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

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

Octavia throttling due to insufficient PSU for Pi5 + Hailo-8 + NVMe.

- Voltage: 0.845V (improved from 0.750V after config changes)
- Throttle flags: 0x50005
- Need official Pi 5 27W USB-C PSU or equivalent 5V/5A supply