Fixes the staged POWERSUB.HPP base (HeatableSubsystem -> HeatSink, the real
hierarchy) and reconstructs PoweredSubsystem: a HeatSink that draws electrical
power. Added members (voltageSource = SubsystemConnection, electricalStateAlarm =
AlarmIndicator(5), modeAlarm = AlarmIndicator(3), input/output/ratedVoltage) and
corrected the resource struct (voltageSourceIndex + thermalResistivityCoefficient
+ startTime). Ctor chains HeatSink and primes the electrical state; statics, dtor,
ResetToInitialState, TestClass/TestInstance real.
The voltage-source resolution (indexing the owner mech's subsystem ROSTER for the
powering generator) + master-instance electrical sim + AttachToVoltageSource are
deferred to the segment-walk phase (phase 4) where the roster is populated -- the
subsystem constructs with no attached source until then. Verified slice now:
MechSubsystem -> HeatableSubsystem -> HeatSink -> PoweredSubsystem. Compile-verified
(BT: 26 ok); tree links clean.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>