feat(Production): Complete production deployment infrastructure

- Add comprehensive health check system with multiple endpoints
- Add Prometheus metrics endpoint
- Add production logging configurations (5 strategies)
- Add complete deployment documentation suite:
  * QUICKSTART.md - 30-minute deployment guide
  * DEPLOYMENT_CHECKLIST.md - Printable verification checklist
  * DEPLOYMENT_WORKFLOW.md - Complete deployment lifecycle
  * PRODUCTION_DEPLOYMENT.md - Comprehensive technical reference
  * production-logging.md - Logging configuration guide
  * ANSIBLE_DEPLOYMENT.md - Infrastructure as Code automation
  * README.md - Navigation hub
  * DEPLOYMENT_SUMMARY.md - Executive summary
- Add deployment scripts and automation
- Add DEPLOYMENT_PLAN.md - Concrete plan for immediate deployment
- Update README with production-ready features

All production infrastructure is now complete and ready for deployment.

.env.example

@@ -5,21 +5,31 @@ APP_ENV=development
 APP_DEBUG=true
 
 # API-Konfiguration
-RAPIDMAIL_USERNAME=3f60a5c15c3d49c631d0e75b7c1090a3859423a7
-RAPIDMAIL_PASSWORD=572d25dc36e620f14c89e9c75c02c1f3794ba3c0
-RAPIDMAIL_DEFAULT_LIST_ID=776
+# SECURITY: Replace with your actual RapidMail credentials
+RAPIDMAIL_USERNAME=your_rapidmail_username_here
+RAPIDMAIL_PASSWORD=your_rapidmail_password_here
+RAPIDMAIL_DEFAULT_LIST_ID=your_list_id_here
 
 # Shopify API-Konfiguration
-SHOPIFY_SHOP_DOMAIN=michaelschiemer.myshopify.com
-SHOPIFY_ACCESS_TOKEN=shpat_123456789abcdef
+# SECURITY: Replace with your actual Shopify credentials
+SHOPIFY_SHOP_DOMAIN=yourstore.myshopify.com
+SHOPIFY_ACCESS_TOKEN=shpat_your_access_token_here
 SHOPIFY_API_VERSION=2024-04
 
-# Datenbank-Konfiguration (falls benötigt)
-# DB_HOST=localhost
-# DB_PORT=3306
-# DB_DATABASE=meine_datenbank
-# DB_USERNAME=root
-# DB_PASSWORD=secret
+# PostgreSQL Datenbank-Konfiguration
+# SECURITY: Replace with your actual database credentials
+DB_DRIVER=pgsql
+DB_HOST=db
+DB_PORT=5432
+DB_DATABASE=michaelschiemer
+DB_USERNAME=postgres
+DB_PASSWORD=your_secure_database_password_here
+DB_CHARSET=utf8
+DB_SCHEMA=public
+
+# PostgreSQL Connection Pooling (optional)
+DB_POOL_MIN=2
+DB_POOL_MAX=10
 
 # Redis-Konfiguration (falls benötigt)
 # REDIS_HOST=redis
@@ -43,6 +53,11 @@ RATE_LIMIT_AUTH_WINDOW=300
 RATE_LIMIT_API=30
 RATE_LIMIT_API_WINDOW=60
 
+# N+1 Detection Machine Learning Konfiguration
+NPLUSONE_ML_ENABLED=true
+NPLUSONE_ML_TIMEOUT_MS=5000
+NPLUSONE_ML_CONFIDENCE_THRESHOLD=60.0
+
 # OAuth Provider Konfiguration
 APP_URL=https://localhost
 
@@ -65,4 +80,8 @@ TIDAL_REDIRECT_URI=https://localhost/oauth/tidal/callback
 
 # Vault Configuration
 # Generate with: php console.php vault:generate-key
-# VAULT_ENCRYPTION_KEY=base64_encoded_key_here
+# VAULT_ENCRYPTION_KEY=base64_encoded_key_here
+
+# Filesystem Performance (caching enabled by default)
+# Set to true only for debugging performance issues
+# FILESYSTEM_DISABLE_CACHE=false