- Add continuous sensor collector with parallel IPMI operations
- Implement TTL cache for fast web UI responses
- Add timeouts to prevent hanging on slow servers
- Add automatic database cleanup for old sensor data
- Optimize frontend polling intervals (30s/60s instead of 5s/10s)
- Move fan curve management to Server Detail Fan Control tab
- Fix SSH sensor parsing for nested JSON from lm-sensors
- Fix power consumption display for Dell powermonitor output
- Add server overview grid to dashboard with temp/fan/power metrics
- Add database indexes for faster queries