#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/decomp-reference.md

@@ -247,9 +247,36 @@ From the weapon `.SUB` records + the charge-curve `.data` constants (PE-parsed a
 ### Binary message tables decoded 2026-07-20 (glass input audit) [T1]
 16-byte HandlerEntry {id, namePtr, fnPtr, 0} rows in section_dump. Per-receiver-class id spaces.
 - **Mech (entity)** @0x50BDF8..: 0x12 TakeDamage@004a0230, 0x14 PlayerLink@0049f624, 0x15
-  RealMaxSpeed@0049f604, **0x16 BalanceCoolant@0049f728 (WIRED 2026-07-21, issue #20**: press-only, NO novice guard; sets every condenser valveState@0x1D0=1 then the shared redistribute @0049f788 == BTRecomputeCondenserValves; verify BT_BALTEST=1 + BT_VALVE_LOG=1**)**, 0x17 SetBurningState@0049f674, 0x18
+  RealMaxSpeed@0049f604, **0x16 BalanceCoolant@0049f728 (WIRED 2026-07-21, issue #20**: press-only, NO novice guard; sets every condenser valveState@0x1D0=1 then the shared redistribute @0049f788 == BTRecomputeCondenserValves; verify BT_BALTEST=1 + BT_VALVE_LOG=1**)**, 0x17 SetBurningState@0049f674 (⚠ body mismatch — randomizes position, graphicAlarm 2, sim re-arm; see open-questions), 0x18
   ClearBurningState@0049f700, **0x19 EjectPilot@0049f854**, **0x1a DuckRequest@0049fa00** (the
   manual's CROUCH; streamed button 0x13 sends it — unreconstructed).
+- **BTPlayer** (byte-scanned 2026-08-05, file 0x112dxx; 20-byte rows {id, namePtr, fn, 0, 0} — 6
+  entries EXACTLY, matching the T0 PLAYER.h enum): **0x15 DropZoneReply@0x4bffd0, 0x16
+  Score@0x4c02e4** (the type-1/2 switch — BT shadows the engine id with its override), **0x17
+  VehicleDead@0x4c05c4, 0x18 MissionStarting@0x4bfbe8, 0x19 MissionEnding@0x4bfc20, 0x1a
+  ScoreUpdate@0x4c02a8** (= Player::NextMessageID). **@0x4c0200 ("ScoreInflicted", type-0-only,
+  Verify line 0x18b) is in NO entry — dead code in 1995.** The 1995 type-0 path therefore lands in
+  @0x4c02e4's Verify arm and folds an UNINITIALIZED [ebp-0xc] into currentScore (real bug; port
+  banks 0). @0x4c02e4 internals [T1 raw]: `+0x40==4` MissionEnding gate; registry-find msg+0x34;
+  case 1 = `(ownTonnage/senderTonnage) × role->CalcDamageReceivedScore(basis)` + the
+  console VTVDamaged post (ConsoleHost && !suppressConsole@0x258; **arg 6 = Round(AWARD)** — an
+  ST0-arg __ftol @0x4dcd94 the decompiler rendered argless; the old "Now()" read was wrong); case
+  2 = kill: `CalcKillScore@0x4c052c` × (senderTonnage/ownTonnage), self-kill `fchs`, dual
+  `killCount@0x27c++` (shooter + victim's player — the phantom partner increment, masked by
+  replication), StatusMessage{type 0 Destroyed, victim player, 6.0s} from pool @0x512f6c with
+  vtable @0x513344, clear-target @0x4b04d8 via `playerVehicle+0x128` roster head when the dead
+  mech == `objectiveMech@0x284`. `CalcKillScore@0x4c052c` [T1]: same-team (strcmp
+  `teamName@0x20c`, gate `freeForAll@0x250==0`) → `-friendlyFirePenalty(role+0x14)`; else
+  `victimMech->avgZoneDamage@0x354 × damageBias(role+0x18) + 1.0` (const @0x4c05c0); result ×
+  `(basis + tally) × damageInflictedModifier(role+0xC)`. **ScenarioRole offsets** (Node base):
+  +0xC inflictedMod, +0x10 receivedMod, +0x14 ffPenalty, +0x18 damageBias, +0x1C killBonus,
+  +0x20 specialCaseDeathPenalty. **mech+0x354** = average zone damageLevel (computed with the
+  subsystem average @0x358 by the telemetry refresher, part_012.c:9515). **Wire layouts**
+  (static_assert-locked, btplayer.hpp): ScoreMessage 0x3C {+0x1c scoreAward=tally, +0x20 type,
+  +0x24 basis, +0x28 vitalHit, +0x2c zone, +0x30 subsysID(=TakeDamageMessage+0x5c,
+  inflictingSubsystemID [T0]), +0x34 senderMechID}; BT VehicleDeadMessage 0x38 {engine 0x28 +
+  0x28=0, +0x2c killed-by PLAYER EntityID, +0x34 kill zone}. Senders: the TakeDamage report tail
+  — see [[combat-damage]].
 - **HeatableSubsystem** @0x50E41C: {3, "ToggleCooling"→@004ad6f8}. **Disassembled 2026-07-20**
   (`tools/disas2.py 0x4ad6f8`): a per-subsystem coolant on/off TOGGLE (NOT a multi-level "cycle
   priority" — that's the emergent effect, not the mechanism):