feat: Add MQTT publisher and tester scripts for USDA Vision Camera System

- Implemented mqtt_publisher_test.py for manual MQTT message publishing
- Created mqtt_test.py to test MQTT message reception and display statistics
- Developed test_api_changes.py to verify API changes for camera settings and filename handling
- Added test_camera_recovery_api.py for testing camera recovery API endpoints
- Introduced test_max_fps.py to demonstrate maximum FPS capture functionality
- Implemented test_mqtt_events_api.py to test MQTT events API endpoint
- Created test_mqtt_logging.py for enhanced MQTT logging and API endpoint testing
- Added sdk_config.py for SDK initialization and configuration with error suppression

demo_mqtt_console.py

@@ -0,0 +1,117 @@
+#!/usr/bin/env python3
+"""
+Demo script to show MQTT console logging in action.
+
+This script demonstrates the enhanced MQTT logging by starting just the MQTT client
+and showing the console output.
+"""
+
+import sys
+import os
+import time
+import signal
+import logging
+
+# Add the current directory to Python path
+sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
+
+from usda_vision_system.core.config import Config
+from usda_vision_system.core.state_manager import StateManager
+from usda_vision_system.core.events import EventSystem
+from usda_vision_system.core.logging_config import setup_logging
+from usda_vision_system.mqtt.client import MQTTClient
+
+def signal_handler(signum, frame):
+    """Handle Ctrl+C gracefully"""
+    print("\n🛑 Stopping MQTT demo...")
+    sys.exit(0)
+
+def main():
+    """Main demo function"""
+    print("🚀 MQTT Console Logging Demo")
+    print("=" * 50)
+    print()
+    print("This demo shows enhanced MQTT console logging.")
+    print("You'll see colorful console output for MQTT events:")
+    print("   🔗 Connection status")
+    print("   📋 Topic subscriptions")
+    print("   📡 Incoming messages")
+    print("   ⚠️ Disconnections and errors")
+    print()
+    print("Press Ctrl+C to stop the demo.")
+    print("=" * 50)
+    
+    # Setup signal handler
+    signal.signal(signal.SIGINT, signal_handler)
+    
+    try:
+        # Setup logging with INFO level for console visibility
+        setup_logging(log_level="INFO", log_file="mqtt_demo.log")
+        
+        # Load configuration
+        config = Config()
+        
+        # Initialize components
+        state_manager = StateManager()
+        event_system = EventSystem()
+        
+        # Create MQTT client
+        mqtt_client = MQTTClient(config, state_manager, event_system)
+        
+        print(f"\n🔧 Configuration:")
+        print(f"   Broker: {config.mqtt.broker_host}:{config.mqtt.broker_port}")
+        print(f"   Topics: {list(config.mqtt.topics.values())}")
+        print()
+        
+        # Start MQTT client
+        print("🚀 Starting MQTT client...")
+        if mqtt_client.start():
+            print("✅ MQTT client started successfully!")
+            print("\n👀 Watching for MQTT messages... (Press Ctrl+C to stop)")
+            print("-" * 50)
+            
+            # Keep running and show periodic status
+            start_time = time.time()
+            last_status_time = start_time
+            
+            while True:
+                time.sleep(1)
+                
+                # Show status every 30 seconds
+                current_time = time.time()
+                if current_time - last_status_time >= 30:
+                    status = mqtt_client.get_status()
+                    uptime = current_time - start_time
+                    print(f"\n📊 Status Update (uptime: {uptime:.0f}s):")
+                    print(f"   Connected: {status['connected']}")
+                    print(f"   Messages: {status['message_count']}")
+                    print(f"   Errors: {status['error_count']}")
+                    if status['last_message_time']:
+                        print(f"   Last Message: {status['last_message_time']}")
+                    print("-" * 50)
+                    last_status_time = current_time
+                    
+        else:
+            print("❌ Failed to start MQTT client")
+            print("   Check your MQTT broker configuration in config.json")
+            print("   Make sure the broker is running and accessible")
+            
+    except KeyboardInterrupt:
+        print("\n🛑 Demo stopped by user")
+    except Exception as e:
+        print(f"\n❌ Error: {e}")
+    finally:
+        # Cleanup
+        try:
+            if 'mqtt_client' in locals():
+                mqtt_client.stop()
+                print("🔌 MQTT client stopped")
+        except:
+            pass
+        
+        print("\n👋 Demo completed!")
+        print("\n💡 To run the full system with this enhanced logging:")
+        print("   python main.py")
+
+if __name__ == "__main__":
+    main()