Playtest #6 follow-up (v2.5.1): leader HP review — 直接乘算, one debuff instance, 999 layer cap, 限伤; elite to the board; 假想敌：胄 kit

- co-op leaders died within seconds: leader HP is the official data (40 values pinned); bond / strategy / item /
  机变 / 特质 "+X%" bonuses now add up (PRTS 直接乘算) instead of compounding; a same-named enemy debuff keeps one
  (strongest) instance per target (奥术 across a pair field); leader parts pass damage 1:1; fixed co-op pool (the user's call)
- official limits read from the client: each bond stops at 999 layers (MAX_GARRISON_STACK); a leader hit of 300000+ in
  boss / hidden battles is cancelled (MAX_BATTLE_DAMAGE, 限伤) — shared/constants.js switches, research 11
- a merge that consumes a deployed copy puts the elite on that tile and facing (user-confirmed); gold target highlight,
  promotion effect
- 假想敌：胄 per PRTS: one shell, shells within range, any drone death costs 2 % max HP, 剑/锤 sorties and 瘫痪
- DESIGN §20.10–§20.14; 2842 unit tests, all 28 browser suites green; Chrome = Node on boss fields

test/content/choices.test.js

@@ -782,7 +782,8 @@ test('battle plans come from the blackboards; gates as documented', () => {
   assert.deepEqual(gateOf(EFF('allybuff_select_14')), { kind: 'sameRow', count: 3 });
   assert.deepEqual(gateOf(EFF('allybuff_select_11')), { kind: 'always', count: 0 });
   assert.equal(battlePlanOf(refOf('allybuff_select_11')).heal, 50);
-  assert.deepEqual(battlePlanOf(refOf('allybuff_select_18')).flawless, { atkMul: 1.3, defMul: 1.3 });
+  // 无瑕 "攻击力和防御力+30%": 直接乘算 — the additive percentage bucket (constants.js DIRECT_BONUS_STACKING)
+  assert.deepEqual(battlePlanOf(refOf('allybuff_select_18')).flawless, { atkPct: 0.3, defPct: 0.3 });
   assert.deepEqual(battlePlanOf(refOf('allybuff_select_14')).opMods, { redeployMul: 0.5 });
   assert.deepEqual(battlePlanOf(refOf('enemydebuff_select_8')).enemy, [{ rank: 'BOSS', mods: { defFlat: -200 } }]);
   for (const id of TEAM_PREP) assert.equal(battlePlanOf(refOf(id)), null, `${id}: prep only`);