feat: Produktions-Deployment mit Nginx und SSL

- docker-compose-prod.yml: Produktionsumgebung mit Nginx Reverse Proxy
- nginx/nginx.conf: Optimierte Nginx-Konfiguration mit SSL und Sicherheits-Headers
- Rate Limiting für API-Endpunkte (10/s) und Login (5/min)
- Automatische SSL-Zertifikate via Let's Encrypt/Certbot
- Gzip-Kompression und Performance-Optimierungen

Setup-Scripts:
- scripts/setup-ssl.sh: Bash-Script für Linux/macOS
- scripts/setup-ssl.ps1: PowerShell-Script für Windows
- Automatische Domain-Konfiguration aus .env (DOMAIN, ADMIN_EMAIL)
- Ein-Klick-Setup für SSL-Zertifikate

Dokumentation:
- docs/production-deployment.md: Vollständige Deployment-Anleitung
- Troubleshooting, Monitoring, Backup-Strategien
- Sicherheitsempfehlungen und Best Practices

Features:
- Automatische SSL-Zertifikat-Erneuerung (alle 12h)
- HSTS, CSP, XSS-Schutz
- Health Checks und Monitoring
- Persistente Daten über Docker Volumes

nginx/nginx.conf

@@ -0,0 +1,164 @@
+# Nginx Hauptkonfiguration für Stargirlnails Kiel
+# Optimiert für Produktionsumgebung
+
+user nginx;
+worker_processes auto;
+error_log /var/log/nginx/error.log warn;
+pid /var/run/nginx.pid;
+
+events {
+    worker_connections 1024;
+    use epoll;
+    multi_accept on;
+}
+
+http {
+    include /etc/nginx/mime.types;
+    default_type application/octet-stream;
+
+    # Logging
+    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
+                    '$status $body_bytes_sent "$http_referer" '
+                    '"$http_user_agent" "$http_x_forwarded_for"';
+    access_log /var/log/nginx/access.log main;
+
+    # Performance-Optimierungen
+    sendfile on;
+    tcp_nopush on;
+    tcp_nodelay on;
+    keepalive_timeout 65;
+    types_hash_max_size 2048;
+    client_max_body_size 10M;
+
+    # Gzip-Kompression
+    gzip on;
+    gzip_vary on;
+    gzip_min_length 1024;
+    gzip_proxied any;
+    gzip_comp_level 6;
+    gzip_types
+        text/plain
+        text/css
+        text/xml
+        text/javascript
+        application/json
+        application/javascript
+        application/xml+rss
+        application/atom+xml
+        image/svg+xml;
+
+    # Sicherheits-Header
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-XSS-Protection "1; mode=block" always;
+    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+    add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' data:; connect-src 'self';" always;
+
+    # Rate Limiting
+    limit_req_zone $binary_remote_addr zone=api:10m rate=10r/s;
+    limit_req_zone $binary_remote_addr zone=login:10m rate=5r/m;
+
+    # Upstream für die Anwendung
+    upstream stargirlnails {
+        server stargirlnails:3000;
+    }
+
+    # HTTP-Server (leitet zu HTTPS weiter)
+    server {
+        listen 80;
+        server_name _;
+        
+        # Let's Encrypt Challenge
+        location /.well-known/acme-challenge/ {
+            root /var/www/certbot;
+        }
+        
+        # Alle anderen Anfragen zu HTTPS weiterleiten
+        location / {
+            return 301 https://$host$request_uri;
+        }
+    }
+
+    # HTTPS-Server
+    server {
+        listen 443 ssl http2;
+        server_name _;
+
+        # SSL-Konfiguration
+        ssl_certificate /etc/letsencrypt/live/${DOMAIN}/fullchain.pem;
+        ssl_certificate_key /etc/letsencrypt/live/${DOMAIN}/privkey.pem;
+        
+        # SSL-Optimierungen
+        ssl_protocols TLSv1.2 TLSv1.3;
+        ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384;
+        ssl_prefer_server_ciphers off;
+        ssl_session_cache shared:SSL:10m;
+        ssl_session_timeout 10m;
+        
+        # HSTS
+        add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
+
+        # Proxy-Einstellungen
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Host $host;
+        proxy_set_header X-Forwarded-Port $server_port;
+
+        # Timeouts
+        proxy_connect_timeout 30s;
+        proxy_send_timeout 30s;
+        proxy_read_timeout 30s;
+
+        # API-Endpunkte mit Rate Limiting
+        location /rpc {
+            limit_req zone=api burst=20 nodelay;
+            proxy_pass http://stargirlnails;
+        }
+
+        # Login-Endpunkte mit strengerem Rate Limiting
+        location ~ ^/(login|auth) {
+            limit_req zone=login burst=5 nodelay;
+            proxy_pass http://stargirlnails;
+        }
+
+        # Statische Dateien (Assets)
+        location /static/ {
+            proxy_pass http://stargirlnails;
+            expires 1y;
+            add_header Cache-Control "public, immutable";
+        }
+
+        # Assets-Verzeichnis
+        location /assets/ {
+            proxy_pass http://stargirlnails;
+            expires 1y;
+            add_header Cache-Control "public, immutable";
+        }
+
+        # Favicon
+        location /favicon.ico {
+            proxy_pass http://stargirlnails;
+            expires 1y;
+            add_header Cache-Control "public";
+        }
+
+        # Health Check
+        location /health {
+            proxy_pass http://stargirlnails;
+            access_log off;
+        }
+
+        # Security.txt
+        location /.well-known/security.txt {
+            proxy_pass http://stargirlnails;
+            expires 1d;
+        }
+
+        # Alle anderen Anfragen
+        location / {
+            proxy_pass http://stargirlnails;
+        }
+    }
+}