V1.0.5 - Added MQTT monitoring to proxy server

Added - 2025-10-29

• On-Demand MQTT Monitoring
  • New endpoint: POST /v1/iot-service/api/user/device/realtime/start - Start 2-minute MQTT monitoring session
  • New endpoint: GET /v1/iot-service/api/user/device/realtime?device_id={id} - Get cached real-time MQTT data
  • New endpoint: GET /admin/mqtt - View active MQTT session status
  • Background cleanup thread automatically disconnects expired sessions
  • Session-based model prevents resource exhaustion
  • Only POST endpoint allowed in strict mode (doesn't modify printer state)

Changed

• Proxy Server (servers/proxy.py):

  • Changed from automatic monitoring of all devices to on-demand session model
  • Added mqtt_sessions dict to track active monitoring sessions
  • Added configurable session duration (120 seconds) and cleanup interval (30 seconds)
  • Updated /health endpoint to show active MQTT sessions count
  • Modified strict mode check to allow MQTT session start POST endpoint

• Test Suite (tests/manual/test_proxy_server.py):

  • Updated MQTT tests to use on-demand session workflow
  • Increased MQTT wait time from 3 to 5 seconds for better data retrieval
  • Added detailed status output for MQTT session creation and data retrieval