gauge wave P1a: publish heat/power/weapon attributes + radar zoom

The gauge-databinding-map workflow found most cockpit gauges resolve NULL
because the reconstructed subsystems publish only a fraction of the attributes
the config binds.  First publishing batch (attribute tables are read-only static
data; ids kept a dense prefix from each parent's NextAttributeID):

- HeatSink table dense-append: DegradationTemperature/FailureTemperature (the
  condenser temp-bar warn/max endpoints -- were NULL, so the two-part bars could
  not scale), NormalizedPressure/DegradationPressure/CoolantMassLeakRate, and the
  HeatSink link.  Condenser/Reservoir inherit this -> all 6 condenser temp bars
  now resolve current/warn/max (verified: BT_GAUGE_ATTR_LOG all OK).
- PoweredSubsystem::GetAttributeIndex() (new) publishes InputVoltage->voltageSource
  -- the cluster power-branch gate (the power-lamp/generator-voltage/state-lamp
  sub-branch is skipped when it resolves NULL).  Flows to Sensor/Myomers/weapons.
- MechWeapon::GetAttributeIndex() (new) publishes OutputVoltage/PercentDone->
  rechargeLevel; Emitter/PPC/ProjectileWeapon/MissileLauncher/GaussRifle DefaultData
  re-pointed at it (they carried an EMPTY default-constructed index -> resolved
  NOTHING).  Verified: the ER MED LASER / PPC / STREAK weapon clusters now render
  live recharge dials (were blank TEMP/STATUS).
- Mech::SetTargetRange un-stubbed (radarRange = range) -> the radar map scale +
  overlay range readout track the mapper's zoom (was frozen at 1000).
- GAUGREND ParseAttribute: env-gated per-binding resolution trace (BT_GAUGE_ATTR_LOG)
  -- durable diagnostic infra for the wave.

Verified DBASE+dev gauges: no startup/gauge-construction crash (dense chain intact),
combat un-regressed (TARGET DESTROYED), clusters build with InputVoltage resolving.
Remaining config-binding NULLs: HeatSink/AmbientTemperature (aggregate bank, P3) +
Searchlight/LightOn (P1b).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

game/reconstructed/powersub.hpp

@@ -90,6 +90,27 @@ class Generator;
 			AutoConnect		= 2		// scan all GeneratorClassID segments and attach
 		};
 
+	//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+	// Attribute Support  (gauge data-binding wave)
+	//
+	// The engineering subsystem clusters bind PoweredSubsystem/InputVoltage --
+	// the power-source gate that decides whether the power-lamp / generator-
+	// voltage-bar / state-lamp sub-branch is even constructed (SubsystemCluster
+	// ctor skips it when InputVoltage resolves NULL).  Published on top of
+	// HeatSink's dense index; Sensor/Myomers/MechWeapon chain to GetAttributeIndex()
+	// below and inherit it (so InputVoltage + the HeatSink temps reach every
+	// powered/weapon subsystem's cluster).
+	//
+	public:
+		enum {
+			InputVoltageAttributeID = HeatSink::NextAttributeID,
+			NextAttributeID
+		};
+	private:
+		static const IndexEntry AttributePointers[];
+	public:
+		static AttributeIndexSet& GetAttributeIndex();
+
 	//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 	// Streamed model resource.
 	//