Audio Phase 1 (AUDIO_FIDELITY F3/F4/F10/F15/F18/F20 + KB): the quick wins

F3 distance: alDistanceModel(AL_NONE); restored the commented authored
  distance multiply in Dynamic3D::CalculateSourceVolumeScale, added the same
  override to Static3D, dropped the (now inert) AL_MAX_DISTANCE writes.  Far
  battle audio follows the authored knee/rolloff curve again, and the volume
  cull / voice steal / ducking chains are distance-aware.
F4 volume law: AL_GAIN = volume_scale^2 at all 3 per-frame sites (Direct/
  Dyn3D/Static3D) -- the GM CC7 squared curve; linear was ~+6 dB at mids.
F10 doppler: alDopplerFactor(0) (AL's model ran wrong constants + sign-
  inverted velocity: approaching sources pitched DOWN); the AUTHORED
  dopplerCents (AUDIO.INI range/speed-of-sound model, decomp-proven consumer
  part_008.c:7466) now adds into the Dynamic3D pitch chain.
F15 ConfigureActivePress: published at the MechSubsystem BASE (binary id 2,
  descriptor @0x50de5c -> +0x110); renamed the misnamed vitalSubsystemIndex
  member (the weapon ConfigureMappables handler already drives it 0/-1).
  Removed the invented Sensor/Myomers duplicates and RESTORED their byte-
  exact layouts (0x328/0x358 allocs + asserts).  MechWeapon's pinned-id pad
  absorbed the +1 chain shift -- which matches the binary's own numbering.
F18 cook-off warning: AmmoBin FireCountdownStarted -> the existing
  cookOffArmed @0x18C (binary table @0x512600); the countdown klaxon can fire.
F20 zoom blip: L4MechControlsMapper publishes TargetRangeExponent -> the live
  @0x1a4 zoom member (own table chained to MechControlsMapper).
KB: replaced the bogus divisionParameters+0x10 rate read with
  SystemClock::GetTicksPerSecond() (FUN_0044e19c is GetFrameRate -- original
  audio frames were CLOCK TICKS).

Regression (35s drive+fire): stable; ConfigureActivePress binds real on all 9
subsystems (idle -1, zero pad redirects); FireCountdownStarted +
TargetRangeExponent bind live members; attrnull 53 -> 41; chirp still dead;
footfalls still fire (gain now correctly squared).

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

game/reconstructed/mechsub.cpp

@@ -89,11 +89,29 @@ static const StatusNameEntry StatusNameTable[] =
 //#############################################################################
 // Shared Data Support
 //
+// ConfigureActivePress -> the +0x110 session flag (AUDIO_FIDELITY.md F15).
+const MechSubsystem::IndexEntry
+	MechSubsystem::AttributePointers[]=
+{
+	ATTRIBUTE_ENTRY(MechSubsystem, ConfigureActivePress, configureActivePress)	// id 2 @0x110
+};
+
+MechSubsystem::AttributeIndexSet&
+	MechSubsystem::GetAttributeIndex()
+{
+	static MechSubsystem::AttributeIndexSet attributeIndex(
+		ELEMENTS(MechSubsystem::AttributePointers),
+		MechSubsystem::AttributePointers,
+		Simulation::GetAttributeIndex()
+	);
+	return attributeIndex;
+}
+
 MechSubsystem::SharedData
 	MechSubsystem::DefaultData(
 		&MechSubsystem::ClassDerivations,
 		ReconMessageHandlers,
-		ReconAttributeIndex,
+		MechSubsystem::GetAttributeIndex(),
 		MechSubsystem::StateCount
 	);
 
@@ -132,7 +150,7 @@ MechSubsystem::MechSubsystem(
 	criticalReference			= 0;			// this[0x42]
 	collisionCriticalHitWeight	= 0;			// this[0x43]
 	printSimulationState		= 0;			// this[0x41]
-	vitalSubsystemIndex			= -1;			// this[0x44]
+	configureActivePress		= -1;			// this[0x44] configure-session idle
 	damageZone		= (ReconDamageZone *)new DamageZone(this, 0);	// this[0x38] = FUN_0041de1c(new 0x160, this, 0)
 }
 
@@ -162,7 +180,7 @@ MechSubsystem::MechSubsystem(
 	controlDestination	= 0;					// this[0x3a]=param_6 (ctor pass-through;
 	controlMessageID	= 0;					// this[0x3b]=param_7  weapons override -- task #6)
 	resource		= subsystem_resource;		// this[0x3c]
-	vitalSubsystemIndex	= -1;					// this[0x44]
+	configureActivePress	= -1;				// this[0x44] configure-session idle
 	vitalSubsystem	= (subsystem_resource->vitalSubsystemIndex == 1);	// res+0x48==1
 
 	BindName(refCount, subsystem_resource->videoObjectName);	// res+0x4c