CROUCH reconstruction (WIP): the master posture/duck machine, decoded + wired

Raw-disasm of the dark master-perf region (@0x4a9cf0-0x4aa0af): the myomer
effectiveness factor (+0x79c, MAX over heatables' +0x31c, scales speedDemand
-- feeder @004b8be3 unreconstructed, neutral 1.0 [T3]), the posture selector
(+0x3f8: mode/novice/leg-state/myomer gates -- novices cannot crouch), and
the DuckRequest consumer (standing -> SetLegAnimation(2) 'sqd', ducked ->
SetLegAnimation(3) 'squ', ForceUpdate 8+1 ships the type-3 state record,
stability alarm flips, request consumed).  +0x1DC = mountSegment... er, the
searchlight learned that one; here: mapPosture @0x3f8 + myomerEffectiveness
@0x79c members land; value-space note (port normal mode == 1, binary 0).

VERIFIED: request->consumer chain fires ([duck] SQUAT), the sqd clip plays
(22kf/7joint, ends root -2.22 crouched -- clip data parsed from BTL4.RES,
squ is its exact mirror; loader slot map re-verified byte-exact).  OPEN: the
parked crouch pose does not HOLD on screen (reverts ~1 frame after clip end
with NO SetLegAnimation re-arm logged) -- the hold's render path is the
remaining dig; [duck] re-arm tracer left in SetLegAnimation.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

game/reconstructed/mech.cpp

@@ -2118,6 +2118,9 @@ Mech::Mech(
 	ramLastVictim    = 0;								// ram contact-edge state
 	ramContactLinger = 0.0f;
 	lastInflictingDamage = 0.0f;						// task #60: killing-blow magnitude (set on hit)
+	mapPosture = 0;										// binary @0x3f8 (the ctor zero-block @0x4b3d18 zeroes the band)
+	myomerEffectiveness = 1.0f;							// binary @0x79c: 0-init + per-frame MAX; the port holds the
+														// healthy 1.0 until the Myomers Performance feeder lands [T3]
 	if (GroundReal() && GetCollisionVolumeCount() > 0
 		&& collisionTemplate != 0 && collisionVolume != 0)
 	{