[Pre-release] Hitachi Yutaki - COP Quality Indicators

A new beta version of the Hitachi Yutaki integration is available. This version introduces quality indicators for COP measurements to help users better understand the reliability of the displayed values.

✨ What's New

• Added quality indicators for COP measurements:
  • no_data: No measurements available
  • insufficient_data: Too few measurements for reliable calculation
  • preliminary: Enough data but short observation period
  • optimal: Ideal conditions for reliable COP calculation
• Full translations for quality indicators in French and English

🔧 What's Fixed

• Optimized COP calculation parameters:
  • Adjusted sample size for better statistical significance
  • Fine-tuned measurement interval for more accurate results
  • Improved overall calculation reliability

📝 Important Notes

• Quality indicators are available for all COP sensors (heating, cooling, DHW, pool)
• No configuration changes needed, indicators will appear automatically
• Quality level is updated in real-time as measurements accumulate