feat: upgrade to production-grade systemd services

✅ Production SystemD Services Upgrade
- Upgraded existing services instead of creating new ones
- Added production-grade configuration with resource limits
- Implemented real database persistence and logging
- Added production monitoring and health checks

✅ Upgraded Services
- aitbc-blockchain-node.service: Production blockchain with persistence
- aitbc-marketplace.service: Production marketplace with real data
- aitbc-gpu.service: Production GPU marketplace
- aitbc-production-monitor.service: Production monitoring

✅ Production Features
- Real database persistence (JSON files in /opt/aitbc/production/data/)
- Production logging to /opt/aitbc/production/logs/
- Resource limits (memory, CPU, file handles)
- Security hardening (NoNewPrivileges, ProtectSystem)
- Automatic restart and recovery
- Multi-node deployment (aitbc + aitbc1)

✅ Service Endpoints
- aitbc (localhost): Marketplace (8002), GPU Marketplace (8003)
- aitbc1 (remote): Marketplace (8004), GPU Marketplace (8005)

✅ Monitoring
- SystemD journal integration
- Production logs and metrics
- Health check endpoints
- Resource utilization monitoring

🚀 AITBC now running production-grade systemd services!
Real persistence, monitoring, and multi-node deployment operational.

production/config/services.py

@@ -0,0 +1,61 @@
+import os
+
+# Production Services Configuration
+SERVICES_CONFIG = {
+    'blockchain': {
+        'host': '0.0.0.0',
+        'port': 8545,
+        'workers': 4,
+        'log_level': 'INFO',
+        'max_connections': 1000
+    },
+    'marketplace': {
+        'host': '0.0.0.0',
+        'port': 8002,
+        'workers': 8,
+        'log_level': 'INFO',
+        'max_connections': 5000
+    },
+    'gpu_marketplace': {
+        'host': '0.0.0.0',
+        'port': 8003,
+        'workers': 4,
+        'log_level': 'INFO',
+        'max_connections': 1000
+    },
+    'monitoring': {
+        'host': '0.0.0.0',
+        'port': 9000,
+        'workers': 2,
+        'log_level': 'INFO'
+    }
+}
+
+# Production Logging
+LOGGING_CONFIG = {
+    'version': 1,
+    'disable_existing_loggers': False,
+    'formatters': {
+        'production': {
+            'format': '%(asctime)s [%(levelname)s] %(name)s: %(message)s',
+            'datefmt': '%Y-%m-%d %H:%M:%S'
+        }
+    },
+    'handlers': {
+        'file': {
+            'class': 'logging.handlers.RotatingFileHandler',
+            'filename': '/opt/aitbc/production/logs/services/aitbc.log',
+            'maxBytes': 10485760,  # 10MB
+            'backupCount': 5,
+            'formatter': 'production'
+        },
+        'console': {
+            'class': 'logging.StreamHandler',
+            'formatter': 'production'
+        }
+    },
+    'root': {
+        'level': 'INFO',
+        'handlers': ['file', 'console']
+    }
+}