feedback1b WH: Mlynar own-attack kills count the damage his attack carries

The S2 / S3 kill tracker kept only the last target of his attack, so the
true damage carried by that attack (卡西米尔 bond, 天马之枪) overwrote it and
a kill landed by that damage was not counted: S2 lost its "trait not reset"
in the 卡西米尔 lineup or with the 天马 set, and S3 never lowered the trait
bonus with the 天马 set. Track every enemy the current attack (or the mark
it set off) hit, cleared after the attack; reflect kills and marks set off
by other operators stay excluded (PRTS 备注).

server/sim/content/kits/tier5.js

@@ -2190,18 +2190,19 @@ const KITS = {
       else battle.removeBuff(unit, 'mlynar:traitUp');
     };
     /**
-     * "仅自身普通攻击（与该次攻击附带的伤害）击倒非角色类单位" (PRTS S2 / S3 备注): `onKill(victim)` for each enemy whose
-     * last damage from him came from his attack or the mark that attack set off (tagged 'mlynarOwn') while his skill
-     * runs; `onAttack()` after each of his attacks ("加成降低于当次攻击后统一结算").
+     * "仅自身普通攻击（与该次攻击附带的伤害）击倒非角色类单位" (PRTS S2 / S3 备注): `onKill(victim)` for each enemy he
+     * knocks out, while his skill runs, that his current attack hit (or the mark it set off, tagged 'mlynarOwn') — so a
+     * kill by the damage that attack carries (天马之枪, the 卡西米尔 bond's true damage, the mark) counts too, in any
+     * hook order; `onAttack()` after each of his attacks ("加成降低于当次攻击后统一结算"), which also closes the set.
+     * 无动于衷's reflection and a mark another operator's attack set off happen outside his attack: never counted.
      */
     const ownKills = (battle, unit, onKill, onAttack = null) => {
-      let last = null;
+      const hit = new Set();
       battle.on('damaged', (c) => {
-        if (c.source !== unit) return;
-        last = c.dmg?.isAttack || (c.dmg?.tags || []).includes('mlynarOwn') ? c.target : null;
+        if (c.source === unit && (c.dmg?.isAttack || (c.dmg?.tags || []).includes('mlynarOwn'))) hit.add(c.target);
       }, { owner: unit, priority: 1000 });
-      battle.on('kill', (c) => { if (c.killer === unit && c.victim === last && c.victim.side === 'enemy' && unit.skill?.active) onKill(c.victim); }, { owner: unit });
-      battle.on('attack', (c) => { if (c.attacker !== unit) return; last = null; if (onAttack) onAttack(); }, { owner: unit });
+      battle.on('kill', (c) => { if (c.killer === unit && hit.has(c.victim) && c.victim.side === 'enemy' && unit.skill?.active) onKill(c.victim); }, { owner: unit });
+      battle.on('attack', (c) => { if (c.attacker !== unit) return; hit.clear(); if (onAttack) onAttack(); }, { owner: unit });
     };
     return {
       skills: lazySkills({