Comprehensive ecosystem of a Smart Home turnkey (Home Assistant + Zi

Task: Complete automation of a private house (300 m²) with the integration of heterogeneous devices into a single interface without reliance on cloud services.
Technology stack: Home Assistant OS, Zigbee2MQTT, MariaDB.
Implemented scenarios:
Energy saving:
Zone control of heating and air conditioning.
Scenario "Nobody is home": turning off outlets, lights, and switching the climate to economy mode (saving up to 30% of electricity).
Adaptive lighting:
Biodynamic lighting (changing the color temperature of light depending on the time of day).
Automatic activation based on presence sensors considering natural light levels.
Security and Access Control:
Integration of surveillance cameras (CCTV) with image recognition (Frigate).
Leak protection (automatic shutoff of faucets) and smoke detectors.
Notifications in Telegram with photos/videos in case of alarm.
Logic and Interface:
Voice control via Alice.
Local operation of the system: the house continues to "think" even without the internet.