MP combat step 1 (target any peer) DONE; step 2 (cross-pod damage) localised (task #46)

STEP 1 -- target any peer mech: DONE + verified. A live-mech registry
(BTRegisterMech/BTDeregisterMech from the Mech ctor/dtor) collects
every mech -- player, dummy, and peer replicants. The boresight
world-pick walks BTGetTargetCandidates (all mechs != shooter, closest
ray hit) and the whole fire/damage block retargets from the solo
gEnemyMech to the picked hotTarget; missile/projectile validation
generalised via BTIsRegisteredMech. Verified one-box: instance A
enumerates B's mech as a live ReplicantInstance (20 zones, ownerID=3).
Solo un-regressed (pick->damage->kill clean, 28 hits + DESTROYED).

STEP 2 -- cross-pod damage: dispatch + engine reroute are CORRECT and
invoked with a valid owner, but the dispatched message doesn't reach
the master. Entity::Dispatch (ENTITY.cpp:244) reroutes a replicant's
msg via application->SendMessage(ownerID,...); BT_MP_FORCE_DMG proves A
dispatches at B's replicant with ownerID=3, yet B takes 0 STEP-6
damage. Corrects the KB's [T3] "Dispatch already reroutes": the reroute
FIRES; the break is downstream in the transport/delivery of a
dispatched entity-message (update records flow fine -- net-rx works).
Next MP task = that wire delivery. Diagnostics BT_MP_LOG /
BT_MP_FORCE_DMG retained.

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

content/LAST.EGG

@@ -1,8 +1,8 @@
 [mission]
 adventure=BattleTech
-map=cavern
+map=grass
 scenario=freeforall
-time=night
+time=day
 weather=clear
 temperature=27
 length=600
@@ -156,9 +156,8 @@ x=128
 y=32
 width=8
 [pilots]
-pilot=127.0.0.1:1502
-pilot=127.0.0.1:1602
-[127.0.0.1:1502]
+pilot=200.0.0.96
+[200.0.0.96]
 hostType=0
 advancedDamage=1
 loadzones=1
@@ -172,20 +171,6 @@ dropzone=one
 vehicle=bhk1
 vehicleValue=1000
 color=White
-[127.0.0.1:1602]
-hostType=0
-advancedDamage=1
-loadzones=1
-name=Boreas
-bitmapindex=2
-experience=expert
-badge=VGL
-patch=Yellow
-role=Role::Default
-dropzone=one
-vehicle=bhk1
-vehicleValue=1000
-color=Red
 [largebitmap]
 bitmap=BitMap::Large::Aeolus
 [BitMap::Large::Aeolus]
@@ -242,4 +227,3 @@ width=4
 model=dfltrole
 [Role::NoReturn]
 model=noretun
-