v1.1.0 - CPU Pressure & Stability Improvements

🚀 New Features

• Exposed 1m, 5m, and 15m CPU load averages
• Added CPU Pressure (%) metric based on normalized 1-minute load
• Dynamic CPU status badge (OK / BUSY / OVERLOADED)

⚡ Improvements

• Improved power polling architecture (single interval per session)
• Hardened front-end handling for missing/undefined data
• UTF-8 template encoding for index.html
• Minor UI polish and formatting improvements

🧠 Technical

• CPU pressure calculated as: (1-minute load / CPU cores) × 100
• Added cpu_pressure_1m, cpu_pressure_5m, cpu_pressure_15m to API

v1.0.0

Update README.md