openspec/changes/archive/2026-09-10-add-power-thermal/proposal.md
add-power-thermal
ACTIVE BUILD
Why
Thor, PoE satellites, and a resin lid fight the same watts and the same sun. If power sags, drop AI, never record.
What
- T4000 70 W default / 90 W TMP; AGX kit 40–130 W
- PoE+ budget for two sats
- Separate PSUs; no PoE backfeed into the kit
- Capability:
hardware-kit
Impact
- Capabilities: ADDED power/thermal
- ADRs: none
User journey & surfaces
No new UI because this is the power tree and heat.
Out of scope
- Measured thermal on the real kit (needs TDG-12271-001 + a print)