#45/#134 authentic score/death report tail -- replaces the scoring stand-ins

Reconstructs the dark-gap tail of Mech::TakeDamageMessageHandler
(@0x4a02f4-0x4a0890, raw disasm): the three id-0x16 score reports (kill to
the shooter's player / type-0 wire-fidelity / received to the victim's
player) and the BT 0x38-byte VehicleDeadMessage extension {killed-by player,
kill zone} dispatched from the death tail.  Retires BTPostDamageScore /
BTPostKillScore and the per-hit inflicted credit (never existed in 1995:
@0x4c0200 is bound in no handler-table entry -- byte-scan receipt in
decomp-reference).  Suicides now dispatch and the handler negates the award
(the #134 panic penalty).  Collision divert falls through to the death tail
per @0x4a0375 (wall deaths respawn + blast; no score).  ScoreMessage fields
renamed to decoded truth (vitalHit/zoneIndex/subsysID) + wire asserts;
console VTVDamaged points_transfered corrected (Round(award), not Now()).

Benches: scorekill.sh cross-node kill (kills=1 award=4.88, killedBy=2:1
zone=3, single death cycle), scoreself.sh suicide (type=2 award=-39.00
kills=0), deathblast2.sh re-verified (72 bursts at ~9u).

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

context/multiplayer.md

@@ -881,8 +881,10 @@ transition, HUD all landed since P6): console egg → mesh → RunningMission on
    REMAINING note is closed.
 5. ✅ **2-window driving — RESOLVED (tasks #48/#51).** Keyboard MP turning was restored at the root
    (the `pilotArray[1]` shrunk-span overrun fix, task #51); `BT_KEY_NOFOCUS` exists for automated
-   harnesses. DEATHS scoring lights via the existing BTPostKillScore MP branch. Respawn is
-   reconstructed (task #52 — see item 3b).
+   harnesses. DEATHS scoring lights via the kill/death report flow (2026-08-05: now the AUTHENTIC
+   report tail in the victim's TakeDamage handler — BTMechPostCombatReports, replacing
+   BTPostKillScore; same cross-node reroute, see [[combat-damage]] §report tail). Respawn is
+   reconstructed (task #52 — see item 3b; the VehicleDead sender moved to the same tail).
 
 ## Key Relationships
 - Base: [[wintesla-port]] (L4NET). Depends on: [[locomotion]] (update writer), [[combat-damage]]