Add sys import to test files and remove obsolete integration tests

- Add sys import to 29 test files across agent-coordinator, blockchain-event-bridge, blockchain-node, and coordinator-api
- Remove apps/blockchain-event-bridge/tests/test_integration.py (obsolete bridge integration tests)
- Remove apps/coordinator-api/tests/test_integration.py (obsolete API integration tests)
- Implement GPU registration in marketplace_gpu.py with GPURegistry model persistence

cli/handlers/bridge.py

@@ -0,0 +1,136 @@
+"""Blockchain event bridge handlers."""
+
+import subprocess
+
+import requests
+
+
+def handle_bridge_health(args):
+    """Health check for blockchain event bridge service."""
+    try:
+        from commands.blockchain_event_bridge import get_config as get_bridge_config
+        config = get_bridge_config()
+        
+        if args.test_mode:
+            print("🏥 Blockchain Event Bridge Health (test mode):")
+            print("✅ Status: healthy")
+            print("📦 Service: blockchain-event-bridge")
+            return
+        
+        bridge_url = getattr(config, "bridge_url", "http://localhost:8204")
+        response = requests.get(f"{bridge_url}/health", timeout=10)
+        
+        if response.status_code == 200:
+            health = response.json()
+            print("🏥 Blockchain Event Bridge Health:")
+            for key, value in health.items():
+                print(f"  {key}: {value}")
+        else:
+            print(f"❌ Health check failed: {response.text}")
+    except Exception as e:
+        print(f"❌ Error checking health: {e}")
+
+
+def handle_bridge_metrics(args):
+    """Get Prometheus metrics from blockchain event bridge service."""
+    try:
+        from commands.blockchain_event_bridge import get_config as get_bridge_config
+        config = get_bridge_config()
+        
+        if args.test_mode:
+            print("📊 Prometheus Metrics (test mode):")
+            print("  bridge_events_total: 103691")
+            print("  bridge_events_processed_total: 103691")
+            return
+        
+        bridge_url = getattr(config, "bridge_url", "http://localhost:8204")
+        response = requests.get(f"{bridge_url}/metrics", timeout=10)
+        
+        if response.status_code == 200:
+            metrics = response.text
+            print("📊 Prometheus Metrics:")
+            print(metrics)
+        else:
+            print(f"❌ Failed to get metrics: {response.text}")
+    except Exception as e:
+        print(f"❌ Error getting metrics: {e}")
+
+
+def handle_bridge_status(args):
+    """Get detailed status of blockchain event bridge service."""
+    try:
+        from commands.blockchain_event_bridge import get_config as get_bridge_config
+        config = get_bridge_config()
+        
+        if args.test_mode:
+            print("📊 Blockchain Event Bridge Status (test mode):")
+            print("✅ Status: running")
+            print("🔔 Subscriptions: blocks, transactions, contract_events")
+            return
+        
+        bridge_url = getattr(config, "bridge_url", "http://localhost:8204")
+        response = requests.get(f"{bridge_url}/", timeout=10)
+        
+        if response.status_code == 200:
+            status = response.json()
+            print("📊 Blockchain Event Bridge Status:")
+            for key, value in status.items():
+                print(f"  {key}: {value}")
+        else:
+            print(f"❌ Failed to get status: {response.text}")
+    except Exception as e:
+        print(f"❌ Error getting status: {e}")
+
+
+def handle_bridge_config(args):
+    """Show current configuration of blockchain event bridge service."""
+    try:
+        from commands.blockchain_event_bridge import get_config as get_bridge_config
+        config = get_bridge_config()
+        
+        if args.test_mode:
+            print("⚙️  Blockchain Event Bridge Configuration (test mode):")
+            print("🔗 Blockchain RPC URL: http://localhost:8006")
+            print("💬 Gossip Backend: redis")
+            return
+        
+        bridge_url = getattr(config, "bridge_url", "http://localhost:8204")
+        response = requests.get(f"{bridge_url}/config", timeout=10)
+        
+        if response.status_code == 200:
+            service_config = response.json()
+            print("⚙️  Blockchain Event Bridge Configuration:")
+            for key, value in service_config.items():
+                print(f"  {key}: {value}")
+        else:
+            print(f"❌ Failed to get config: {response.text}")
+    except Exception as e:
+        print(f"❌ Error getting config: {e}")
+
+
+def handle_bridge_restart(args):
+    """Restart blockchain event bridge service (via systemd)."""
+    try:
+        if args.test_mode:
+            print("🔄 Blockchain event bridge restart triggered (test mode)")
+            print("✅ Restart completed successfully")
+            return
+        
+        result = subprocess.run(
+            ["sudo", "systemctl", "restart", "aitbc-blockchain-event-bridge"],
+            capture_output=True,
+            text=True,
+            timeout=30
+        )
+        
+        if result.returncode == 0:
+            print("🔄 Blockchain event bridge restart triggered")
+            print("✅ Restart completed successfully")
+        else:
+            print(f"❌ Restart failed: {result.stderr}")
+    except subprocess.TimeoutExpired:
+        print("❌ Restart timeout - service may be starting")
+    except FileNotFoundError:
+        print("❌ systemctl not found - cannot restart service")
+    except Exception as e:
+        print(f"❌ Error restarting service: {e}")