Get 5V/5A PSU for Cecilia (undervoltage)

**Node**: Cecilia | **Priority**: High | **Type**: Hardware

Cecilia undervoltage with Hailo-8 attached.

- Voltage: 0.876V (improved from 0.869V after config changes)  
- Currently throttle-free (0x0) but marginal
- Same PSU solution as Octavia