#83: the COLLISION DIVERT -- type-0 damage prices as internal rattle, never armor

The crash self-damage reconstruction (9c83a46) exposed its missing second
half: the binary's TakeDamage hub DIVERTS damageType 0 (@0x4a0368) into
FUN_0049ffcc -- an export-gap distributor recovered by raw disasm -- so
collision damage NEVER reaches the zone/armor loop.  Without the divert the
mover's raw kinetic-energy figure (60-ton mech: ~1000+ per wall tap, 90k+ on
a hard slam) fell into the WEAPON loop: 'tapped a wall and died instantly'.

The distributor, byte-anchored: gate on the owning player's advancedDamage
copy (+0x268 -- the manual's 'splash/collision damage' technician setting);
scale = (2000/moverMass) / (100 km/h in u/s)^2 / (1 - elasticity^2)
(tbyte 1/3.6 @0x4a0148; mass @+0x20c; elasticity @+0x244); scaled < 0.5 is
FREE; else Round(2x) sub-hits of 0.5 land on random INTERNAL subsystems
(HeatSink family / Gyroscope / Torso, drawn by collisionCriticalHitWeight
@0x10C) via ApplyDamageAndMeasure (@0x4ac07c).  Bridges: family derivations
(heat/gyro/torso.cpp), BTPlayerAdvancedDamageOn (btplayer.cpp).

Verified: bhk1 wall test -- 94k slam = 4.2 rattle pts in 8 sub-hits, taps
free (0.049 < 0.5), armor untouched.  A/B: arena wall-grind now 0 deaths,
27 rattle events, the limper STAYS GIMPED and peers' replicants re-enter the
gimp cycle between bounded staggers; grass circling unchanged (198 replicant
gimp entries).  [crashdmg]/[colldmg] probes document the pricing.

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

game/reconstructed/mechsub.hpp

@@ -291,6 +291,11 @@ class Damage;
 		// (binary @0x4a0473: tally += critted->+0x108).
 		Scalar	CriticalScoreBonus() const	{ return criticalReference; }
 
+		// #83 (collision rattle): the authored lottery weight the collision-
+		// damage distributor (FUN_0049ffcc @0x4a00f2) accumulates per eligible
+		// subsystem against a [0,1) roll.
+		Scalar	CollisionCritWeight() const	{ return collisionCriticalHitWeight; }
+
 		// task #2 (crit propagation): the zone-side crit paths
 		// (Mech__DamageZone::CriticalHit @0049ccc4 / SendSubsystemDamage
 		// @0049c9a8) reach these subsystem facets.