleitung
-3. **Testen**: Lokal mit Docker testen
-4. **Deployen**: Auf VM installieren
-5. **Ersten Kunden anlegen**: Web UI nutzen
-
-**Viel Erfolg mit deiner NetBird MSP Appliance! 🚀**
-
----
-
-*Erstellt für einfaches Deployment und perfekte Integration mit Claude Code*
diff --git a/QUICKSTART.md b/QUICKSTART.md
deleted file mode 100644
index 93cc852..0000000
--- a/QUICKSTART.md
+++ /dev/null
@@ -1,148 +0,0 @@
-# 🚀 NetBird MSP Appliance - Quick Start Guide
-
-Get up and running in 10 minutes!
-
-## Prerequisites
-
-- Ubuntu 22.04 or 24.04 LTS
-- Root access
-- 64GB RAM minimum (for 100 customers)
-- 500GB SSD minimum
-- Domain with wildcard DNS (*.yourdomain.com)
-
-## Installation (3 commands!)
-
-```bash
-# 1. Clone repository
-git clone https://github.com/yourusername/netbird-msp-appliance.git
-cd netbird-msp-appliance
-
-# 2. Run installer
-chmod +x install.sh
-sudo ./install.sh
-
-# 3. Access web UI
-# Open: http://YOUR_SERVER_IP:8000
-# Default login will be shown at end of installation
-```
-
-## Post-Installation Configuration
-
-### 1. First Login
-- Use credentials displayed after installation
-- **CHANGE PASSWORD IMMEDIATELY** in Settings
-
-### 2. Configure System (Settings → System Configuration)
-
-```yaml
-Base Domain: yourdomain.com
-Admin Email: admin@yourdomain.com
-NPM API URL: http://nginx-proxy-manager:81/api
-NPM API Token: <get from NPM interface>
-```
-
-### 3. Configure Firewall
-
-```bash
-# Allow web interface
-sudo ufw allow 8000/tcp
-
-# Allow NetBird relay ports (for up to 100 customers)
-sudo ufw allow 3478:3577/udp
-
-# Apply rules
-sudo ufw reload
-```
-
-### 4. Get NPM API Token
-
-1. Access your Nginx Proxy Manager
-2. Go to Users → Edit your user
-3. Copy the API token
-4. Paste in NetBird MSP Appliance Settings
-
-## Deploy Your First Customer
-
-1. Click "New Customer"
-2. Fill in:
-   - Name: "Test Customer"
-   - Subdomain: "test" (becomes test.yourdomain.com)
-   - Email: customer@example.com
-   - Max Devices: 20
-3. Click "Deploy"
-4. Wait 60-90 seconds
-5. Done! Share the setup URL with your customer
-
-## Verify DNS Configuration
-
-Before deploying customers, ensure wildcard DNS works:
-
-```bash
-# Test DNS resolution
-nslookup test.yourdomain.com
-# Should return your server IP
-
-# Or
-dig test.yourdomain.com
-```
-
-## Troubleshooting
-
-### Customer deployment fails
-```bash
-# Check logs
-docker logs netbird-msp-appliance
-
-# Check NPM connectivity
-curl -I http://nginx-proxy-manager:81/api
-```
-
-### NPM not accessible
-Make sure NPM is on the same Docker network:
-```bash
-docker network connect npm-network <npm-container-name>
-```
-
-### Ports already in use
-```bash
-# Check what's using port 8000
-sudo lsof -i :8000
-
-# Kill process if needed
-sudo kill -9 <PID>
-```
-
-## Next Steps
-
-- Read full [README.md](README.md) for details
-- Check [CONTRIBUTING.md](CONTRIBUTING.md) to contribute
-- Join discussions for support
-
-## Quick Commands
-
-```bash
-# View logs
-docker logs -f netbird-msp-appliance
-
-# Restart appliance
-docker restart netbird-msp-appliance
-
-# Stop all customer instances
-docker stop $(docker ps -q --filter "name=netbird-kunde")
-
-# Backup database
-docker exec netbird-msp-appliance cp /app/data/netbird_msp.db /app/data/backup-$(date +%Y%m%d).db
-```
-
-## System Requirements Calculator
-
-| Customers | RAM | CPU | Disk |
-|-----------|-----|-----|------|
-| 25        | 16GB | 4 cores | 200GB |
-| 50        | 32GB | 8 cores | 350GB |
-| 100       | 64GB | 16 cores | 500GB |
-| 200       | 128GB | 32 cores | 1TB |
-
-Formula: `(Customers × 600MB) + 8GB (OS + Appliance)`
-
-Happy MSP-ing! 🎉
diff --git a/VS_CODE_SETUP.md b/VS_CODE_SETUP.md
deleted file mode 100644
index 9ec7d73..0000000
--- a/VS_CODE_SETUP.md
+++ /dev/null
@@ -1,215 +0,0 @@
-# Visual Studio Code + Claude Code Setup Guide
-
-## Für den Entwicklungsprozess mit Claude Code Plugin
-
-### Schritt 1: Repository vorbereiten
-
-```bash
-# Repository in VS Code öffnen
-cd /path/to/netbird-msp-appliance
-code .
-```
-
-### Schritt 2: Claude Code Plugin installieren
-
-1. Öffne VS Code Extensions (Ctrl+Shift+X)
-2. Suche nach "Claude Code"
-3. Installiere das Plugin
-4. Authentifiziere dich mit deinem Anthropic Account
-
-### Schritt 3: Claude Code verwenden
-
-#### Hauptaufgabe an Claude geben:
-
-Öffne Claude Code Chat und schicke folgende Nachricht:
-
-```
-Bitte lies die Datei CLAUDE_CODE_SPEC.md und implementiere das komplette NetBird MSP Appliance Projekt gemäß den Spezifikationen.
-
-Prioritäten:
-1. Erstelle zuerst die komplette Dateistruktur
-2. Implementiere die Datenbank-Modelle und API-Routers
-3. Baue die Services (docker_service, npm_service, netbird_service)
-4. Erstelle die Jinja2 Templates
-5. Baue das Frontend (HTML/CSS/JS)
-6. Füge Tests hinzu
-
-Achte besonders auf:
-- Type hints in allen Python-Funktionen
-- Comprehensive Error Handling
-- Docstrings für alle Funktionen
-- Clean Code und Modularität
-- Security Best Practices
-
-Beginne mit der Implementierung!
-```
-
-### Schritt 4: Iteratives Entwickeln
-
-Claude Code wird Schritt für Schritt:
-
-1. **Struktur erstellen**
-   - Alle Verzeichnisse anlegen
-   - Basis-Dateien erstellen
-   - Dependencies auflisten
-
-2. **Backend implementieren**
-   - Database Models
-   - API Routers
-   - Services
-   - Utils
-
-3. **Templates erstellen**
-   - docker-compose.yml.j2
-   - management.json.j2
-   - relay.env.j2
-
-4. **Frontend bauen**
-   - HTML Dashboard
-   - CSS Styling
-   - JavaScript Logic
-
-5. **Testen & Debugging**
-   - Unit Tests
-   - Integration Tests
-   - Manuelle Tests
-
-### Schritt 5: Spezifische Anweisungen
-
-Du kannst Claude Code auch spezifische Aufgaben geben:
-
-```
-"Implementiere jetzt den docker_service.py mit allen Funktionen 
-zum Starten, Stoppen und Überwachen von Docker-Containern"
-```
-
-```
-"Erstelle das Frontend Dashboard mit Bootstrap 5 und mache es 
-responsive für Mobile/Tablet/Desktop"
-```
-
-```
-"Füge comprehensive Error Handling zum Deployment-Prozess hinzu 
-mit automatischem Rollback bei Fehlern"
-```
-
-### Schritt 6: Code Review
-
-Nach jeder größeren Implementierung:
-
-```
-"Bitte reviewe den Code in app/services/docker_service.py und 
-verbessere Error Handling und füge Type Hints hinzu"
-```
-
-### Schritt 7: Testing
-
-```
-"Erstelle Unit Tests für alle Services und API-Endpunkte"
-```
-
-### Schritt 8: Dokumentation
-
-```
-"Erstelle API-Dokumentation und ergänze die README mit 
-Deployment-Beispielen"
-```
-
-## Tipps für effektive Zusammenarbeit mit Claude Code
-
-### ✅ Gute Anweisungen:
-- "Implementiere X gemäß der Spezifikation in CLAUDE_CODE_SPEC.md"
-- "Füge Error Handling für Y hinzu"
-- "Refactore Z für bessere Wartbarkeit"
-- "Erstelle Tests für Modul A"
-
-### ❌ Vermeiden:
-- Zu vage Anweisungen ohne Kontext
-- Mehrere komplexe Aufgaben gleichzeitig
-- Widersprüchliche Requirements
-
-## Debugging mit Claude Code
-
-```
-"Der Deployment-Prozess schlägt fehl mit diesem Fehler: [Fehlermeldung]. 
-Bitte analysiere das Problem und fixe es."
-```
-
-```
-"Die NPM-Integration funktioniert nicht. Logs zeigen: [Logs]. 
-Was ist das Problem?"
-```
-
-## Projekt-Struktur prüfen
-
-Claude Code kann die Struktur validieren:
-
-```
-"Überprüfe, ob alle Dateien gemäß CLAUDE_CODE_SPEC.md 
-vorhanden und korrekt strukturiert sind"
-```
-
-## Abschließende Checks
-
-```
-"Führe folgende Checks durch:
-1. Alle Dependencies in requirements.txt?
-2. Docker-Compose gültig?
-3. Alle Environment Variables dokumentiert?
-4. README vollständig?
-5. Installation Script funktional?"
-```
-
-## Deployment vorbereiten
-
-```
-"Bereite das Projekt für Production Deployment vor:
-1. Sicherheits-Audit
-2. Performance-Optimierungen
-3. Logging verbessern
-4. Monitoring Endpoints hinzufügen"
-```
-
----
-
-## Erwartete Entwicklungszeit mit Claude Code
-
-- **Basis-Struktur**: 10-15 Minuten
-- **Backend (APIs + Services)**: 30-45 Minuten  
-- **Templates**: 10-15 Minuten
-- **Frontend**: 30-45 Minuten
-- **Tests**: 20-30 Minuten
-- **Dokumentation & Polish**: 15-20 Minuten
-
-**Gesamt: ~2-3 Stunden** für ein vollständiges, produktionsreifes System!
-
----
-
-## Nach der Entwicklung
-
-### Lokales Testen:
-
-```bash
-# Docker Compose starten
-docker compose up -d
-
-# Logs prüfen
-docker logs -f netbird-msp-appliance
-
-# In Browser öffnen
-http://localhost:8000
-```
-
-### Auf VM deployen:
-
-```bash
-# Repository auf VM clonen
-git clone https://github.com/yourusername/netbird-msp-appliance.git
-cd netbird-msp-appliance
-
-# Installer ausführen
-chmod +x install.sh
-sudo ./install.sh
-```
-
-Viel Erfolg! 🚀