feedback5: merge W5AA — community reports of 2026-10-06: the 孤岛风云 prisoners leave the gate confined (grey) and change model as their prefabs do, the 4th attack hits freed; a bounty enemy that dies with no operator behind it pays in 联防 too (the helper whose half it fell on); 忍冬's trigger and 枯朽之种's bounty were already fixed (pinned by tests); DESIGN §25.14 after round 18's §25.13; data/enemies.json regenerated offline on the merged code (round 18's model quirks + the prisoners' clips); golden: vs feedback5 exactly W5AA's moves (26 battles, solo-ABYSS-2, coop2-NORMAL-3, coop3-ABYSS-5, solo-HARD-9-boosted), vs W5AA exactly round 18's boss-pool moves

server/sim/battle/deploy.js

@@ -139,10 +139,7 @@ export class BattleDeploy {
           if (pp) pp.killed++;
         }
         if (killer) killer.stats.kills++;
-        if (unit.bounty && unit.bounty.coins > 0) {
-          const payee = killer && killer.side === 'ally' && killer.ownerId != null ? killer.ownerId : (unit.bounty.ownerPlayerId ?? unit.ownerId);
-          this.addCoins(payee, unit.bounty.coins);
-        }
+        if (unit.bounty && unit.bounty.coins > 0) this.addCoins(this._bountyPayee(unit, killer), unit.bounty.coins);
       }
     }
     // the reason ('killed' | 'retreat' | 'expired' | …) lets the client keep the knock-down sound for real knock-outs

server/sim/battle/economy.js

@@ -48,6 +48,24 @@ export class BattleEconomy {
     return u.side === 'ally' ? [u.tileR, u.tileC] : [Math.round(u.y), Math.round(u.x)];
   }
 
+  /**
+   * The player a kill bounty (`unit.bounty`: a 悬赏 card's enemy, a 鸭爵 swap) pays when its enemy dies: the bounty pays
+   * whenever the body dies (the owner's decision, relayed 2026-10-06). An operator or summon of a player of this battle
+   * that dealt the blow pays its player ("将其击倒者获得N资金" — a 联防 helper included); any other death — 无来源 damage
+   * (terrain, an uncredited tick), its own drain, another enemy, an ownerless unit — pays the card's owner when that
+   * player fights here (own field, Final Assault / Hidden Core), else (联防, where the owner is the leaker) the player
+   * whose half of the field it fell on: PRTS 卫戍协议：盟约 决策 "该敌人于对应玩家所属区域倒下时，使相应玩家获得额外资金"
+   * [ASSUMED for 联防: no source names the payee of a death nobody caused there]. Until 0.2.0 that fallback was the
+   * leaker, who has no entry in a 联防 battle, and addCoins dropped the coins (community report of 2026-10-06
+   * 「被源石地板烫死的悬赏没给赏金」: until 0.1.3 the 联防 field was the round's map, 战场#04's 活性源石 included).
+   */
+  _bountyPayee(unit, killer = null) {
+    if (killer && killer.side === 'ally' && killer.ownerId != null && this._pp(killer.ownerId)) return killer.ownerId;
+    const owner = unit.bounty?.ownerPlayerId ?? unit.ownerId;
+    if (owner != null && this._pp(owner)) return owner;
+    return this._ownerForTile([Math.round(unit.y), Math.round(unit.x)]);
+  }
+
   addCoins(playerId, n) {
     const pp = this._pp(playerId);
     if (!pp || !(n > 0) || !Number.isFinite(n)) return 0;