diff --git a/server/sim/content/kits/index.js b/server/sim/content/kits/index.js
index 65bad48b..f76ba9a2 100644
--- a/server/sim/content/kits/index.js
+++ b/server/sim/content/kits/index.js
@@ -78,13 +78,17 @@ export const STANDIN_KIT_FILES = Object.freeze(['standin-acguad.js', 'standin-sh
  * The 自选 operator kit files (`ops/op-<codename>.js`, registry key = the operator's charId, an owned-6★ pick of
  * data/backups.json; a new file is appended). An operator without a file is not offered as a 自选 pick (KITTED_CHARS).
  */
-export const OPERATOR_KIT_FILES = Object.freeze(['op-siege.js',
+export const OPERATOR_KIT_FILES = Object.freeze([
+  'op-siege.js',
   'op-chen.js',
   'op-irene.js',
   'op-helage.js',
   'op-shining.js',
   'op-cgbird.js',
   'op-saga.js',
+  'op-amgoat.js',
+  'op-cerber.js',
+  'op-heyak.js',
 ]);
 
 /**
diff --git a/server/sim/content/kits/ops/op-amgoat.js b/server/sim/content/kits/ops/op-amgoat.js
new file mode 100644
index 00000000..891d2e5a
--- /dev/null
+++ b/server/sim/content/kits/ops/op-amgoat.js
@@ -0,0 +1,192 @@
+// server/sim/content/kits/ops/op-amgoat.js — 艾雅法拉 (char_180_amgoat) 自选 operator kit: 6★ 中坚术师 (术师), an owned-6★
+// pick of the tier-5 and tier-6 自选 slots; every skill, both talents, the trait and both modules at every form.
+// Kit contract and the 自选 rules: ../README.md ("How to add an operator (自选)").
+//
+// Forms (data/backups.json units.char_180_amgoat, the DIY slot statuses): normal = E2 Lv1, skills at rank 4, no module;
+// elite = E2 Lv60, rank 7, the picked module at stage 1 (tier 5) or 3 (tier 6). Potential 0 [ASSUMED: no account].
+// Sources: character_table / skill_table / battle_equip_table (zh_CN, as built into backups.json; every module part is
+// valid outside 集成战略 — no `validInGameTag`) and PRTS 艾雅法拉 (S1 备注 "每次部署艾雅法拉时，重新计算该技能的使用次数";
+// S2 备注 "爆炸范围为半径1.5", "技能实际效果为先削减主攻击目标的法术抗性，再对爆炸范围内所有敌人造成½倍率的伤害(包括主攻击目标)，
+// 最后对主攻击目标额外造成一次½倍率的伤害", 法术抗性 "{{**|80%|-20%}}" = a multiplier; S3 "攻击间隔大幅度缩短(-1.1)";
+// 乱火's hidden 备注 "在最小值与最大值之间随机生成一个浮点数后向下取整").
+// - Trait (中坚术师) "攻击造成法术伤害": the profession default (ranged arts, hits air, block 1). Module CCR-X “错过的声音”
+//   adds "无视目标10点法术抗性" (trait bb magic_resist_penetrate_fixed: a permanent resIgnoreFlat), CCR-Y “宠物大赛第一名”
+//   "普通攻击命中精英或领袖敌人时获得1点技力" (trait bb sp: per hit of one of her attacks on an elite / leader — the S2
+//   explosion's splash and its second ½ are not further 命中 [ASSUMED]; a running timed skill takes no SP, as always).
+// - T1 炎息 "在场时，所有友方【术师】职业干员的攻击力+14%": an aura on every 【术师】 operator of the field (her included) while
+//   she is deployed (installAura, the kits' convention for field-wide talents; several sources keep the strongest). CCR-X
+//   stage 2+ turns it into "携带时…+22%" (the module talent's bb): the same aura whether she is on the field or not — she
+//   is carried while she belongs to the battle, knocked out or waiting to redeploy included.
+// - T2 乱火 "部署后立即随机获得7~15点技力" (bb sp_min 7, sp_max 16): floor(uniform [sp_min, sp_max)) SP at every deployment
+//   (PRTS hidden 备注). CCR-Y stage 3 adds "并随机提升6~15的攻击速度" (attack_speed_min / _max, the same draw) for that
+//   deployment [ASSUMED: no duration given — until she leaves the field], and with `factor` "部署后范围内存在精英或领袖敌人时，
+//   获得的技力和提升的攻击速度取最大值": an elite or leader enemy in her attack range at that deployment gives the text's
+//   maxima, 15 SP / 15 ASPD — the blackboard maxima are the exclusive bounds of the draw (stage 2's attack_speed_max 1
+//   with no ASPD in its text says so) [ASSUMED: 取最大值 = the largest value the draw yields; checked at the deployment
+//   instant — at the battle start no enemy is on the field yet].
+// - S1 二重咏唱 (MANUAL, 25 s, data DEFAULT): ASPD +[a].attack_speed; from the second cast of a deployment on, ASPD
+//   +[b].attack_speed and ATK +[b].atk (PRTS 备注: the count restarts at every deployment).
+// - S2 点燃 (AUTO, 可充能 2, data DEFAULT): the next attack, on impact — the main target's RES ×(1 + magic_resistance) for
+//   `duration` s first, then an explosion of radius 1.5 around it (a 中点判定 splash) dealing atk_scale × ATK arts to
+//   every enemy in it, the main target included, each of the others then getting the same RES cut, and last
+//   atk_scale_2 × ATK arts to the main target again (the PRTS 备注's order; it names the main target's cut only as
+//   coming first, so the others' cut follows their hit [ASSUMED]; the cut is "同名效果取最高" through applyStrongest).
+//   The explosion reaches air units and skips enemies an area effect cannot select (foesInRadius); like the engine's
+//   profession splash it can be dodged.
+// - S3 火山 (MANUAL, 15 s): ATK +atk, attack interval base_attack_time (−1.1 s flat on her 1.6 s), the attack range x-3
+//   while it runs, each attack throws lava at attack@max_target enemies of that range drawn at random (all of them when
+//   fewer) — one projectile each, no splash [ASSUMED: the text names none]. Trigger: the data's SKILL_RANGE on
+//   x-3 — its text says "攻击范围增大", which tools/build-data.mjs ATTACK_RANGE_CHANGE does not list, so the owner's
+//   ACTIVE_RANGE rule did not reach it (reported; the kit keeps the data rule).
+// - No summon (the forms list no token).
+
+import { num, talentBb, traitBb, skillRec, statBuff, installAura, batMod, giveSp, onHitBy } from '../shared/tier1.js';
+import { hasHp } from '../../../damage.js';
+import { canTargetEnemy } from '../../../targeting.js';
+import { bodyInKeys } from '../../../body.js';
+
+const S1 = 'skchr_amgoat_1';
+const S2 = 'skchr_amgoat_2';
+const S3 = 'skchr_amgoat_3';
+/** S2 点燃: the explosion radius (PRTS 备注 "爆炸范围为半径1.5"; no blackboard key). */
+const IGNITE_RADIUS = 1.5;
+/** S3 火山's 技能范围 x-3 when the data carries no grid (range_table x-3: the tiles within 3 steps). */
+const X3 = Object.freeze([[3, 0], [2, -1], [2, 0], [2, 1], [1, -2], [1, -1], [1, 0], [1, 1], [1, 2], [0, -3], [0, -2], [0, -1],
+  [0, 0], [0, 1], [0, 2], [0, 3], [-1, -2], [-1, -1], [-1, 0], [-1, 1], [-1, 2], [-2, -1], [-2, 0], [-2, 1], [-3, 0]]);
+/** Damage of the S2 explosion and its second ½ (not a further 命中 of the attack: CCR-Y counts the first). */
+const IGNITE_TAG = 'amgoat:ignite';
+const AURA_KEY = 'talent:amgoat:casters';
+const AURA_EVERY = 0.5;
+
+const bbOf = (chess, id) => skillRec(chess, id)?.bb ?? {};
+/** A 【术师】 operator (summons are never operators). */
+const isCaster = (a) => !!a && a.kind === 'op' && a.def?.profession === 'CASTER';
+/** An elite or leader enemy (精英或领袖敌人). */
+const isEliteEnemy = (e) => !!e && e.side === 'enemy' && (e.isBoss || e.def?.rank === 'ELITE' || e.def?.rank === 'BOSS');
+const tagged = (d, tag) => !!(d && d.tags && d.tags.includes(tag));
+/** A module trait that works 在集成战略中 only (ISW modules): nothing of it applies in this mode. */
+const roguelikeOnly = (chess) => /集成战略/.test(String(chess?.trait?.moduleDesc ?? ''));
+/** Named talent `i` of the record (its desc tells the module stage's wording). */
+const talentRec = (chess, i) => (chess?.talents ?? []).filter((t) => t && t.index !== -1)[i] ?? null;
+
+/** "携带时": the aura of installAura, held while she belongs to the battle — on the field or not. */
+function carriedAura(battle, unit, { key, select, mods, value }) {
+  battle.every(AURA_EVERY, () => {
+    for (const a of battle.alliesFor(unit)) {
+      if (!select(a)) continue;
+      const cur = a.findBuff(key);
+      if (cur && cur.source !== unit && (cur.data?.v ?? 0) > value && cur.timeLeft > 0.05) continue;
+      battle.addBuff(a, { key, duration: AURA_EVERY + 0.1, mods, source: unit, data: { v: value }, tags: ['aura'] });
+    }
+  }, { owner: unit, immediate: true });
+}
+
+export default {
+  char_180_amgoat: (bb, chess) => {
+    const t0 = talentBb(chess, 0), t1 = talentBb(chess, 1);
+    const carried = /携带时/.test(String(talentRec(chess, 0)?.desc ?? ''));
+    const b1 = bbOf(chess, S1), b2 = bbOf(chess, S2), b3 = bbOf(chess, S3);
+    const s2 = skillRec(chess, S2), s3 = skillRec(chess, S3);
+    const mr = num(b2.magic_resistance), resDur = num(b2.duration);
+    const resCut = (battle, unit, e) => {
+      if (e && e.alive && mr) battle.applyStrongest(e, 'amgoat:ignite', { duration: resDur, value: mr, mods: (v) => ({ resMul: Math.max(0, 1 + v) }), source: unit });
+    };
+    const maxLava = Math.max(1, Math.floor(num(b3['attack@max_target'], 1)));
+    return {
+      skills: {
+        [S1]: {
+          kind: 'duration',
+          onStart({ battle, unit }) {
+            // the casts of this deployment (PRTS 备注: "每次部署…重新计算该技能的使用次数")
+            const n = unit.mem.amgoatDuetSeq === unit.deploySeq ? num(unit.mem.amgoatDuetN) + 1 : 1;
+            unit.mem.amgoatDuetSeq = unit.deploySeq;
+            unit.mem.amgoatDuetN = n;
+            const mods = n >= 2
+              ? { aspd: num(b1['amgoat_s_1[b].attack_speed']), atkPct: num(b1['amgoat_s_1[b].atk']) }
+              : { aspd: num(b1['amgoat_s_1[a].attack_speed']) };
+            battle.addBuff(unit, { key: 'skill:amgoat:duet', mods, tags: ['skill'] });
+          },
+          onEnd({ battle, unit }) { battle.removeBuff(unit, 'skill:amgoat:duet'); },
+        },
+        [S2]: {
+          kind: num(s2?.maxChargeTime, 1) > 1 ? 'charges' : 'instant',
+          attack: {
+            // the engine's hit on the main target is its share of the explosion (½); the RES cut came first (install)
+            atkScale: num(b2.atk_scale, 1),
+            onEachHit({ battle, unit, target, kind }) {
+              if (kind !== 'main' || !target) return;
+              const atk = unit.s.atk, x = target.x, y = target.y;
+              for (const e of battle.foesInRadius(x, y, IGNITE_RADIUS, true)) {
+                if (e === target) continue;
+                battle.dealDamage(unit, e, { amount: atk * num(b2.atk_scale, 1), type: 'arts', isAttack: true, isSplash: true, isSkill: true, tags: [IGNITE_TAG] });
+                resCut(battle, unit, e);
+              }
+              if (hasHp(target)) battle.dealDamage(unit, target, { amount: atk * num(b2.atk_scale_2, num(b2.atk_scale, 1)), type: 'arts', isAttack: true, isSkill: true, tags: [IGNITE_TAG] });
+              battle.fx('explosion', { x, y, id: unit.id, r: IGNITE_RADIUS, dmgType: 'arts' });
+            },
+          },
+        },
+        [S3]: {
+          kind: 'duration',
+          mods: { atkPct: num(b3.atk), batPct: batMod(b3.base_attack_time, chess) },
+          // every enemy of x-3 is a candidate; install draws the lava targets among them
+          targeting: { rangeGrid: s3?.rangeGrid ?? X3, allInRange: true },
+        },
+      },
+      talents: [
+        { install(battle, unit) { // 炎息: the field's 【术师】 ATK +atk — while she is deployed, or (CCR-X stage 2+) carried
+          const a = num(t0.atk);
+          if (!(a > 0)) return;
+          const opts = { key: AURA_KEY, value: a, select: isCaster, mods: { atkPct: a } };
+          if (carried) carriedAura(battle, unit, opts);
+          else installAura(battle, unit, { ...opts, interval: AURA_EVERY });
+        } },
+        { install(battle, unit) { // 乱火: SP (and with CCR-Y stage 3 ASPD) at every deployment; the maxima with an elite in range
+          const spLo = num(t1.sp_min), spHi = num(t1.sp_max), asLo = num(t1.attack_speed_min), asHi = num(t1.attack_speed_max);
+          const maxRule = num(t1.factor) > 0;
+          battle.on('deploy', (ctx) => {
+            if (ctx.unit !== unit || !unit.alive) return;
+            // (a scan of the enemies: the tile index of enemiesInKeys is the last tick's)
+            const top = maxRule && battle.enemies.some((e) => isEliteEnemy(e) && canTargetEnemy(unit, e, unit.profile) && bodyInKeys(e, unit.rangeKeySet));
+            // floor of a uniform draw in [lo, hi); "取最大值" = the largest value the draw yields (hi − 1 for integer bounds)
+            const draw = (lo, hi) => (hi > lo ? (top ? Math.ceil(hi) - 1 : Math.floor(battle.rng.range(lo, hi))) : 0);
+            const sp = draw(spLo, spHi);
+            if (sp > 0) giveSp(unit, sp);
+            const as = draw(asLo, asHi);
+            if (as > 0) battle.addBuff(unit, { key: 'talent:amgoat:wildfire', mods: { aspd: as }, tags: ['talent'] });
+          }, { owner: unit });
+        } },
+      ],
+      install(battle, unit) {
+        // module traits (none on the normal form): CCR-X 无视目标10点法术抗性, CCR-Y SP per hit on an elite / leader
+        if (!roguelikeOnly(chess)) {
+          const tb = traitBb(chess);
+          const pen = num(tb.magic_resist_penetrate_fixed);
+          if (pen > 0) statBuff(battle, unit, 'trait:amgoat:resIgnore', { resIgnoreFlat: pen });
+          const sp = num(tb.sp);
+          if (sp > 0) {
+            battle.on('damaged', (ctx) => {
+              const d = ctx.dmg;
+              if (ctx.source !== unit || !d || !d.isAttack || d.isSplash || tagged(d, IGNITE_TAG) || !isEliteEnemy(ctx.target)) return;
+              giveSp(unit, sp, 'trait');
+            }, { owner: unit });
+          }
+        }
+        const sid = unit.skill?.id;
+        if (sid === S2) {
+          // 点燃: "先削减主攻击目标的法术抗性" — the main target's RES cut lands before the first damage of the attack
+          onHitBy(battle, unit, (ctx) => {
+            const d = ctx.dmg;
+            if (d.isAttack && d.isSkill && !d.isSplash && !tagged(d, IGNITE_TAG)) resCut(battle, unit, ctx.target);
+          }, 50);
+        } else if (sid === S3) {
+          // 火山: "随机对攻击范围内至多N个敌人发射熔岩" — a random draw among every enemy of the range
+          battle.on('beforeAttack', (ctx) => {
+            if (ctx.attacker !== unit || !unit.skill?.active || ctx.targets.length <= maxLava) return;
+            ctx.targets = battle.rng.shuffle(ctx.targets.slice()).slice(0, maxLava);
+          }, { owner: unit });
+        }
+      },
+    };
+  },
+};
diff --git a/server/sim/content/kits/ops/op-cerber.js b/server/sim/content/kits/ops/op-cerber.js
new file mode 100644
index 00000000..95f3efcc
--- /dev/null
+++ b/server/sim/content/kits/ops/op-cerber.js
@@ -0,0 +1,180 @@
+// server/sim/content/kits/ops/op-cerber.js — 刻俄柏 (char_2013_cerber) 自选 operator kit: 6★ 中坚术师 (术师), an owned-6★
+// pick of the tier-5 and tier-6 自选 slots; every skill, both talents, the trait and both modules at every form.
+// Kit contract and the 自选 rules: ../README.md ("How to add an operator (自选)").
+//
+// Forms (data/backups.json units.char_2013_cerber, the DIY slot statuses): normal = E2 Lv1, skills at rank 4, no module;
+// elite = E2 Lv60, rank 7, the picked module at stage 1 (tier 5) or 3 (tier 6). Potential 0 [ASSUMED: no account].
+// Sources: character_table / skill_table / battle_equip_table (zh_CN, as built into backups.json; every module part is
+// valid outside 集成战略 — no `validInGameTag`) and PRTS 刻俄柏 (S2 "攻击间隔缩短(*0.6)" / "较大幅度缩短(*0.4)": a ratio of the
+// interval; 剥壳 备注 "处理敌人防御力时不考虑物理穿透", "<X模组>每次攻击与上一次攻击相同的目标时，将提升5%的比例值（第五次后达到
+// 最大值，于剥壳伤害前处理）；攻击不同目标时比例值立刻重置"; 独行长路 能力生效范围 x-5 and 备注 "天赋判定范围包括刻俄柏所在格，不判定
+// 目标的可选性、实体类型等；天赋生效期间检测到敌人类我方单位时不会主动失效，但失效期间检测到敌人类我方单位后，直到该敌人类我方单位退场前
+// 无法重新生效", "<Y模组>本天赋不再通过原本的判定方式生效/失效…部署时检测到敌人类我方单位也会失效").
+// - Trait (中坚术师) "攻击造成法术伤害": the profession default (ranged arts, hits air, block 1). Module CCR-X “很干的面包”
+//   adds "无视目标10点法术抗性" (trait bb magic_resist_penetrate_fixed: a permanent resIgnoreFlat), CCR-Y “我打的刀”
+//   "普通攻击命中精英或领袖敌人时获得1点技力" (trait bb sp: per hit of one of her attacks on an elite / leader; a running timed
+//   skill takes no SP, as always).
+// - T1 剥壳 "攻击时对目标额外造成相当于其防御力40%的法术伤害": each hit of her attacks (S3's physical spear too) is followed by
+//   atk_scale × the target's DEF (its current DEF, her own penetration ignored — she has none) as arts damage, a damage
+//   instance of the talent (not an attack: no further on-hit effects). A target with no DEF takes none (PRTS: she "tries"
+//   and deals nothing; no flat arts bonus exists in this mode that a zero hit could carry). CCR-X stage 2+ (bb
+//   basic_atk_scale / delta_atk_scale / max_atk_scale): 50 % +5 % per consecutive hit on the same target, ≤ 75 %, back to
+//   50 % on another target (PRTS 备注), counted from the start of each deployment [ASSUMED].
+// - T2 独行长路 "当周围四格内没有其他友方单位时，攻击力+8%，攻击速度+8": while no other ally unit (operator, summon or device —
+//   PRTS: no selectability / entity check) stands on her tile or the four next to it (x-5), with the 敌人类我方单位 rule
+//   of the 备注 (炎佑: an ally built from an enemy record; it does not switch the talent off, but one seen while it is off
+//   keeps it off until that unit leaves the field). CCR-Y stage 2+ ("部署时若周围四格内没有其他友方单位，攻击力+15%，攻击速度
+//   +15"): checked once per deployment — an ally of either kind there switches it off for that deployment; the battle's
+//   initial deployment counts as one moment, every board piece already placed [ASSUMED: the pieces of the mode are on the
+//   board together before the battle starts; the official deploys one at a time].
+// - S1 “很冰的斧” (AUTO, 可充能 1 / 2, data DEFAULT): the next attack at atk_scale × ATK, on an enemy that nobody blocks first
+//   (the usual order among those, then the blocked ones), binding (束缚) it for `duration` s.
+// - S2 “很热的刀” (MANUAL, 33 / 36 s, data DEFAULT): attack interval × base_attack_time (0.6 / 0.4: PRTS "(*0.4)"), the
+//   highest-DEF enemy first.
+// - S3 “很重的枪” (MANUAL, 56 / 57 s, data ACTIVE_RANGE on 3-3): attack range 3-3 while it runs, ATK +atk, physical damage,
+//   the lowest-DEF enemy first, each hit silences (失去特殊能力) for attack@silence s.
+// - No summon (the forms list no token).
+
+import { num, talentBb, traitBb, skillRec, statBuff, toggleBuff, batMod, giveSp, up } from '../shared/tier1.js';
+import { sortEnemyTargets } from '../../../targeting.js';
+import { offsetTile } from '../../../dir.js';
+import { hasHp } from '../../../damage.js';
+
+const S1 = 'skchr_cerber_1';
+const S2 = 'skchr_cerber_2';
+const S3 = 'skchr_cerber_3';
+/** 独行长路's area: her tile and the four next to it (PRTS 能力生效范围 x-5; the data carries no talent grid). */
+const X5 = Object.freeze([[0, 0], [1, 0], [-1, 0], [0, 1], [0, -1]]);
+/** S3's 3-3 when the data carries no grid. */
+const R33 = Object.freeze([[1, 0], [1, 1], [1, 2], [1, 3], [0, 0], [0, 1], [0, 2], [0, 3], [-1, 0], [-1, 1], [-1, 2], [-1, 3]]);
+/** 剥壳's extra damage (a talent instance: never itself followed by 剥壳). */
+const SHELL_TAG = 'cerber:shell';
+const LONE_KEY = 'talent:cerber:lone';
+
+const bbOf = (chess, id) => skillRec(chess, id)?.bb ?? {};
+/** An elite or leader enemy (精英或领袖敌人). */
+const isEliteEnemy = (e) => !!e && e.side === 'enemy' && (e.isBoss || e.def?.rank === 'ELITE' || e.def?.rank === 'BOSS');
+const tagged = (d, tag) => !!(d && d.tags && d.tags.includes(tag));
+/** A module trait that works 在集成战略中 only (ISW modules): nothing of it applies in this mode. */
+const roguelikeOnly = (chess) => /集成战略/.test(String(chess?.trait?.moduleDesc ?? ''));
+/** Named talent `i` of the record (its desc tells the module stage's wording). */
+const talentRec = (chess, i) => (chess?.talents ?? []).filter((t) => t && t.index !== -1)[i] ?? null;
+/** PRTS's 敌人类我方单位: an ally built from an enemy record (炎佑 enemy_9012_acloon, content/items/battle.js). */
+const enemyLike = (a) => /^enemy_/.test(String(a?.defId ?? a?.def?.id ?? ''));
+
+/** The other ally units on her x-5 (any kind — PRTS: "不判定目标的可选性、实体类型等"). */
+function othersAround(battle, unit) {
+  const out = [];
+  for (const [dr, dc] of X5) {
+    const [r, c] = offsetTile(unit.tileR, unit.tileC, dr, dc, unit.dir);
+    const o = battle.grid.inBounds(r, c) ? battle.unitAt(r, c) : null;
+    if (o && o !== unit && o.side === 'ally' && !out.includes(o)) out.push(o);
+  }
+  return out;
+}
+
+export default {
+  char_2013_cerber: (bb, chess) => {
+    const t0 = talentBb(chess, 0), t1 = talentBb(chess, 1);
+    const onDeploy = /部署时/.test(String(talentRec(chess, 1)?.desc ?? ''));   // CCR-Y stage 2+
+    const b1 = bbOf(chess, S1), b2 = bbOf(chess, S2), b3 = bbOf(chess, S3);
+    const s1 = skillRec(chess, S1), s2 = skillRec(chess, S2), s3 = skillRec(chess, S3);
+    return {
+      skills: {
+        [S1]: {
+          kind: num(s1?.maxChargeTime, 1) > 1 ? 'charges' : 'instant',
+          attack: { atkScale: num(b1.atk_scale, 1), onHitStatus: { key: 'bind', duration: num(b1.duration) } },
+        },
+        [S2]: {
+          kind: 'duration',
+          mods: { batPct: batMod(b2.base_attack_time, chess, s2?.desc) },
+          targeting: { priority: 'highDef' },
+        },
+        [S3]: {
+          kind: 'duration',
+          mods: { atkPct: num(b3.atk) },
+          targeting: { rangeGrid: s3?.rangeGrid ?? R33, priority: 'lowDef' },
+          attack: { dmgType: 'phys', onHitStatus: { key: 'silence', duration: num(b3['attack@silence']) } },
+        },
+      },
+      talents: [
+        { install(battle, unit) { // 剥壳: DEF × ratio arts after each hit; CCR-X stage 2+: the ratio climbs on the same target
+          const base = num(t0.basic_atk_scale, num(t0.atk_scale)), delta = num(t0.delta_atk_scale), top = num(t0.max_atk_scale, base);
+          if (!(base > 0)) return;
+          battle.on('deploy', (ctx) => { if (ctx.unit === unit) { unit.mem.cerberShellTarget = null; unit.mem.cerberShellScale = base; } }, { owner: unit });
+          battle.on('damaged', (ctx) => {
+            const t = ctx.target, d = ctx.dmg;
+            if (ctx.source !== unit || !t || t.side !== 'enemy' || !d || !d.isAttack || d.isSplash || tagged(d, SHELL_TAG)) return;
+            let sc = base;
+            if (delta > 0) {
+              // "于剥壳伤害前处理": the same target as her previous hit +delta (≤ max), another one back to the base
+              sc = unit.mem.cerberShellTarget === t ? Math.min(top, num(unit.mem.cerberShellScale, base) + delta) : base;
+              unit.mem.cerberShellTarget = t;
+              unit.mem.cerberShellScale = sc;
+            }
+            const def = t.s.def;
+            if (def > 0 && hasHp(t)) battle.dealDamage(unit, t, { amount: def * sc, type: 'arts', tags: [SHELL_TAG] });
+          }, { owner: unit });
+        } },
+        { install(battle, unit) { // 独行长路
+          const mods = { atkPct: num(t1.atk), aspd: num(t1.attack_speed) };
+          if (!mods.atkPct && !mods.aspd) return;
+          if (onDeploy) {
+            // CCR-Y stage 2+: the deployment's check, for the whole deployment
+            const check = () => {
+              if (!up(unit)) return;
+              if (othersAround(battle, unit).length) battle.removeBuff(unit, LONE_KEY);
+              else battle.addBuff(unit, { key: LONE_KEY, mods, tags: ['talent'] });
+            };
+            battle.on('battleStart', check, { owner: unit });
+            battle.on('deploy', (ctx) => { if (ctx.unit === unit && battle.started) check(); }, { owner: unit });
+            return;
+          }
+          // the base talent, checked every tick: an ordinary ally switches it off; an enemy-like one seen while it is off
+          // keeps it off until that unit leaves the field
+          let on = false;
+          const locks = new Set();
+          battle.on('tick', () => {
+            if (!up(unit)) { on = false; locks.clear(); return; }
+            const near = othersAround(battle, unit);
+            if (on && near.some((a) => !enemyLike(a))) on = false;
+            if (!on) {
+              for (const a of near) if (enemyLike(a)) locks.add(a);
+              for (const a of locks) if (!a.alive || !a.deployed) locks.delete(a);
+              if (!near.length && !locks.size) on = true;
+            }
+          }, { owner: unit, priority: 1 });
+          toggleBuff(battle, unit, LONE_KEY, () => on, mods);
+        } },
+      ],
+      install(battle, unit) {
+        // module traits (none on the normal form): CCR-X 无视目标10点法术抗性, CCR-Y SP per hit on an elite / leader
+        if (!roguelikeOnly(chess)) {
+          const tb = traitBb(chess);
+          const pen = num(tb.magic_resist_penetrate_fixed);
+          if (pen > 0) statBuff(battle, unit, 'trait:cerber:resIgnore', { resIgnoreFlat: pen });
+          const sp = num(tb.sp);
+          if (sp > 0) {
+            battle.on('damaged', (ctx) => {
+              const d = ctx.dmg;
+              if (ctx.source !== unit || !d || !d.isAttack || d.isSplash || !isEliteEnemy(ctx.target)) return;
+              giveSp(unit, sp, 'trait');
+            }, { owner: unit });
+          }
+        }
+        if (unit.skill?.id === S1) {
+          // “很冰的斧” "优先攻击没有被阻挡的目标": the pending attack re-picks its target, unblocked enemies first
+          battle.on('beforeAttack', (ctx) => {
+            if (ctx.attacker !== unit || !ctx.isSkill || !ctx.targets.length) return;
+            const prof = ctx.profile;
+            const cands = battle.enemiesInKeys(unit.rangeKeys, unit, prof);
+            for (const e of battle.blockedTargets(unit, prof)) if (!cands.includes(e)) cands.push(e);
+            if (!cands.length) return;
+            sortEnemyTargets(battle, unit, cands, prof.priority);
+            ctx.targets = [cands.find((e) => !e.blockedBy) ?? cands[0]];
+          }, { owner: unit });
+        }
+      },
+    };
+  },
+};
diff --git a/server/sim/content/kits/ops/op-heyak.js b/server/sim/content/kits/ops/op-heyak.js
new file mode 100644
index 00000000..29e60eb4
--- /dev/null
+++ b/server/sim/content/kits/ops/op-heyak.js
@@ -0,0 +1,275 @@
+// server/sim/content/kits/ops/op-heyak.js — 霍尔海雅 (char_4027_heyak) 自选 operator kit: 6★ 中坚术师 (术师), an owned-6★
+// pick of the tier-5 and tier-6 自选 slots; every skill, both talents, the trait and the three modules at every form.
+// Kit contract and the 自选 rules: ../README.md ("How to add an operator (自选)").
+//
+// Forms (data/backups.json units.char_4027_heyak, the DIY slot statuses): normal = E2 Lv1, skills at rank 4, no module;
+// elite = E2 Lv60, rank 7, the picked module at stage 1 (tier 5) or 3 (tier 6). Potential 0 [ASSUMED: no account].
+// Sources: character_table / skill_table / battle_equip_table (zh_CN, as built into backups.json) and PRTS 霍尔海雅
+// (传承终焉 备注 "技能触发的浮空效果于本天赋结算前进行结算"; S1 备注 "“仅攻击到1名目标”仅判定实际发射的弹道数"; S3 备注 "攻击以自身格
+// 中心处为准，于此处、左1.0、右1.0格在0~0.3s内随机延迟后生成三股旋风", "移动速度1.0，碰撞范围为1×1的正方形，旋风移动至5格远处中心点
+// 自然消失，造成伤害时实时应用霍尔海雅的当前攻击力", "旋风在生成后1.77s内，攻击倍率由最低值线性递增至最大值", "霍尔海雅离场时已存在的旋风
+// 不会因此立刻消失，但其命中敌人时不享受模组加成，不触发第一天赋").
+// - Trait (中坚术师) "攻击造成法术伤害": the profession default (ranged arts, hits air, block 1). Module CCR-X “图书馆” adds
+//   "无视目标10点法术抗性" (trait bb magic_resist_penetrate_fixed: a permanent resIgnoreFlat), CCR-Y “羽蛇的时间博物馆”
+//   "普通攻击命中精英或领袖敌人时获得1点技力" (trait bb sp: per hit of one of her attacks on an elite / leader; a running timed
+//   skill takes no SP). ISW-A “霍尔海雅特限证章”: its trait "在集成战略中，无视目标10点法术抗性，每个敌人首次进入目标点所在地块时，恢复
+//   自身30%的技力" and its hidden talents (首次部署 1 点临时目标生命值, the goal-tile 浮空 15 s, stage 3's radius-1.1 skill
+//   splash "自身技能会对敌人及其周围的目标同时造成浮空效果和伤害效果") are battle_equip_table parts with `validInGameTag:
+//   roguelike` — N/A here; what applies is its stats and, at stage 2+, 传承终焉's new numbers (a TALENT_DATA_ONLY part with
+//   no game tag: 145 % / 5 s at stage 3).
+// - T1 传承终焉 "攻击空中目标时攻击力提升至120%，并使其特殊能力失效3秒": every hit of her attacks on an air unit (flying, 近地悬浮
+//   or 浮空) at the hit is × atk_scale and silences it for `silence` s. Her skills' 浮空 of that very hit resolve first (PRTS
+//   备注), so a target her S1 / S2 / S3 lifts takes the ×atk_scale of that hit: the S1 / S2 lifts land in the hit's `hit`
+//   step, ahead of this talent (a dodged hit has lifted already [ASSUMED]). CCR-X stage 3: 135 % / 5 s, ISW-A stage 3:
+//   145 % / 5 s (the talent's merged bb).
+// - T2 曾有羽翼 "攻击范围内所有生命值高于80%的敌人失重": every enemy of her current attack range (a running S3's included) above
+//   hp_ratio of its HP is 失重 (weight −1 level, 同名效果不可叠加: none of hers while another source's 失重 is on it), off
+//   again at once below it or outside the range. CCR-Y stage 3 lowers it to 50 % and adds "生命值低于50%的敌人获得20%的
+//   【法术脆弱】" (its hidden talent: damage_scale 1.2, hp_ratio 0.5): the 法术脆弱 status, renewed every 0.2 s for 0.3 s
+//   (as 史尔特尔 AFT-Y's).
+// - S1 但为求索 (AUTO, 可充能 1 / 2, data DEFAULT): the next attack hits one more target (2), atk_scale × ATK arts each; when
+//   it fires at one target only it lifts it (浮空) `levitate` s — counted at the shot (PRTS 备注).
+// - S2 群星逶迤 (MANUAL, 16 s, data DEFAULT): each attack becomes SHOTS (9, the text's "9连发"; no blackboard key) shots of
+//   attack@atk_scale × ATK, each at a random enemy of her range (independent draws), each with attack@prob to lift it
+//   attack@levitate s [ASSUMED: the nine leave with the attack; the burst's spacing is not modelled].
+// - S3 博览者的狂语 (MANUAL, 45 s, data ACTIVE_RANGE on 3-10): attack range 3-10 while it runs, attack interval +1.4 s
+//   (base_attack_time, flat); each attack (an enemy in that range, her attack timer) releases three whirlwinds from the
+//   centre of her tile and the tiles left and right of it, each after its own random 0–0.3 s delay. A whirlwind flies
+//   straight forward at 1 tile/s over 5 tiles (PRTS; a 1×1 square), hits the first enemy it touches — an enemy her
+//   attacks can select, air units too [ASSUMED] — lifting it attack@levitate s and then dealing (min + (max − min) ×
+//   min(1, age / 1.77 s)) × her current ATK arts (attack@min_atk_scale → attack@max_atk_scale), and is gone; the nearest
+//   of several touched at once is hit first [ASSUMED]. A whirlwind out when she leaves the field flies on, without 传承终焉
+//   and without her module's RES ignore [ASSUMED: "模组加成" = the module's trait; its attributes stay in her ATK].
+//   (wiki.gg reads the end of the flight as the far end of her range, 4 tiles; PRTS's 5 is kept.)
+// - No summon (the forms list no token).
+
+import { num, talentBb, traitBb, skillRec, statBuff, batMod, giveSp, onHitBy, up } from '../shared/tier1.js';
+import { canTargetEnemy } from '../../../targeting.js';
+import { dirVec, rotateOffset } from '../../../dir.js';
+import { bodyDist, hitRect } from '../../../body.js';
+
+const S1 = 'skchr_heyak_1';
+const S2 = 'skchr_heyak_2';
+const S3 = 'skchr_heyak_3';
+/** S1 "额外攻击一个目标": the next attack's targets (no blackboard key; `cnt` is the charge count). */
+const S1_TARGETS = 2;
+/** S2 "9连发": shots per attack when the text gives no number (no blackboard key). */
+const SHOTS = 9;
+/** S3 whirlwinds (PRTS 备注): lanes (facing-RIGHT row offsets: her row, "左1.0", "右1.0"), spawn delay, speed, flight, box. */
+const WIND_LANES = Object.freeze([0, 1, -1]);
+const WIND_DELAY = 0.3;
+const WIND_SPEED = 1;
+const WIND_RANGE = 5;
+const WIND_HALF = 0.5;
+/** "旋风在生成后1.77s内，攻击倍率由最低值线性递增至最大值". */
+const WIND_RAMP = 1.77;
+/** How often a flying whirlwind is drawn again (fx 'tornado'). */
+const WIND_FX_EVERY = 0.5;
+/** S3's 3-10 when the data carries no grid. */
+const R310 = Object.freeze([[1, 0], [1, 1], [1, 2], [1, 3], [1, 4], [0, 0], [0, 1], [0, 2], [0, 3], [0, 4], [-1, 0], [-1, 1], [-1, 2], [-1, 3], [-1, 4]]);
+/** A whirlwind hit after she left the field: no 传承终焉, no module trait (PRTS 备注). */
+const AWAY_TAG = 'heyak:away';
+const WEIGHTLESS_KEY = 'heyak:weightless';
+const FRAGILE_EVERY = 0.2;
+
+const bbOf = (chess, id) => skillRec(chess, id)?.bb ?? {};
+/** An elite or leader enemy (精英或领袖敌人). */
+const isEliteEnemy = (e) => !!e && e.side === 'enemy' && (e.isBoss || e.def?.rank === 'ELITE' || e.def?.rank === 'BOSS');
+const tagged = (d, tag) => !!(d && d.tags && d.tags.includes(tag));
+/** A module trait that works 在集成战略中 only (ISW-A): nothing of it applies in this mode. */
+const roguelikeOnly = (chess) => /集成战略/.test(String(chess?.trait?.moduleDesc ?? ''));
+/** The record's active module, or null. */
+const activeModule = (chess) => (chess?.module?.active ? (chess.modules ?? []).find((m) => m && m.uniEquipId === chess.module.id) ?? null : null);
+/** Does the enemy's body touch the 1×1 square centred on (x, y)? */
+function inBox(e, x, y) {
+  const R = hitRect(e);
+  if (!R) return Math.abs(e.x - x) <= WIND_HALF + 1e-9 && Math.abs(e.y - y) <= WIND_HALF + 1e-9;
+  return R.x0 <= x + WIND_HALF && R.x1 >= x - WIND_HALF && R.y0 <= y + WIND_HALF && R.y1 >= y - WIND_HALF;
+}
+
+export default {
+  char_4027_heyak: (bb, chess) => {
+    const t0 = talentBb(chess, 0), t1 = talentBb(chess, 1);
+    const isw = roguelikeOnly(chess);
+    const mod = activeModule(chess);
+    // CCR-Y's hidden part (the 【法术脆弱】 rider); an ISW module's hidden parts are 集成战略-only
+    const rider = isw || !mod ? {} : Object.assign({}, ...(mod.talentChanges ?? []).filter((t) => t && t.talentIndex === -1).map((t) => t.bb ?? {}));
+    const tb = isw ? {} : traitBb(chess);
+    const pen = num(tb.magic_resist_penetrate_fixed);
+    const b1 = bbOf(chess, S1), b2 = bbOf(chess, S2), b3 = bbOf(chess, S3);
+    const s1 = skillRec(chess, S1), s2 = skillRec(chess, S2), s3 = skillRec(chess, S3);
+    const shots = Math.max(1, Math.floor(num(+(/(\d+)连发/.exec(String(s2?.desc ?? ''))?.[1]), SHOTS)));
+
+    /** S3: release one attack's three whirlwinds. */
+    function releaseWinds(battle, unit, winds) {
+      const seq = unit.deploySeq;
+      const [fr, fc] = dirVec(unit.dir);
+      const x0 = unit.tileC, y0 = unit.tileR;
+      for (const lane of WIND_LANES) {
+        const [dr, dc] = rotateOffset(lane, 0, unit.dir);
+        const delay = battle.rng.range(0, WIND_DELAY);
+        battle.after(delay, () => {
+          // a whirlwind not yet out when she left is never released [ASSUMED: "已存在的旋风" only fly on]
+          if (!(unit.alive && unit.deployed && unit.deploySeq === seq)) return;
+          const w = { x: x0 + dc, y: y0 + dr, dx: fc, dy: fr, left: WIND_RANGE, age: 0, fxAge: 0, seq };
+          battle.fx('tornado', { x: w.x, y: w.y, id: unit.id, r: WIND_HALF, dur: WIND_FX_EVERY + 0.1 });
+          if (!windHit(battle, unit, w)) winds.push(w);
+        }, { owner: unit });
+      }
+    }
+    /** The first enemy the whirlwind touches, struck: 浮空 first (PRTS: before 传承终焉), then the damage. True when it hit. */
+    function windHit(battle, unit, w) {
+      let best = null, bd = Infinity;
+      for (const e of battle.enemies) {
+        if (!e.alive || !inBox(e, w.x, w.y) || !canTargetEnemy(unit, e, unit.profile)) continue;
+        const d = bodyDist(e, w.x, w.y);
+        if (d < bd - 1e-9 || (Math.abs(d - bd) <= 1e-9 && best && e.spawnSeq < best.spawnSeq)) { bd = d; best = e; }
+      }
+      if (!best) return false;
+      const away = !(unit.alive && unit.deployed && unit.deploySeq === w.seq);
+      const lev = num(b3['attack@levitate']);
+      if (lev > 0) battle.applyStatus(best, 'levitate', { duration: lev, source: unit });
+      const lo = num(b3['attack@min_atk_scale']), hi = num(b3['attack@max_atk_scale'], lo);
+      const scale = lo + (hi - lo) * Math.min(1, w.age / WIND_RAMP);
+      if (best.alive) {
+        battle.dealDamage(unit, best, {
+          amount: unit.s.atk * scale, type: 'arts', isAttack: true, isSkill: true,
+          ...(away ? { resIgnoreFlat: -pen, tags: [AWAY_TAG] } : null),
+        });
+      }
+      battle.fx('tornadoPulse', { x: w.x, y: w.y, id: unit.id, r: WIND_HALF });
+      return true;
+    }
+
+    return {
+      skills: {
+        [S1]: {
+          kind: num(s1?.maxChargeTime, 1) > 1 ? 'charges' : 'instant',
+          targeting: { maxTargets: S1_TARGETS },
+          attack: { atkScale: num(b1.atk_scale, 1) },
+        },
+        [S2]: {
+          kind: 'duration',
+          attack: { atkScale: num(b2['attack@atk_scale'], 1) },
+        },
+        [S3]: {
+          kind: 'duration',
+          mods: { batPct: batMod(b3.base_attack_time, chess) },
+          targeting: { rangeGrid: s3?.rangeGrid ?? R310 },
+          // the attack becomes the whirlwinds (onTick): her attack timer, an enemy of the skill's range, no projectile
+          attack: { noAttack: true },
+          onTick({ battle, unit }) {
+            if (unit.atkCd > 0 || !unit.canAct || unit.s.flags.disarm) return;
+            const foes = battle.enemiesInKeys(unit.rangeKeys, unit, unit.profile);
+            if (!foes.length) return;
+            unit.atkCd = unit.s.interval;
+            unit.lastAttackAt = battle.time;
+            unit.stats.attacks++;
+            releaseWinds(battle, unit, unit.mem.heyakWinds);
+            // an attack was performed ("攻击时" content), the whirlwinds still on their way
+            if (battle.hasHook('attack')) battle.emit('attack', { attacker: unit, targets: foes.slice(0, 1), isSkill: true });
+          },
+        },
+      },
+      talents: [
+        { install(battle, unit) { // 传承终焉: × atk_scale and 沉默 on an air unit hit by her attack
+          const sc = num(t0.atk_scale, 1), sil = num(t0.silence);
+          onHitBy(battle, unit, (ctx) => {
+            const d = ctx.dmg, t = ctx.target;
+            if (!d.isAttack || tagged(d, AWAY_TAG) || !t.isFlying) return;
+            if (sc !== 1) d.amount *= sc;
+            if (sil > 0 && t.alive) battle.applyStatus(t, 'silence', { duration: sil, source: unit });
+          });
+        } },
+        { install(battle, unit) { // 曾有羽翼: 失重 above hp_ratio in her range; CCR-Y stage 3: 【法术脆弱】 below its hp_ratio
+          const hiRatio = num(t1.hp_ratio, 1);
+          battle.on('tick', () => {
+            const on = up(unit);
+            const inRange = on ? new Set(battle.enemiesInKeys(unit.rangeKeys, unit, { canHitFly: true })) : null;
+            for (const e of battle.enemies) {
+              if (!e.alive) continue;
+              // (another 霍尔海雅's 失重 carries the same key: it is hers to keep or drop)
+              const mine = e.findBuff(WEIGHTLESS_KEY);
+              const want = on && inRange.has(e) && e.hpRatio > hiRatio + 1e-9
+                && !e.buffs.some((b) => b.status === 'weightless' && b.key !== WEIGHTLESS_KEY);
+              if (want && !mine) battle.addBuff(e, { key: WEIGHTLESS_KEY, status: 'weightless', visible: true, mods: { massFlat: -1 }, source: unit });
+              else if (!want && mine && mine.source === unit) battle.removeBuff(e, mine);
+            }
+          }, { owner: unit });
+          const fragile = Math.round((num(rider.damage_scale, 1) - 1) * 1e6) / 1e6, loRatio = num(rider.hp_ratio);   // 1.2 → 0.2
+          if (fragile > 0) {
+            battle.every(FRAGILE_EVERY, () => {
+              if (!up(unit)) return;
+              for (const e of battle.enemiesInKeys(unit.rangeKeys, unit, { canHitFly: true })) {
+                if (e.hpRatio < loRatio - 1e-9) battle.applyStatus(e, 'artsFragile', { duration: FRAGILE_EVERY + 0.1, value: fragile, source: unit });
+              }
+            }, { owner: unit, immediate: true });
+          }
+        } },
+      ],
+      install(battle, unit) {
+        // module traits (none on the normal form, nothing of ISW-A's): CCR-X RES ignore, CCR-Y SP per hit on an elite / leader
+        if (pen > 0) statBuff(battle, unit, 'trait:heyak:resIgnore', { resIgnoreFlat: pen });
+        const sp = num(tb.sp);
+        if (sp > 0) {
+          battle.on('damaged', (ctx) => {
+            const d = ctx.dmg;
+            if (ctx.source !== unit || !d || !d.isAttack || d.isSplash || tagged(d, AWAY_TAG) || !isEliteEnemy(ctx.target)) return;
+            giveSp(unit, sp, 'trait');
+          }, { owner: unit });
+        }
+        const sid = unit.skill?.id;
+        if (sid === S1) {
+          // 但为求索: the shot count decides the 浮空 (PRTS: the shots fired, whatever happens in flight)
+          const lev = num(b1.levitate);
+          battle.on('beforeAttack', (ctx) => {
+            if (ctx.attacker !== unit || !ctx.isSkill) return;
+            unit.mem.heyakLift = ctx.targets.length === 1 ? ctx.targets[0] : null;
+          }, { owner: unit, priority: -10 });
+          onHitBy(battle, unit, (ctx) => { // before 传承终焉 (priority 0): the lift is settled first
+            const d = ctx.dmg;
+            if (!d.isAttack || !d.isSkill || unit.mem.heyakLift !== ctx.target) return;
+            unit.mem.heyakLift = null;
+            if (lev > 0) battle.applyStatus(ctx.target, 'levitate', { duration: lev, source: unit });
+          }, 10);
+        } else if (sid === S2) {
+          // 群星逶迤: the nine shots, each at a random enemy of her range, each rolling its 浮空 before 传承终焉
+          const prob = num(b2['attack@prob']), lev = num(b2['attack@levitate']);
+          battle.on('beforeAttack', (ctx) => {
+            if (ctx.attacker !== unit || !unit.skill?.active || !ctx.targets.length) return;
+            const cands = battle.enemiesInKeys(unit.rangeKeys, unit, ctx.profile);
+            for (const e of battle.blockedTargets(unit, ctx.profile)) if (!cands.includes(e)) cands.push(e);
+            if (!cands.length) return;
+            const out = [];
+            for (let i = 0; i < shots; i++) out.push(battle.rng.pick(cands));
+            ctx.targets = out;
+          }, { owner: unit });
+          onHitBy(battle, unit, (ctx) => {
+            const d = ctx.dmg;
+            if (!d.isAttack || !d.isSkill || !(prob > 0) || !(lev > 0)) return;
+            if (battle.rng.chance(prob)) battle.applyStatus(ctx.target, 'levitate', { duration: lev, source: unit });
+          }, 10);
+        } else if (sid === S3) {
+          // 博览者的狂语: the whirlwinds in flight (also after she left the field)
+          const winds = (unit.mem.heyakWinds = []);
+          battle.on('tick', ({ dt }) => {
+            for (let i = winds.length - 1; i >= 0; i--) {
+              const w = winds[i];
+              const step = Math.min(WIND_SPEED * dt, w.left);
+              w.x += w.dx * step;
+              w.y += w.dy * step;
+              w.left -= step;
+              w.age += dt;
+              if (windHit(battle, unit, w) || w.left <= 1e-9) { winds.splice(i, 1); continue; }
+              w.fxAge += dt;
+              if (w.fxAge + 1e-9 >= WIND_FX_EVERY) {
+                w.fxAge = 0;
+                battle.fx('tornado', { x: w.x, y: w.y, id: unit.id, r: WIND_HALF, dur: WIND_FX_EVERY + 0.1 });
+              }
+            }
+          }, { owner: unit });
+        }
+      },
+    };
+  },
+};
diff --git a/test/content/op_amgoat.test.js b/test/content/op_amgoat.test.js
new file mode 100644
index 00000000..805a223d
--- /dev/null
+++ b/test/content/op_amgoat.test.js
@@ -0,0 +1,330 @@
+// test/content/op_amgoat.test.js — the 自选 operator kit of 艾雅法拉 (char_180_amgoat, 6★ 中坚术师; kit
+// server/sim/content/kits/ops/op-amgoat.js), fielded the production way (a DIY slot + its `diy` pick, simdata getDiy) in
+// every form: tiers 5 / 6, normal (E2 Lv1, skill rank 4, no module) and elite (E2 Lv60, rank 7) with no module, CCR-X
+// “错过的声音” or CCR-Y “宠物大赛第一名” at stage 1 (tier 5) / 3 (tier 6). Every number is read back from data/backups.json
+// (the form of that slot status); the fidelity checklist of kits/README.md item by item.
+// Run: node --test test/content/op_amgoat.test.js
+
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { makeBattle, enemyRec, checkInvariants } from '../helpers/battleHarness.js';
+import { KITTED_CHARS, OPERATOR_KITS, KITS } from '../../server/sim/content/kits/index.js';
+import { diyPool, validateDiyPicks } from '../../shared/diy.js';
+
+const load = (f) => JSON.parse(readFileSync(new URL(`../../data/${f}.json`, import.meta.url), 'utf8'));
+const CHESS = load('chess');
+const BACKUPS = load('backups');
+const ID = 'char_180_amgoat';
+const FORMS = BACKUPS.units[ID].forms;
+const SLOT = { 5: 'chess_char_5_diy1_a', 6: 'chess_char_6_diy1_a' };
+const CCRX = 'uniequip_002_amgoat', CCRY = 'uniequip_003_amgoat';
+const S1 = 'skchr_amgoat_1', S2 = 'skchr_amgoat_2', S3 = 'skchr_amgoat_3';
+const formOf = (tier, elite) => FORMS[elite ? (tier === 5 ? '2/60/7/1' : '2/60/7/3') : '2/1/4/0'];
+const skillOf = (tier, elite, id) => formOf(tier, elite).skills.find((s) => s.skillId === id);
+const modOf = (tier, mod) => (mod ? formOf(tier, true).modules.find((m) => m.uniEquipId === mod) : null);
+const approx = (a, b, msg, eps = 1e-6) => assert.ok(Math.abs(a - b) <= eps * Math.max(1, Math.abs(b)), `${msg}: ${a} vs ${b}`);
+const dummy = (key, o = {}) => enemyRec({ key, hp: 1e9, speed: 0, mass: 0, res: 50, ...o });
+const ENEMIES = {
+  enemy_dummy: dummy('enemy_dummy'), enemy_fly: dummy('enemy_fly', { motion: 'FLY' }),
+  enemy_elite: dummy('enemy_elite', { rank: 'ELITE' }), enemy_boss: dummy('enemy_boss', { rank: 'BOSS' }),
+};
+/** Every 自选 form: [tier, elite, module]. */
+const FORMS_ALL = [[5, false, null], [6, false, null], ...[5, 6].flatMap((t) => [null, CCRX, CCRY].map((m) => [t, true, m]))];
+const label = ([tier, elite, mod]) => `T${tier} ${elite ? 'elite' : 'normal'} ${mod ?? 'none'}`;
+
+/** A battle with 艾雅法拉 as uid 1 at (row, col) facing RIGHT, plus `others`. */
+function field({ tier = 5, elite = false, mod = null, skill = 2, row = 10, col = 5, others = [], seed = 5, setup = null } = {}) {
+  const h = makeBattle({
+    defs: { enemies: ENEMIES }, timeLimit: 900, autoFinish: false, seed,
+    flags: { dpPerSec: 0, dpMax: 999 }, hooks: ['damaged', 'skillStart', 'skillEnd', 'statusApplied', 'spGain', 'deploy'], captureNoisy: true,
+    units: [{ uid: 1, diy: { slot: SLOT[tier], charId: ID, skillIndex: skill, uniEquipId: mod }, elite, row, col }, ...others],
+    setup,
+  });
+  h.step();
+  return { h, u: h.unit(1) };
+}
+const hitsBy = (h, u) => h.hooksOf('damaged').filter((c) => c.source === u);
+function done(h) {
+  checkInvariants(h.b);
+  assert.equal(h.b.errors.length, 0, JSON.stringify(h.b.errors[0]));
+}
+/** Arts damage of `amount` on RES `res` with `ignore` flat RES ignored. */
+const arts = (amount, res, ignore = 0) => Math.max(amount * (1 - Math.max(0, res - ignore) / 100), amount * 0.05);
+
+test('艾雅法拉 in every 自选 form: her operator kit (all three skills authored), the form\'s stats + module attributes, 3-1 range, ranged arts that hits air, block 1, 1.6 s, 空 bonds, no 特质', () => {
+  assert.equal(OPERATOR_KITS[ID], KITS[ID]);
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    for (const skill of [0, 1, 2]) {
+      const { h, u } = field({ tier, elite, mod, skill });
+      const form = formOf(tier, elite), m = elite ? modOf(tier, mod) : null;
+      assert.deepEqual([u.def.charId, u.def.diyFor, u.skill.id, !!u.kit.generic, u.kit.skillSource], [ID, SLOT[tier], form.skills[skill].skillId, false, 'skills'], label(f));
+      assert.deepEqual([u.base.maxHp, u.base.atk, u.base.def, u.base.res], [form.stats.maxHp + (m?.attr.maxHp ?? 0), form.stats.atk + (m?.attr.atk ?? 0), form.stats.def + (m?.attr.def ?? 0), 20], `${label(f)}: stats`);
+      assert.deepEqual([u.s.blockCnt, u.profile.attack, u.profile.dmgType, u.profile.canHitFly, u.profile.groundOnly, u.base.bat], [1, 'ranged', 'arts', true, false, 1.6], `${label(f)}: 中坚术师`);
+      assert.deepEqual(u.liveRangeGrid, form.rangeGrid, `${label(f)}: 3-1`);
+      assert.deepEqual([u.def.bonds, u.def.raw.garrisonIds, u.def.raw.tokens], [['emptyShip'], [], []], `${label(f)}: bonds / 特质 / no summon`);
+      assert.ok(!u.s.flags.liftoff && !u.s.flags.camou && !u.s.flags.stealth && !u.s.flags.untargetable, `${label(f)}: ground enemies target her`);
+      done(h);
+    }
+  }
+  // the numbers of the forms (zh_CN): E2 Lv1 1359 / 535 / 109, E2 Lv60 1614 / 608 / 118; CCR-X +130 / +40 → +180 / +65,
+  // CCR-Y +180 / +25 → +230 / +50 HP / ATK
+  assert.deepEqual([FORMS['2/1/4/0'].stats.maxHp, FORMS['2/1/4/0'].stats.atk, FORMS['2/60/7/1'].stats.maxHp, FORMS['2/60/7/1'].stats.atk], [1359, 535, 1614, 608]);
+  assert.deepEqual([modOf(5, CCRX).attr, modOf(6, CCRX).attr, modOf(5, CCRY).attr, modOf(6, CCRY).attr], [{ maxHp: 130, atk: 40 }, { maxHp: 180, atk: 65 }, { maxHp: 180, atk: 25 }, { maxHp: 230, atk: 50 }]);
+});
+
+test('a 自选 pick: 艾雅法拉 is offered at tiers 5 and 6 (she has a kit) and a roster with her passes validateDiyPicks', () => {
+  const data = { chess: CHESS, backups: BACKUPS };
+  assert.ok(KITTED_CHARS.includes(ID));
+  for (const t of [5, 6]) assert.ok(diyPool(t, { data, kitted: KITTED_CHARS }).includes(ID), `tier ${t}`);
+  assert.deepEqual(validateDiyPicks({ [SLOT[6]]: { charId: ID, skillIndex: 2, uniEquipId: CCRY } }, { data, kitted: KITTED_CHARS }),
+    { ok: true, picks: { [SLOT[6]]: { charId: ID, skillIndex: 2, uniEquipId: CCRY } } });
+});
+
+test('S1 二重咏唱 (MANUAL, data DEFAULT, 25 s): ASPD +38 / +45 on the first cast of a deployment; ASPD and ATK +38 % / +45 % from the second; the count restarts after a redeploy', () => {
+  for (const [tier, elite] of [[5, false], [6, true]]) {
+    const sk = skillOf(tier, elite, S1);
+    const { h, u } = field({ tier, elite, skill: 0 });
+    const a = sk.bb['amgoat_s_1[a].attack_speed'], b = sk.bb['amgoat_s_1[b].attack_speed'], atk = sk.bb['amgoat_s_1[b].atk'];
+    assert.deepEqual([u.skill.rule, sk.duration, sk.spCost, sk.initSp, a, b, atk], ['DEFAULT', 25, elite ? 39 : 42, elite ? 20 : 15, elite ? 45 : 38, elite ? 45 : 38, elite ? 0.45 : 0.38], `T${tier}`);
+    h.run(0.6);
+    const aspd0 = u.s.aspd, atk0 = u.s.atk;
+    u.skill.gainSp(999);
+    h.run(2);
+    assert.equal(u.skill.activations, 0, `T${tier}: no enemy, no cast`);
+    h.spawn('enemy_dummy', { pos: [10, 6] });
+    assert.ok(h.runUntil(() => u.skill.active, 3), `T${tier}: cast with an enemy in her range`);
+    approx(u.skill.timeLeft, 25, `T${tier}: 25 s`, 0.01);
+    assert.deepEqual(u.findBuff('skill:amgoat:duet')?.mods, { aspd: a }, `T${tier}: the first cast`);
+    approx(u.s.aspd, aspd0 + a, `T${tier}: ASPD`);
+    approx(u.s.atk, atk0, `T${tier}: no ATK on the first cast`);
+    assert.ok(h.runUntil(() => !u.skill.active, 26));
+    assert.equal(u.findBuff('skill:amgoat:duet'), null, `T${tier}: gone after it`);
+    u.skill.gainSp(999);
+    assert.ok(h.runUntil(() => u.skill.active, 5), `T${tier}: the second cast`);
+    assert.deepEqual(u.findBuff('skill:amgoat:duet')?.mods, { aspd: b, atkPct: atk }, `T${tier}: the second cast`);
+    approx(u.s.atk, u.base.atk * (1 + 0.14 + atk), `T${tier}: ATK with 炎息`);
+    h.b.retreat(u);
+    h.b.redeploy(u);
+    u.skill.gainSp(999);
+    assert.ok(h.runUntil(() => u.skill.active, 5), `T${tier}: a cast after the redeploy`);
+    assert.deepEqual(u.findBuff('skill:amgoat:duet')?.mods, { aspd: a }, `T${tier}: the count restarted (PRTS 备注)`);
+    done(h);
+  }
+});
+
+test('S2 点燃 (AUTO, 2 charges, data DEFAULT): main target RES ×0.85 / ×0.8 first, ½ explosion on every enemy within 1.5 (flyers too), then ½ again on the main target; the others\' RES cut after their hit, 6 s', () => {
+  for (const [tier, elite, mod] of [[5, false, null], [6, true, null], [6, true, CCRX]]) {
+    const sk = skillOf(tier, elite, S2);
+    const { h, u } = field({ tier, elite, mod, skill: 1 });
+    assert.deepEqual([u.skill.rule, u.skill.kind, u.skill.maxCharges, sk.spCost, sk.bb.atk_scale, sk.bb.atk_scale_2, sk.bb.magic_resistance, sk.bb.duration],
+      ['DEFAULT', 'charges', 2, elite ? 6 : 7, elite ? 1.55 : 1.375, elite ? 1.55 : 1.375, elite ? -0.2 : -0.15, 6], `T${tier}`);
+    const ign = mod === CCRX ? 10 : 0;
+    h.run(0.6);
+    // 乱火 filled 1–2 charges at the deployment: spent before the scene is set
+    u.skill.charges = 0;
+    u.skill.sp = 0;
+    // the main target alone in her range (its tip 0,3); three around it outside the range, one beyond the explosion
+    const main = h.spawn('enemy_dummy', { pos: [10, 8] });
+    const n1 = h.spawn('enemy_dummy', { pos: [10, 9] }), n2 = h.spawn('enemy_dummy', { pos: [11, 9] }), fly = h.spawn('enemy_fly', { pos: [9, 9] });
+    const far = h.spawn('enemy_dummy', { pos: [10, 10] });
+    u.skill.gainSp(999);
+    assert.equal(u.skill.charges, 2);
+    const n0 = hitsBy(h, u).length;
+    assert.ok(h.runUntil(() => hitsBy(h, u).slice(n0).filter((c) => c.target === main).length >= 2, 4), `T${tier}: the ignited attack lands`);
+    h.step();
+    const hits = hitsBy(h, u).slice(n0);
+    const atk = u.s.atk;
+    const cut = 50 * (1 + sk.bb.magic_resistance);
+    const onMain = hits.filter((c) => c.target === main);
+    assert.equal(onMain.length, 2, `T${tier}: two ½ hits on the main target`);
+    for (const c of onMain) approx(c.amount, arts(atk * sk.bb.atk_scale, cut, ign), `T${tier}: ½ on the main target after its RES cut`);
+    for (const e of [n1, n2, fly]) {
+      const hs = hits.filter((c) => c.target === e);
+      assert.equal(hs.length, 1, `T${tier}: one explosion hit on ${e.tileR},${e.tileC}`);
+      approx(hs[0].amount, arts(atk * sk.bb.atk_scale, 50, ign), `T${tier}: ½ before its own RES cut`);
+      assert.deepEqual([hs[0].type, hs[0].dmg.isSplash, hs[0].dmg.isSkill], ['arts', true, true]);
+    }
+    assert.ok(!hits.some((c) => c.target === far), `T${tier}: 2 tiles away — outside the 1.5 explosion`);
+    for (const e of [main, n1, n2, fly]) approx(e.s.res, cut, `T${tier}: RES ×${1 + sk.bb.magic_resistance}`);
+    approx(far.s.res, 50, `T${tier}: untouched`);
+    assert.equal(u.skill.charges, 1, `T${tier}: one charge spent`);
+    // the next attack spends the second charge; the cut stays one (同名效果取最高) and lasts 6 s
+    assert.ok(h.runUntil(() => u.skill.charges === 0, 4));
+    h.run(0.5);
+    approx(main.s.res, cut, `T${tier}: one RES cut, not two`);
+    h.b.retreat(u); // no further ignition: the cut runs out
+    h.run(6.2);
+    approx(main.s.res, 50, `T${tier}: back after 6 s`);
+    done(h);
+  }
+});
+
+test('S3 火山 (MANUAL, data SKILL_RANGE on x-3): 15 s, ATK +70 % / +85 %, interval 1.6 − 1.1 = 0.5 s, range x-3 while on, lava on 4 / 5 random different enemies of it per attack (all when fewer); back after', () => {
+  for (const [tier, elite] of [[5, false], [6, true]]) {
+    const sk = skillOf(tier, elite, S3);
+    const { h, u } = field({ tier, elite, skill: 2, seed: 9 });
+    const n = sk.bb['attack@max_target'];
+    assert.deepEqual([u.skill.rule, sk.trigger.rawRule, sk.rangeId, sk.duration, sk.bb.atk, sk.bb.base_attack_time, n, sk.spCost, sk.initSp],
+      ['SKILL_RANGE', 'DEFAULT', 'x-3', 15, elite ? 0.85 : 0.7, -1.1, elite ? 5 : 4, 80, elite ? 40 : 33], `T${tier}`);
+    assert.deepEqual(u.skill.triggerGrid, sk.rangeGrid, `T${tier}: the trigger grid is x-3`);
+    h.run(0.6);
+    const atk0 = u.s.atk;
+    approx(u.s.interval, 1.6, `T${tier}: own interval`);
+    u.skill.gainSp(999);
+    h.run(1);
+    assert.equal(u.skill.activations, 0, `T${tier}: nobody on x-3`);
+    // seven enemies: x-3 holds (8,5) / (12,5) / (10,2), none of them in her own 3-1
+    const spots = [[10, 6], [9, 7], [11, 7], [10, 8], [8, 5], [12, 5], [10, 2]];
+    const foes = spots.map((p) => h.spawn('enemy_dummy', { pos: p }));
+    assert.ok(h.runUntil(() => u.skill.active, 2), `T${tier}: cast`);
+    approx(u.skill.timeLeft, 15, `T${tier}: 15 s`, 0.05);
+    assert.deepEqual(u.liveRangeGrid, sk.rangeGrid, `T${tier}: x-3 while on`);
+    approx(u.s.interval, 0.5, `T${tier}: 0.5 s`);
+    approx(u.s.atk, atk0 + u.base.atk * sk.bb.atk, `T${tier}: ATK +${sk.bb.atk * 100} %`);
+    const n0 = hitsBy(h, u).length;
+    h.run(6);
+    assert.ok(u.skill.active);
+    u.skill.end('test');
+    h.run(0.5); // the last lava lands
+    const hits = hitsBy(h, u).slice(n0).filter((c) => c.dmg.isAttack && c.dmg.isSkill);
+    const byAttack = new Map();
+    for (const c of hits) byAttack.set(c.dmg.attackId, [...(byAttack.get(c.dmg.attackId) ?? []), c.target]);
+    assert.ok(byAttack.size >= 11, `T${tier}: ${byAttack.size} attacks in 6 s (one per 0.5 s)`);
+    const counts = new Map(foes.map((e) => [e, 0]));
+    for (const [, ts] of byAttack) {
+      assert.equal(ts.length, n, `T${tier}: ${n} lava per attack`);
+      assert.equal(new Set(ts).size, n, `T${tier}: different enemies`);
+      for (const t of ts) counts.set(t, counts.get(t) + 1);
+    }
+    for (const [e, k] of counts) assert.ok(k > 0, `T${tier}: ${e.tileR},${e.tileC} drew lava (random draw)`);
+    for (const c of hits.slice(0, 4)) approx(c.amount, arts(atk0 + u.base.atk * sk.bb.atk, 50), `T${tier}: 100 % of her S3 ATK, arts`);
+    assert.deepEqual(u.liveRangeGrid, formOf(tier, elite).rangeGrid, `T${tier}: back to 3-1`);
+    approx(u.s.interval, 1.6, `T${tier}: interval back`);
+    done(h);
+  }
+  // two enemies of x-3 only: both every attack
+  const { h, u } = field({ tier: 6, elite: true, skill: 2, seed: 4 });
+  const two = [h.spawn('enemy_dummy', { pos: [10, 6] }), h.spawn('enemy_dummy', { pos: [10, 8] })];
+  u.skill.gainSp(999);
+  assert.ok(h.runUntil(() => u.skill.active, 2));
+  const n0 = hitsBy(h, u).length;
+  h.run(3);
+  const byAttack = new Map();
+  for (const c of hitsBy(h, u).slice(n0).filter((x) => x.dmg.isSkill)) byAttack.set(c.dmg.attackId, [...(byAttack.get(c.dmg.attackId) ?? []), c.target]);
+  [...byAttack.keys()].slice(0, -1).forEach((k) => assert.deepEqual(new Set(byAttack.get(k)), new Set(two), 'fewer enemies than lava: each of them'));
+  assert.ok(byAttack.size >= 5);
+  done(h);
+});
+
+test('T1 炎息: every 【术师】 operator of the field ATK +14 % while she is deployed (惊蛰 yes, 德克萨斯 no); CCR-X stage 3 "携带时" +22 %, kept while she is knocked out', () => {
+  const others = [{ uid: 2, chessId: 'chess_char_1_03_a', row: 12, col: 3 }, { uid: 3, chessId: 'chess_char_1_08_a', row: 12, col: 8 }];
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const { h, u } = field({ tier, elite, mod, skill: 0, others });
+    h.run(0.6);
+    const leizi = h.unit(2), texas = h.unit(3);
+    const carried = elite && tier === 6 && mod === CCRX;
+    const v = carried ? 0.22 : 0.14;
+    const t0 = u.def.raw.talents.find((t) => t.index === 0);
+    assert.equal(t0.bb.atk, v, `${label(f)}: the data`);
+    assert.match(t0.desc, carried ? /^携带时/ : /^在场时/, `${label(f)}: the text`);
+    assert.deepEqual(leizi.findBuff('talent:amgoat:casters')?.mods, { atkPct: v }, `${label(f)}: 惊蛰 (术师)`);
+    assert.deepEqual(u.findBuff('talent:amgoat:casters')?.mods, { atkPct: v }, `${label(f)}: herself`);
+    assert.equal(texas.findBuff('talent:amgoat:casters'), null, `${label(f)}: 德克萨斯 (先锋) gets nothing`);
+    h.b.kill(u, null);
+    h.run(1.2);
+    assert.equal(!!leizi.findBuff('talent:amgoat:casters'), carried, `${label(f)}: after she is knocked out`);
+    done(h);
+  }
+});
+
+test('T2 乱火: 7–15 SP at every deployment (a floored draw); CCR-Y stage 3 also ASPD +6–15, both the maxima (15 / 15) with an elite or leader in range at the deployment; stage 1 and no module: no ASPD, no maximum rule', () => {
+  const seen = new Set(), seenAs = new Set();
+  for (let seed = 1; seed <= 40; seed++) {
+    const gifts = [];
+    const setup = (b) => b.on('deploy', (c) => { if (c.unit.uid === 1) gifts.push([c.unit.skill.sp, c.unit.findBuff('talent:amgoat:wildfire')?.mods?.aspd ?? 0]); }, { priority: -100 });
+    const y3 = seed % 2 === 0;
+    const { h } = field({ tier: 6, elite: true, mod: y3 ? CCRY : null, skill: 2, seed, setup });
+    const sk = skillOf(6, true, S3);
+    const [sp, as] = gifts[0];
+    const k = sp - sk.initSp;
+    assert.ok(Number.isInteger(k) && k >= 7 && k <= 15, `seed ${seed}: +${k} SP`);
+    seen.add(k);
+    if (y3) { assert.ok(Number.isInteger(as) && as >= 6 && as <= 15, `seed ${seed}: ASPD +${as}`); seenAs.add(as); } else assert.equal(as, 0);
+    done(h);
+  }
+  assert.ok(seen.size >= 6 && seenAs.size >= 4, `a spread of draws: SP ${[...seen].sort((a, b) => a - b)}, ASPD ${[...seenAs].sort((a, b) => a - b)}`);
+  // an elite / leader in range at a deployment: the maxima with CCR-Y stage 3; a draw otherwise
+  for (const [tier, mod, rank] of [[6, CCRY, 'enemy_elite'], [6, CCRY, 'enemy_boss'], [5, CCRY, 'enemy_elite'], [6, null, 'enemy_elite'], [6, CCRY, 'enemy_dummy']]) {
+    const lab = `T${tier} ${mod ?? 'none'} ${rank}`;
+    const top = tier === 6 && mod === CCRY && rank !== 'enemy_dummy';
+    let maxed = 0;
+    for (let seed = 1; seed <= 6; seed++) {
+      const gifts = [];
+      const setup = (b) => b.on('deploy', (c) => { if (c.unit.uid === 1) gifts.push([c.unit.skill.sp, c.unit.findBuff('talent:amgoat:wildfire')?.mods?.aspd ?? 0]); }, { priority: -100 });
+      const { h, u } = field({ tier, elite: true, mod, skill: 2, seed, setup });
+      const sk = skillOf(tier, true, S3);
+      h.spawn(rank, { pos: [10, 6] });
+      h.b.retreat(u);
+      h.b.redeploy(u);
+      const [sp, as] = gifts[1];
+      if (top) assert.deepEqual([sp - sk.initSp, as], [15, 15], `${lab} seed ${seed}: the maxima`);
+      else {
+        assert.ok(sp - sk.initSp >= 7 && sp - sk.initSp <= 15, lab);
+        if (sp - sk.initSp === 15) maxed++;
+        if (mod !== CCRY || tier === 5) assert.equal(as, 0, `${lab}: no ASPD`);
+      }
+      done(h);
+    }
+    if (!top) assert.ok(maxed < 6, `${lab}: not always the maximum`);
+  }
+  // the talent's text and blackboard (stage 3 CCR-Y)
+  const t1 = formOf(6, true).modules.find((m) => m.uniEquipId === CCRY).talentChanges.find((t) => t.talentIndex === 1);
+  assert.deepEqual(t1.bb, { sp_min: 7, sp_max: 16, attack_speed_min: 6, attack_speed_max: 16, factor: 1 });
+  assert.match(t1.desc, /随机获得7~15点技力并随机提升6~15的攻击速度/);
+});
+
+test('modules: CCR-X "无视目标10点法术抗性" at stages 1 and 3 (her normal attack on RES 50 deals × 0.6); CCR-Y "普通攻击命中精英或领袖敌人时获得1点技力" — not on a normal enemy, not from S2\'s explosion', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const { h, u } = field({ tier, elite, mod, skill: 2 });
+    const x = elite && mod === CCRX, y = elite && mod === CCRY;
+    assert.equal(u.s.resIgnoreFlat, x ? 10 : 0, `${label(f)}: RES ignore`);
+    if (x) assert.equal(u.def.raw.trait.moduleDesc, '无视目标10点法术抗性');
+    if (y) assert.deepEqual(u.def.raw.trait.bb, { sp: 1 });
+    const foe = h.spawn('enemy_dummy', { pos: [10, 6] });
+    h.run(0.6);
+    const n0 = hitsBy(h, u).length;
+    h.run(4);
+    const hits = hitsBy(h, u).slice(n0).filter((c) => c.target === foe && c.dmg.isAttack);
+    assert.ok(hits.length >= 2, label(f));
+    approx(hits[0].amount, arts(u.s.atk, 50, x ? 10 : 0), `${label(f)}: arts on RES 50`);
+    const talentSp = () => h.hooksOf('spGain').filter((c) => c.unit === u && c.reason === 'trait').length;
+    assert.equal(talentSp(), 0, `${label(f)}: no SP from a normal enemy`);
+    h.b.kill(foe, null);
+    const el = h.spawn('enemy_elite', { pos: [10, 6] });
+    const k0 = talentSp(), a0 = hitsBy(h, u).filter((c) => c.target === el && c.dmg.isAttack).length;
+    h.run(4);
+    const hitsE = hitsBy(h, u).filter((c) => c.target === el && c.dmg.isAttack).length - a0;
+    assert.ok(hitsE >= 2, label(f));
+    const gained = talentSp() - k0;
+    assert.equal(gained, y ? hitsE : 0, `${label(f)}: +1 SP per hit on an elite`);
+    if (y) for (const c of h.hooksOf('spGain').filter((s) => s.unit === u && s.reason === 'trait')) assert.equal(c.amount, 1);
+    done(h);
+  }
+  // S2's explosion and second ½ are no further 命中 (CCR-Y stage 3): one SP per ignited attack on an elite
+  const { h, u } = field({ tier: 6, elite: true, mod: CCRY, skill: 1 });
+  h.run(0.6);
+  u.skill.charges = 0;
+  u.skill.sp = 0;
+  const el = h.spawn('enemy_elite', { pos: [10, 8] });
+  h.spawn('enemy_elite', { pos: [10, 9] });
+  u.skill.gainSp(999);
+  const k0 = h.hooksOf('spGain').filter((c) => c.unit === u && c.reason === 'trait').length;
+  assert.ok(h.runUntil(() => hitsBy(h, u).filter((c) => c.target === el && c.dmg.isSkill).length >= 2, 4));
+  h.step();
+  assert.equal(h.hooksOf('spGain').filter((c) => c.unit === u && c.reason === 'trait').length - k0, 1, 'one SP for the ignited attack');
+  done(h);
+});
diff --git a/test/content/op_cerber.test.js b/test/content/op_cerber.test.js
new file mode 100644
index 00000000..66f5845b
--- /dev/null
+++ b/test/content/op_cerber.test.js
@@ -0,0 +1,294 @@
+// test/content/op_cerber.test.js — the 自选 operator kit of 刻俄柏 (char_2013_cerber, 6★ 中坚术师; kit
+// server/sim/content/kits/ops/op-cerber.js), fielded the production way (a DIY slot + its `diy` pick, simdata getDiy) in
+// every form: tiers 5 / 6, normal (E2 Lv1, skill rank 4, no module) and elite (E2 Lv60, rank 7) with no module, CCR-X
+// “很干的面包” or CCR-Y “我打的刀” at stage 1 (tier 5) / 3 (tier 6). Every number is read back from data/backups.json (the
+// form of that slot status); the fidelity checklist of kits/README.md item by item.
+// Run: node --test test/content/op_cerber.test.js
+
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { makeBattle, enemyRec, checkInvariants } from '../helpers/battleHarness.js';
+import { KITTED_CHARS, OPERATOR_KITS, KITS } from '../../server/sim/content/kits/index.js';
+import { diyPool, validateDiyPicks } from '../../shared/diy.js';
+
+const load = (f) => JSON.parse(readFileSync(new URL(`../../data/${f}.json`, import.meta.url), 'utf8'));
+const CHESS = load('chess');
+const BACKUPS = load('backups');
+const ID = 'char_2013_cerber';
+const FORMS = BACKUPS.units[ID].forms;
+const SLOT = { 5: 'chess_char_5_diy1_a', 6: 'chess_char_6_diy1_a' };
+const CCRX = 'uniequip_002_cerber', CCRY = 'uniequip_003_cerber';
+const S1 = 'skchr_cerber_1', S2 = 'skchr_cerber_2', S3 = 'skchr_cerber_3';
+const formOf = (tier, elite) => FORMS[elite ? (tier === 5 ? '2/60/7/1' : '2/60/7/3') : '2/1/4/0'];
+const skillOf = (tier, elite, id) => formOf(tier, elite).skills.find((s) => s.skillId === id);
+const modOf = (tier, mod) => (mod ? formOf(tier, true).modules.find((m) => m.uniEquipId === mod) : null);
+const approx = (a, b, msg, eps = 1e-6) => assert.ok(Math.abs(a - b) <= eps * Math.max(1, Math.abs(b)), `${msg}: ${a} vs ${b}`);
+const dummy = (key, o = {}) => enemyRec({ key, hp: 1e9, speed: 0, mass: 0, ...o });
+const ENEMIES = {
+  enemy_dummy: dummy('enemy_dummy'), enemy_fly: dummy('enemy_fly', { motion: 'FLY' }),
+  enemy_d100: dummy('enemy_d100', { def: 100 }), enemy_d200: dummy('enemy_d200', { def: 200 }), enemy_d300: dummy('enemy_d300', { def: 300 }),
+  enemy_d400: dummy('enemy_d400', { def: 400 }), enemy_r50: dummy('enemy_r50', { res: 50 }),
+  enemy_elite: dummy('enemy_elite', { rank: 'ELITE' }), enemy_boss: dummy('enemy_boss', { rank: 'BOSS' }),
+};
+/** Every 自选 form: [tier, elite, module]. */
+const FORMS_ALL = [[5, false, null], [6, false, null], ...[5, 6].flatMap((t) => [null, CCRX, CCRY].map((m) => [t, true, m]))];
+const label = ([tier, elite, mod]) => `T${tier} ${elite ? 'elite' : 'normal'} ${mod ?? 'none'}`;
+const SHELL = 'cerber:shell';
+const shellOf = (c) => !!c.dmg?.tags?.includes(SHELL);
+
+/** A battle with 刻俄柏 as uid 1 at (row, col) facing RIGHT, plus `others`. */
+function field({ tier = 5, elite = false, mod = null, skill = 2, row = 10, col = 5, others = [], seed = 5, setup = null } = {}) {
+  const h = makeBattle({
+    defs: { enemies: ENEMIES }, timeLimit: 900, autoFinish: false, seed,
+    flags: { dpPerSec: 0, dpMax: 999 }, hooks: ['damaged', 'skillStart', 'skillEnd', 'statusApplied', 'spGain'], captureNoisy: true,
+    units: [{ uid: 1, diy: { slot: SLOT[tier], charId: ID, skillIndex: skill, uniEquipId: mod }, elite, row, col }, ...others],
+    setup,
+  });
+  h.step();
+  return { h, u: h.unit(1) };
+}
+const hitsBy = (h, u) => h.hooksOf('damaged').filter((c) => c.source === u);
+const atkHits = (h, u) => hitsBy(h, u).filter((c) => c.dmg?.isAttack);
+function done(h) {
+  checkInvariants(h.b);
+  assert.equal(h.b.errors.length, 0, JSON.stringify(h.b.errors[0]));
+}
+const arts = (amount, res, ignore = 0) => Math.max(amount * (1 - Math.max(0, res - ignore) / 100), amount * 0.05);
+
+test('刻俄柏 in every 自选 form: her operator kit (all three skills authored), the form\'s stats + module attributes, 3-1 range, ranged arts that hits air, block 1, 1.6 s, 空 bonds, no 特质', () => {
+  assert.equal(OPERATOR_KITS[ID], KITS[ID]);
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    for (const skill of [0, 1, 2]) {
+      const { h, u } = field({ tier, elite, mod, skill });
+      const form = formOf(tier, elite), m = elite ? modOf(tier, mod) : null;
+      assert.deepEqual([u.def.charId, u.def.diyFor, u.skill.id, !!u.kit.generic, u.kit.skillSource], [ID, SLOT[tier], form.skills[skill].skillId, false, 'skills'], label(f));
+      assert.deepEqual([u.base.maxHp, u.base.atk, u.base.def, u.base.res], [form.stats.maxHp + (m?.attr.maxHp ?? 0), form.stats.atk + (m?.attr.atk ?? 0), form.stats.def + (m?.attr.def ?? 0), 20], `${label(f)}: stats`);
+      assert.deepEqual([u.s.blockCnt, u.profile.attack, u.profile.dmgType, u.profile.canHitFly, u.profile.groundOnly, u.base.bat], [1, 'ranged', 'arts', true, false, 1.6], `${label(f)}: 中坚术师`);
+      assert.deepEqual(u.liveRangeGrid, form.rangeGrid, `${label(f)}: 3-1`);
+      assert.deepEqual([u.def.bonds, u.def.raw.garrisonIds, u.def.raw.tokens], [['emptyShip'], [], []], `${label(f)}: bonds / 特质 / no summon`);
+      assert.ok(!u.s.flags.liftoff && !u.s.flags.camou && !u.s.flags.stealth && !u.s.flags.untargetable, `${label(f)}: ground enemies target her`);
+      done(h);
+    }
+  }
+  // E2 Lv1 1220 / 553 / 114, E2 Lv60 1449 / 629 / 123; CCR-X +130 / +40 → +180 / +65, CCR-Y +80 / +40 / +17 → +120 / +56 / +23
+  assert.deepEqual([FORMS['2/1/4/0'].stats.maxHp, FORMS['2/1/4/0'].stats.atk, FORMS['2/60/7/1'].stats.maxHp, FORMS['2/60/7/1'].stats.atk], [1220, 553, 1449, 629]);
+  assert.deepEqual([modOf(5, CCRX).attr, modOf(6, CCRX).attr, modOf(5, CCRY).attr, modOf(6, CCRY).attr], [{ maxHp: 130, atk: 40 }, { maxHp: 180, atk: 65 }, { maxHp: 80, atk: 40, def: 17 }, { maxHp: 120, atk: 56, def: 23 }]);
+});
+
+test('a 自选 pick: 刻俄柏 is offered at tiers 5 and 6 and a roster with her passes validateDiyPicks', () => {
+  const data = { chess: CHESS, backups: BACKUPS };
+  assert.ok(KITTED_CHARS.includes(ID));
+  for (const t of [5, 6]) assert.ok(diyPool(t, { data, kitted: KITTED_CHARS }).includes(ID), `tier ${t}`);
+  assert.deepEqual(validateDiyPicks({ [SLOT[5]]: { charId: ID, skillIndex: 0, uniEquipId: CCRX } }, { data, kitted: KITTED_CHARS }),
+    { ok: true, picks: { [SLOT[5]]: { charId: ID, skillIndex: 0, uniEquipId: CCRX } } });
+});
+
+test('S1 “很冰的斧” (AUTO, 1 / 2 charges, data DEFAULT): the next attack at 165 % / 180 % ATK arts on an unblocked enemy rather than a blocked one, binding it 2 / 2.5 s', () => {
+  for (const [tier, elite] of [[5, false], [6, true]]) {
+    const sk = skillOf(tier, elite, S1);
+    // 角峰 blocks the dummy spawned on its tile; the other dummy is free (both in her range; the blocked one is nearer its goal)
+    const { h, u } = field({ tier, elite, skill: 0, others: [{ uid: 2, chessId: 'chess_char_1_02_a', row: 10, col: 7 }] });
+    assert.deepEqual([u.skill.rule, u.skill.kind, u.skill.maxCharges, sk.spCost, sk.bb.atk_scale, sk.bb.duration], ['DEFAULT', elite ? 'charges' : 'instant', elite ? 2 : 1, 7, elite ? 1.8 : 1.65, elite ? 2.5 : 2], `T${tier}`);
+    u.skill.charges = 0;
+    u.skill.sp = 0;
+    const blocked = h.spawn('enemy_dummy', { pos: [10, 7] });
+    const free = h.spawn('enemy_dummy', { pos: [11, 7] });
+    h.run(0.2);
+    assert.equal(blocked.blockedBy, h.unit(2), `T${tier}: 角峰 blocks it`);
+    const n0 = atkHits(h, u).length;
+    h.run(1.7);
+    const plain = atkHits(h, u).slice(n0);
+    assert.ok(plain.length >= 1 && plain.every((c) => c.target === blocked && !c.dmg.isSkill), `T${tier}: her plain attacks go to the blocked one`);
+    u.skill.gainSp(999);
+    const n1 = atkHits(h, u).length;
+    assert.ok(h.runUntil(() => atkHits(h, u).slice(n1).some((c) => c.dmg.isSkill), 3), `T${tier}: cast`);
+    const sh = atkHits(h, u).slice(n1).find((c) => c.dmg.isSkill);
+    assert.equal(sh.target, free, `T${tier}: "优先攻击没有被阻挡的目标"`);
+    approx(sh.amount, u.s.atk * sk.bb.atk_scale, `T${tier}: ${sk.bb.atk_scale * 100} % ATK`);
+    assert.equal(sh.type, 'arts');
+    const bind = h.hooksOf('statusApplied').find((c) => c.source === u && c.status === 'bind');
+    assert.ok(bind && bind.target === free, `T${tier}: bound`);
+    approx(bind.duration, sk.bb.duration, `T${tier}: 束缚 ${sk.bb.duration} s`);
+    done(h);
+  }
+});
+
+test('S2 “很热的刀” (MANUAL, data DEFAULT): 33 / 36 s, attack interval × 0.6 / × 0.4 (PRTS "(*0.4)"), the highest-DEF enemy first; all back after', () => {
+  for (const [tier, elite] of [[5, false], [6, true]]) {
+    const sk = skillOf(tier, elite, S2);
+    const { h, u } = field({ tier, elite, skill: 1 });
+    assert.deepEqual([u.skill.rule, sk.duration, sk.bb.base_attack_time, sk.spCost, sk.initSp], ['DEFAULT', elite ? 36 : 33, elite ? 0.4 : 0.6, elite ? 44 : 47, elite ? 16 : 13], `T${tier}`);
+    h.run(0.6);
+    const iv0 = u.s.interval;
+    const d1 = h.spawn('enemy_d100', { pos: [10, 6] }), d3 = h.spawn('enemy_d300', { pos: [11, 7] }), d2 = h.spawn('enemy_d200', { pos: [9, 6] });
+    void d1; void d2;
+    u.skill.gainSp(999);
+    assert.ok(h.runUntil(() => u.skill.active, 3), `T${tier}: cast`);
+    approx(u.skill.timeLeft, sk.duration, `T${tier}: ${sk.duration} s`, 0.05);
+    approx(u.s.interval, iv0 * sk.bb.base_attack_time, `T${tier}: interval × ${sk.bb.base_attack_time}`);
+    const n0 = atkHits(h, u).length;
+    h.run(5);
+    const hits = atkHits(h, u).slice(n0);
+    assert.ok(hits.length >= Math.floor(5 / u.s.interval) - 1, `T${tier}: ${hits.length} attacks`);
+    assert.ok(hits.every((c) => c.target === d3), `T${tier}: the DEF 300 enemy`);
+    assert.ok(h.runUntil(() => !u.skill.active, sk.duration));
+    approx(u.s.interval, iv0, `T${tier}: interval back`);
+    done(h);
+  }
+});
+
+test('S3 “很重的枪” (MANUAL, data ACTIVE_RANGE on 3-3): 56 / 57 s, range 3-3 while on, ATK +130 % / +160 %, physical, the lowest-DEF enemy first, each hit silences 2.5 / 3 s; arts and 3-1 again after', () => {
+  for (const [tier, elite] of [[5, false], [6, true]]) {
+    const sk = skillOf(tier, elite, S3);
+    const { h, u } = field({ tier, elite, skill: 2, seed: 7 });
+    assert.deepEqual([u.skill.rule, sk.trigger.rawRule, sk.rangeId, sk.duration, sk.bb.atk, sk.bb['attack@silence'], sk.initSp], ['ACTIVE_RANGE', 'DEFAULT', '3-3', elite ? 57 : 56, elite ? 1.6 : 1.3, elite ? 3 : 2.5, elite ? 47 : 41], `T${tier}`);
+    assert.deepEqual(u.skill.triggerGrid, sk.rangeGrid, `T${tier}: the trigger grid is 3-3`);
+    h.run(0.6);
+    const atk0 = u.s.atk;
+    u.skill.gainSp(999);
+    // (9,8) / (11,8) are on 3-3, not on her 3-1: the cast comes with an enemy there
+    const hi = h.spawn('enemy_d300', { pos: [9, 8] });
+    const lo = h.spawn('enemy_d100', { pos: [11, 8] });
+    assert.ok(h.runUntil(() => u.skill.active, 2), `T${tier}: cast with enemies on 3-3 only`);
+    assert.deepEqual(u.liveRangeGrid, sk.rangeGrid, `T${tier}: 3-3 while on`);
+    approx(u.s.atk, atk0 + u.base.atk * sk.bb.atk, `T${tier}: ATK`);
+    const n0 = atkHits(h, u).length;
+    h.run(5);
+    const hits = atkHits(h, u).slice(n0);
+    assert.ok(hits.length >= 2 && hits.every((c) => c.target === lo && c.type === 'phys'), `T${tier}: physical, on the lowest DEF`);
+    approx(hits[0].amount, Math.max(u.s.atk - 100, u.s.atk * 0.05), `T${tier}: physical on DEF 100`);
+    const sil = h.hooksOf('statusApplied').filter((c) => c.source === u && c.status === 'silence');
+    assert.ok(sil.length >= hits.length && sil.every((c) => c.target === lo), `T${tier}: silenced on every hit`);
+    approx(sil[0].duration, sk.bb['attack@silence'], `T${tier}: ${sk.bb['attack@silence']} s`);
+    // 剥壳 stays arts: DEF 100 × 40 %
+    const shells = hitsBy(h, u).slice(n0).filter(shellOf);
+    assert.ok(shells.length >= hits.length - 1 && shells.every((c) => c.type === 'arts'), `T${tier}: 剥壳 arts`);
+    u.skill.end('test');
+    h.run(0.1);
+    assert.deepEqual(u.liveRangeGrid, formOf(tier, elite).rangeGrid, `T${tier}: back to 3-1`);
+    void hi;
+    done(h);
+  }
+});
+
+test('T1 剥壳: each hit of her attacks adds DEF × 40 % arts (none on DEF 0); CCR-X stage 3: 50 % +5 % per hit on the same target up to 75 %, back to 50 % on another; stage 1 keeps 40 %', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const { h, u } = field({ tier, elite, mod, skill: 1 });
+    const x3 = elite && tier === 6 && mod === CCRX;
+    const t0 = u.def.raw.talents.find((t) => t.index === 0);
+    assert.equal(t0.bb.atk_scale, x3 ? 0.5 : 0.4, `${label(f)}: the data`);
+    u.skill.charges = 0;
+    const a = h.spawn('enemy_d400', { pos: [10, 6] });
+    const n0 = hitsBy(h, u).length;
+    h.run(1.6 * 8 + 0.4);
+    const shells = hitsBy(h, u).slice(n0).filter((c) => shellOf(c) && c.target === a);
+    const plain = hitsBy(h, u).slice(n0).filter((c) => c.dmg.isAttack && c.target === a);
+    assert.ok(plain.length >= 7 && shells.length === plain.length, `${label(f)}: one 剥壳 per hit (${shells.length} / ${plain.length})`);
+    const want = x3 ? [0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.75] : Array(7).fill(0.4);
+    shells.slice(0, 7).forEach((c, i) => {
+      approx(c.amount, 400 * want[i], `${label(f)}: hit ${i + 1}`);
+      assert.deepEqual([c.type, !!c.dmg.isAttack], ['arts', false], `${label(f)}: a talent arts instance`);
+    });
+    // another target: back to the base ratio; a DEF-0 target takes no 剥壳
+    h.b.kill(a, null);
+    const b = h.spawn('enemy_d200', { pos: [10, 6] });
+    const n1 = hitsBy(h, u).length;
+    h.run(1.7);
+    const sb = hitsBy(h, u).slice(n1).filter((c) => shellOf(c) && c.target === b);
+    assert.ok(sb.length >= 1);
+    approx(sb[0].amount, 200 * (x3 ? 0.5 : 0.4), `${label(f)}: a new target — the base ratio`);
+    h.b.kill(b, null);
+    const z = h.spawn('enemy_dummy', { pos: [10, 6] });
+    const n2 = hitsBy(h, u).length;
+    h.run(1.7);
+    assert.ok(hitsBy(h, u).slice(n2).some((c) => c.target === z && c.dmg.isAttack), label(f));
+    assert.ok(!hitsBy(h, u).slice(n2).some((c) => c.target === z && shellOf(c)), `${label(f)}: no 剥壳 on DEF 0`);
+    done(h);
+  }
+});
+
+test('T2 独行长路: ATK +8 % / ASPD +8 while nobody else is on her x-5 (a device too), off with a neighbour; an enemy-like ally does not switch it off but, seen while it is off, keeps it off until it leaves; CCR-Y stage 3: +15 % / +15 decided once per deployment', () => {
+  const lone = (u) => u.findBuff('talent:cerber:lone');
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const y3 = elite && tier === 6 && mod === CCRY;
+    const { h, u } = field({ tier, elite, mod, skill: 1 });
+    h.step();
+    const v = y3 ? { atkPct: 0.15, aspd: 15 } : { atkPct: 0.08, aspd: 8 };
+    assert.deepEqual(lone(u)?.mods, v, `${label(f)}: alone`);
+    const dev = h.b.spawnDevice('trap_1105_accrate', 10, 6, { name: 'test crate' });
+    assert.ok(dev && dev.side === 'ally', label(f));
+    h.step();
+    assert.equal(!!lone(u), y3, `${label(f)}: a crate in front of her ${y3 ? '(the deployment decided)' : ''}`);
+    h.b.kill(dev, null);
+    h.step();
+    assert.deepEqual(lone(u)?.mods, v, `${label(f)}: alone again`);
+    if (!y3) {
+      // an enemy-like ally (炎佑's kind: an ally built from an enemy record): stays on while on …
+      const like = h.b.spawnDevice('trap_1105_accrate', 9, 5, { name: 'enemy-like' });
+      like.defId = 'enemy_9012_acloon';
+      h.step();
+      assert.ok(lone(u), `${label(f)}: an enemy-like ally does not switch it off`);
+      // … but seen while off (an ordinary neighbour came first) it keeps it off until it leaves the field
+      const mate = h.b.spawnDevice('trap_1105_accrate', 11, 5, { name: 'mate' });
+      h.step();
+      assert.equal(lone(u), null, `${label(f)}: off with an ordinary neighbour`);
+      h.b.kill(mate, null);
+      h.step();
+      assert.equal(lone(u), null, `${label(f)}: the enemy-like ally seen while off keeps it off`);
+      h.b.relocate(like, 12, 9);
+      h.step();
+      assert.equal(lone(u), null, `${label(f)}: even away from her`);
+      h.b.kill(like, null);
+      h.step();
+      assert.ok(lone(u), `${label(f)}: on once it left the field`);
+    }
+    done(h);
+  }
+  // CCR-Y stage 3 with a neighbour at the deployment: none for that deployment, then a lone redeploy gets it
+  const { h, u } = field({ tier: 6, elite: true, mod: CCRY, skill: 1, others: [{ uid: 2, chessId: 'chess_char_1_08_a', row: 11, col: 5 }] });
+  h.run(0.5);
+  assert.equal(lone(u), null, 'a neighbour at the battle-start deployment');
+  h.b.retreat(h.unit(2));
+  h.run(0.5);
+  assert.equal(lone(u), null, 'still none: decided at the deployment');
+  h.b.retreat(u);
+  h.b.redeploy(u);
+  h.step();
+  assert.deepEqual(lone(u)?.mods, { atkPct: 0.15, aspd: 15 }, 'a lone redeploy');
+  done(h);
+  const t1 = formOf(6, true).modules.find((m) => m.uniEquipId === CCRY).talentChanges.find((t) => t.talentIndex === 1);
+  assert.match(t1.desc, /^部署时若周围四格内没有其他友方单位/);
+});
+
+test('modules: CCR-X "无视目标10点法术抗性" at stages 1 and 3 (× 0.6 on RES 50); CCR-Y "普通攻击命中精英或领袖敌人时获得1点技力" — not on a normal enemy, not from 剥壳', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const { h, u } = field({ tier, elite, mod, skill: 2 });
+    const x = elite && mod === CCRX, y = elite && mod === CCRY;
+    assert.equal(u.s.resIgnoreFlat, x ? 10 : 0, `${label(f)}: RES ignore`);
+    if (y) assert.deepEqual(u.def.raw.trait.bb, { sp: 1 });
+    const foe = h.spawn('enemy_r50', { pos: [10, 6] });
+    const n0 = hitsBy(h, u).length;
+    h.run(3.5);
+    const hits = hitsBy(h, u).slice(n0).filter((c) => c.target === foe && c.dmg.isAttack);
+    assert.ok(hits.length >= 2, label(f));
+    approx(hits[0].amount, arts(u.s.atk, 50, x ? 10 : 0), `${label(f)}: arts on RES 50`);
+    const traitSp = () => h.hooksOf('spGain').filter((c) => c.unit === u && c.reason === 'trait').length;
+    assert.equal(traitSp(), 0, `${label(f)}: no SP from a normal enemy`);
+    h.b.kill(foe, null);
+    for (const key of ['enemy_elite', 'enemy_boss']) {
+      const el = h.spawn(key, { pos: [10, 6] });
+      const k0 = traitSp(), a0 = atkHits(h, u).filter((c) => c.target === el).length;
+      h.run(3.5);
+      const hitsE = atkHits(h, u).filter((c) => c.target === el).length - a0;
+      assert.ok(hitsE >= 2, label(f));
+      assert.equal(traitSp() - k0, y ? hitsE : 0, `${label(f)}: +1 SP per hit on an ${key}`);
+      h.b.kill(el, null);
+    }
+    done(h);
+  }
+});
diff --git a/test/content/op_heyak.test.js b/test/content/op_heyak.test.js
new file mode 100644
index 00000000..17bd0ded
--- /dev/null
+++ b/test/content/op_heyak.test.js
@@ -0,0 +1,362 @@
+// test/content/op_heyak.test.js — the 自选 operator kit of 霍尔海雅 (char_4027_heyak, 6★ 中坚术师; kit
+// server/sim/content/kits/ops/op-heyak.js), fielded the production way (a DIY slot + its `diy` pick, simdata getDiy) in
+// every form: tiers 5 / 6, normal (E2 Lv1, skill rank 4, no module) and elite (E2 Lv60, rank 7) with no module, CCR-X
+// “图书馆”, CCR-Y “羽蛇的时间博物馆” or ISW-A “霍尔海雅特限证章” at stage 1 (tier 5) / 3 (tier 6). Every number is read back from
+// data/backups.json (the form of that slot status); the fidelity checklist of kits/README.md item by item.
+// Run: node --test test/content/op_heyak.test.js
+
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { makeBattle, enemyRec, checkInvariants } from '../helpers/battleHarness.js';
+import { KITTED_CHARS, OPERATOR_KITS, KITS } from '../../server/sim/content/kits/index.js';
+import { diyPool, validateDiyPicks } from '../../shared/diy.js';
+
+const load = (f) => JSON.parse(readFileSync(new URL(`../../data/${f}.json`, import.meta.url), 'utf8'));
+const CHESS = load('chess');
+const BACKUPS = load('backups');
+const ID = 'char_4027_heyak';
+const FORMS = BACKUPS.units[ID].forms;
+const SLOT = { 5: 'chess_char_5_diy1_a', 6: 'chess_char_6_diy1_a' };
+const CCRX = 'uniequip_002_heyak', CCRY = 'uniequip_003_heyak', ISWA = 'uniequip_004_heyak';
+const S1 = 'skchr_heyak_1', S2 = 'skchr_heyak_2', S3 = 'skchr_heyak_3';
+const formOf = (tier, elite) => FORMS[elite ? (tier === 5 ? '2/60/7/1' : '2/60/7/3') : '2/1/4/0'];
+const skillOf = (tier, elite, id) => formOf(tier, elite).skills.find((s) => s.skillId === id);
+const modOf = (tier, mod) => (mod ? formOf(tier, true).modules.find((m) => m.uniEquipId === mod) : null);
+const approx = (a, b, msg, eps = 1e-6) => assert.ok(Math.abs(a - b) <= eps * Math.max(1, Math.abs(b)), `${msg}: ${a} vs ${b}`);
+const dummy = (key, o = {}) => enemyRec({ key, hp: 1e9, speed: 0, mass: 0, ...o });
+const ENEMIES = {
+  enemy_dummy: dummy('enemy_dummy'), enemy_fly: dummy('enemy_fly', { motion: 'FLY' }), enemy_heavy: dummy('enemy_heavy', { mass: 2 }),
+  enemy_r50: dummy('enemy_r50', { res: 50 }), enemy_elite: dummy('enemy_elite', { rank: 'ELITE' }), enemy_boss: dummy('enemy_boss', { rank: 'BOSS' }),
+};
+/** Every 自选 form: [tier, elite, module]. */
+const FORMS_ALL = [[5, false, null], [6, false, null], ...[5, 6].flatMap((t) => [null, CCRX, CCRY, ISWA].map((m) => [t, true, m]))];
+const label = ([tier, elite, mod]) => `T${tier} ${elite ? 'elite' : 'normal'} ${mod ?? 'none'}`;
+
+/** A battle with 霍尔海雅 as uid 1 at (row, col) facing RIGHT, plus `others`. */
+function field({ tier = 5, elite = false, mod = null, skill = 2, row = 10, col = 5, others = [], seed = 5, setup = null } = {}) {
+  const h = makeBattle({
+    defs: { enemies: ENEMIES }, timeLimit: 900, autoFinish: false, seed,
+    flags: { dpPerSec: 0, dpMax: 999 }, hooks: ['damaged', 'skillStart', 'skillEnd', 'statusApplied', 'spGain'], captureNoisy: true,
+    units: [{ uid: 1, diy: { slot: SLOT[tier], charId: ID, skillIndex: skill, uniEquipId: mod }, elite, row, col }, ...others],
+    setup,
+  });
+  h.step();
+  return { h, u: h.unit(1) };
+}
+const hitsBy = (h, u) => h.hooksOf('damaged').filter((c) => c.source === u);
+const statusBy = (h, u, key) => h.hooksOf('statusApplied').filter((c) => c.source === u && c.status === key);
+function done(h) {
+  checkInvariants(h.b);
+  assert.equal(h.b.errors.length, 0, JSON.stringify(h.b.errors[0]));
+}
+const arts = (amount, res, ignore = 0) => Math.max(amount * (1 - Math.max(0, res - ignore) / 100), amount * 0.05);
+/** 传承终焉's numbers in a form: [atk_scale, silence]. */
+const t0Of = (tier, elite, mod) => {
+  const t = (mod ? modOf(tier, mod).talentChanges.find((c) => c.talentIndex === 0) : null) ?? formOf(tier, elite).talents.find((c) => c.index === 0);
+  return [t.bb.atk_scale, t.bb.silence];
+};
+
+test('霍尔海雅 in every 自选 form: her operator kit (all three skills authored), the form\'s stats + module attributes, 3-1 range, ranged arts that hits air, block 1, 1.6 s, 空 bonds, no 特质', () => {
+  assert.equal(OPERATOR_KITS[ID], KITS[ID]);
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    for (const skill of [0, 1, 2]) {
+      const { h, u } = field({ tier, elite, mod, skill });
+      const form = formOf(tier, elite), m = elite ? modOf(tier, mod) : null;
+      assert.deepEqual([u.def.charId, u.def.diyFor, u.skill.id, !!u.kit.generic, u.kit.skillSource], [ID, SLOT[tier], form.skills[skill].skillId, false, 'skills'], label(f));
+      assert.deepEqual([u.base.maxHp, u.base.atk, u.base.def, u.base.res], [form.stats.maxHp + (m?.attr.maxHp ?? 0), form.stats.atk + (m?.attr.atk ?? 0), form.stats.def + (m?.attr.def ?? 0), 20], `${label(f)}: stats`);
+      assert.deepEqual([u.s.blockCnt, u.profile.attack, u.profile.dmgType, u.profile.canHitFly, u.profile.groundOnly, u.base.bat], [1, 'ranged', 'arts', true, false, 1.6], `${label(f)}: 中坚术师`);
+      assert.deepEqual(u.liveRangeGrid, form.rangeGrid, `${label(f)}: 3-1`);
+      assert.deepEqual([u.def.bonds, u.def.raw.garrisonIds, u.def.raw.tokens], [['emptyShip'], [], []], `${label(f)}: bonds / 特质 / no summon`);
+      assert.ok(!u.s.flags.liftoff && !u.s.flags.camou && !u.s.flags.stealth && !u.s.flags.untargetable, `${label(f)}: ground enemies target her`);
+      done(h);
+    }
+  }
+  // E2 Lv1 1380 / 525 / 116, E2 Lv60 1639 / 597 / 125; CCR-X +120 / +40 → +175 / +65, CCR-Y +105 / +32 / +15 → +140 / +45 /
+  // +25, ISW-A +100 / +55 → +130 / +80
+  assert.deepEqual([FORMS['2/1/4/0'].stats.maxHp, FORMS['2/1/4/0'].stats.atk, FORMS['2/60/7/1'].stats.maxHp, FORMS['2/60/7/1'].stats.atk], [1380, 525, 1639, 597]);
+  assert.deepEqual([modOf(5, CCRX).attr, modOf(6, CCRX).attr, modOf(5, CCRY).attr, modOf(6, CCRY).attr, modOf(5, ISWA).attr, modOf(6, ISWA).attr],
+    [{ maxHp: 120, atk: 40 }, { maxHp: 175, atk: 65 }, { maxHp: 105, atk: 32, def: 15 }, { maxHp: 140, atk: 45, def: 25 }, { maxHp: 100, atk: 55 }, { maxHp: 130, atk: 80 }]);
+});
+
+test('a 自选 pick: 霍尔海雅 is offered at tiers 5 and 6 and a roster with her (ISW-A included) passes validateDiyPicks', () => {
+  const data = { chess: CHESS, backups: BACKUPS };
+  assert.ok(KITTED_CHARS.includes(ID));
+  for (const t of [5, 6]) assert.ok(diyPool(t, { data, kitted: KITTED_CHARS }).includes(ID), `tier ${t}`);
+  assert.deepEqual(validateDiyPicks({ [SLOT[6]]: { charId: ID, skillIndex: 2, uniEquipId: ISWA } }, { data, kitted: KITTED_CHARS }),
+    { ok: true, picks: { [SLOT[6]]: { charId: ID, skillIndex: 2, uniEquipId: ISWA } } });
+});
+
+test('S1 但为求索 (AUTO, 1 / 2 charges, data DEFAULT): the next attack hits two enemies at 200 % / 240 % ATK arts; with one enemy only it lifts it 2.5 / 3 s — before 传承终焉, so that hit is × 1.2 and silences', () => {
+  for (const [tier, elite] of [[5, false], [6, true]]) {
+    const sk = skillOf(tier, elite, S1);
+    const [ts, sil] = t0Of(tier, elite, null);
+    assert.deepEqual([sk.skillType, sk.spCost, sk.maxChargeTime, sk.bb.atk_scale, sk.bb.levitate, ts, sil], ['AUTO', 8, elite ? 2 : 1, elite ? 2.4 : 2, elite ? 3 : 2.5, 1.2, 3], `T${tier}`);
+    // two enemies: two shots, no lift
+    {
+      const { h, u } = field({ tier, elite, skill: 0 });
+      assert.deepEqual([u.skill.rule, u.skill.kind, u.skill.maxCharges], ['DEFAULT', elite ? 'charges' : 'instant', elite ? 2 : 1], `T${tier}`);
+      u.skill.charges = 0;
+      u.skill.sp = 0;
+      const a = h.spawn('enemy_dummy', { pos: [10, 6] }), b = h.spawn('enemy_dummy', { pos: [11, 7] });
+      u.skill.gainSp(999);
+      const n0 = hitsBy(h, u).length;
+      assert.ok(h.runUntil(() => hitsBy(h, u).slice(n0).filter((c) => c.dmg.isSkill).length >= 2, 3), `T${tier}: cast`);
+      const sh = hitsBy(h, u).slice(n0).filter((c) => c.dmg.isSkill);
+      assert.deepEqual(new Set(sh.slice(0, 2).map((c) => c.target)), new Set([a, b]), `T${tier}: one more target`);
+      for (const c of sh.slice(0, 2)) approx(c.amount, u.s.atk * sk.bb.atk_scale, `T${tier}: ${sk.bb.atk_scale * 100} % ATK`);
+      assert.equal(statusBy(h, u, 'levitate').length, 0, `T${tier}: two shots — no lift`);
+      done(h);
+    }
+    // one enemy: lifted, and that hit already counts as one on an air unit
+    {
+      const { h, u } = field({ tier, elite, skill: 0 });
+      u.skill.charges = 0;
+      u.skill.sp = 0;
+      const a = h.spawn('enemy_dummy', { pos: [10, 6] });
+      u.skill.gainSp(999);
+      const n0 = hitsBy(h, u).length;
+      assert.ok(h.runUntil(() => hitsBy(h, u).slice(n0).some((c) => c.dmg.isSkill), 3), `T${tier}: cast`);
+      const sh = hitsBy(h, u).slice(n0).find((c) => c.dmg.isSkill);
+      assert.equal(sh.target, a);
+      approx(sh.amount, u.s.atk * sk.bb.atk_scale * ts, `T${tier}: × ${ts} (lifted first)`);
+      const lev = statusBy(h, u, 'levitate');
+      assert.equal(lev.length, 1, `T${tier}: lifted`);
+      approx(lev[0].duration, sk.bb.levitate, `T${tier}: 浮空 ${sk.bb.levitate} s`);
+      const sl = statusBy(h, u, 'silence');
+      assert.ok(sl.length >= 1 && sl[0].target === a, `T${tier}: silenced`);
+      approx(sl[0].duration, sil, `T${tier}: ${sil} s`);
+      done(h);
+    }
+  }
+});
+
+test('S2 群星逶迤 (MANUAL, data DEFAULT): 16 s, each attack 9 shots of 27 % / 35 % ATK at random enemies of her range, each rolling 10 % / 12 % to lift 1 s; a lifted or flying target takes × 1.2', () => {
+  for (const [tier, elite] of [[5, false], [6, true]]) {
+    const sk = skillOf(tier, elite, S2);
+    const sc = sk.bb['attack@atk_scale'], p = sk.bb['attack@prob'];
+    assert.deepEqual([sk.duration, sc, p, sk.bb['attack@levitate'], sk.spCost, sk.initSp], [16, elite ? 0.35 : 0.27, elite ? 0.12 : 0.1, 1, elite ? 32 : 36, elite ? 22 : 21], `T${tier}`);
+    assert.match(sk.desc, /9连发/);
+    const flying = [];
+    const setup = (b) => b.on('damaged', (c) => { if (c.source?.uid === 1) flying.push(c.target.isFlying); }, { priority: -100 });
+    const { h, u } = field({ tier, elite, skill: 1, seed: 21, setup });
+    assert.equal(u.skill.rule, 'DEFAULT');
+    let rolls = 0;
+    const chance = h.b.rng.chance;
+    h.b.rng.chance = (q) => { if (q === p) rolls++; return chance(q); };
+    const foes = [[10, 6], [9, 6], [11, 6], [10, 7], [9, 7], [11, 7]].map((pos) => h.spawn('enemy_dummy', { pos }));
+    const fly = h.spawn('enemy_fly', { pos: [10, 8] });
+    u.skill.gainSp(999);
+    assert.ok(h.runUntil(() => u.skill.active, 3), `T${tier}: cast`);
+    approx(u.skill.timeLeft, 16, `T${tier}: 16 s`, 0.05);
+    const n0 = hitsBy(h, u).length, f0 = flying.length;
+    assert.ok(h.runUntil(() => !u.skill.active, 17));
+    h.run(0.6);
+    const shots = hitsBy(h, u).slice(n0).filter((c) => c.dmg.isSkill);
+    const fl = flying.slice(f0, f0 + hitsBy(h, u).slice(n0).length);
+    const byAttack = new Map();
+    for (const c of shots) byAttack.set(c.dmg.attackId, [...(byAttack.get(c.dmg.attackId) ?? []), c.target]);
+    assert.ok(byAttack.size >= 9, `T${tier}: ${byAttack.size} attacks`);
+    for (const [, ts] of byAttack) assert.equal(ts.length, 9, `T${tier}: 9 shots per attack`);
+    for (const e of [...foes, fly]) assert.ok(shots.some((c) => c.target === e), `T${tier}: ${e.tileR},${e.tileC} drew shots (random)`);
+    assert.equal(rolls, shots.length, `T${tier}: one ${p * 100} % roll per shot`);
+    const lifts = statusBy(h, u, 'levitate');
+    assert.ok(lifts.length > 0.5 * p * shots.length && lifts.length <= 1.3 * p * shots.length, `T${tier}: ${lifts.length} lifts of ${shots.length} shots`);
+    assert.ok(lifts.every((c) => c.target !== fly && Math.abs(c.duration - 1) < 1e-9), `T${tier}: 1 s, never on a data flyer`);
+    const all = hitsBy(h, u).slice(n0);
+    all.forEach((c, i) => {
+      if (!c.dmg.isSkill) return;
+      approx(c.amount, u.s.atk * sc * (fl[i] ? 1.2 : 1), `T${tier}: shot ${i} (${fl[i] ? 'air' : 'ground'})`);
+    });
+    assert.ok(fl.filter(Boolean).length > shots.filter((c) => c.target === fly).length, `T${tier}: lifted ground enemies took × 1.2 too`);
+    done(h);
+  }
+});
+
+test('S3 博览者的狂语 (MANUAL, data ACTIVE_RANGE on 3-10): 45 s, interval 1.6 + 1.4 = 3.0 s, range 3-10 while on; each attack three whirlwinds (her row and the rows beside), 1 tile/s, each lifting the first enemy it touches then dealing 2.33→3.5 / 2.53→3.8 × ATK over 1.77 s (× 1.2: lifted)', () => {
+  for (const [tier, elite] of [[5, false], [6, true]]) {
+    const sk = skillOf(tier, elite, S3);
+    const lo = sk.bb['attack@min_atk_scale'], hi = sk.bb['attack@max_atk_scale'], lev = sk.bb['attack@levitate'];
+    assert.deepEqual([sk.rangeId, sk.duration, sk.bb.base_attack_time, lo, hi, lev, sk.spCost, sk.initSp], ['3-10', 45, 1.4, elite ? 2.53 : 2.33, elite ? 3.8 : 3.5, elite ? 2 : 1.8, elite ? 64 : 67, elite ? 42 : 41], `T${tier}`);
+    const { h, u } = field({ tier, elite, skill: 2 });
+    assert.deepEqual([u.skill.rule, u.skill.triggerGrid], ['ACTIVE_RANGE', sk.rangeGrid], `T${tier}: the trigger`);
+    h.run(0.6);
+    u.skill.gainSp(999);
+    // (10,9) is on 3-10 only: the cast comes with it; lanes: row 9 → (9,6) 1 tile ahead, row 10 → (10,8) before (10,9), row 11 → (11,9)
+    const far = h.spawn('enemy_dummy', { pos: [10, 9] });
+    assert.ok(h.runUntil(() => u.skill.active, 2), `T${tier}: cast with an enemy on 3-10 only`);
+    const near = h.spawn('enemy_dummy', { pos: [9, 6] }), mid = h.spawn('enemy_dummy', { pos: [10, 8] }), low = h.spawn('enemy_dummy', { pos: [11, 9] });
+    assert.deepEqual(u.liveRangeGrid, sk.rangeGrid, `T${tier}: 3-10 while on`);
+    approx(u.s.interval, 3, `T${tier}: 3.0 s`);
+    const n0 = hitsBy(h, u).length;
+    h.run(6.5);
+    const hits = hitsBy(h, u).slice(n0);
+    const first = (e) => hits.find((c) => c.target === e);
+    const scale = (age) => lo + (hi - lo) * Math.min(1, age / 1.77);
+    approx(first(near).amount, u.s.atk * scale(0.5) * 1.2, `T${tier}: 0.5 tile flown`, 1e-3);
+    approx(first(mid).amount, u.s.atk * hi * 1.2, `T${tier}: 2.5 tiles — the maximum`);
+    approx(first(low).amount, u.s.atk * hi * 1.2, `T${tier}: 3.5 tiles`);
+    assert.ok(!hits.some((c) => c.target === far), `T${tier}: (10,9) behind (10,8) in its lane is never reached`);
+    for (const c of hits) assert.deepEqual([c.type, c.dmg.isAttack, c.dmg.isSkill], ['arts', true, true]);
+    const lifts = statusBy(h, u, 'levitate');
+    assert.ok(lifts.length >= 3 && lifts.every((c) => Math.abs(c.duration - lev) < 1e-9), `T${tier}: 浮空 ${lev} s`);
+    assert.ok(statusBy(h, u, 'silence').length >= 3, `T${tier}: 传承终焉 silences the lifted`);
+    u.skill.end('test');
+    h.run(0.1);
+    assert.deepEqual(u.liveRangeGrid, formOf(tier, elite).rangeGrid, `T${tier}: back to 3-1`);
+    approx(u.s.interval, 1.6, `T${tier}: interval back`);
+    done(h);
+  }
+});
+
+test('S3 whirlwinds: they fly 5 tiles at most, a heavy (mass > 3) target is lifted half as long, and those out when she leaves fly on without 传承终焉 or her module\'s RES ignore', () => {
+  // 5 tiles: from her centre (col 4) a box reaches col 9.5 — (11,9) is struck 4.5 tiles out, (10,10) never
+  {
+    const { h, u } = field({ tier: 6, elite: true, skill: 2, col: 4 });
+    u.skill.gainSp(999);
+    const trig = h.spawn('enemy_dummy', { pos: [9, 8] });
+    const edge = h.spawn('enemy_dummy', { pos: [11, 9] }), beyond = h.spawn('enemy_dummy', { pos: [10, 10] });
+    assert.ok(h.runUntil(() => u.skill.active, 2));
+    h.run(7);
+    assert.ok(hitsBy(h, u).some((c) => c.target === trig && c.dmg.isSkill), 'the lane-9 whirlwind');
+    assert.ok(hitsBy(h, u).some((c) => c.target === edge && c.dmg.isSkill), 'struck 4.5 tiles out');
+    assert.ok(!hitsBy(h, u).some((c) => c.target === beyond), '6 tiles out: the whirlwind is gone');
+    done(h);
+  }
+  // her module leaves with her (CCR-X stage 3 on RES 50): a whirlwind out when she retreats hits × 1 without the RES ignore
+  {
+    const { h, u } = field({ tier: 6, elite: true, mod: CCRX, skill: 2 });
+    u.skill.gainSp(999);
+    const e = h.spawn('enemy_r50', { pos: [10, 9] });
+    assert.ok(h.runUntil(() => u.skill.active, 2));
+    assert.ok(h.runUntil(() => u.mem.heyakWinds.length > 0, 5), 'whirlwinds out');
+    h.run(0.5);
+    const atk = u.s.atk;
+    h.b.retreat(u);
+    const s0 = statusBy(h, u, 'silence').length;
+    assert.ok(h.runUntil(() => hitsBy(h, u).some((c) => c.target === e), 6), 'the whirlwind flies on');
+    const c = hitsBy(h, u).find((x) => x.target === e);
+    approx(c.amount, arts(atk * 3.8, 50, 0), 'no 传承终焉 (× 1.2) and no RES ignore');
+    assert.equal(statusBy(h, u, 'silence').length, s0, 'no silence');
+    assert.equal(statusBy(h, u, 'levitate').filter((x) => x.target === e).length, 1, 'still lifted');
+    done(h);
+  }
+  // a mass-4 target: 浮空 halved (2 s → 1 s at rank 7); 曾有羽翼's 失重 lowers it to 3 while above 80 % HP
+  {
+    const { h, u } = field({ tier: 6, elite: true, skill: 2 });
+    u.skill.gainSp(999);
+    const heavy = h.spawn('enemy_heavy', { pos: [10, 9] });
+    heavy.base.massLevel = 4;
+    heavy.markDirty();
+    heavy.hp = heavy.s.maxHp * 0.7; // below 80 %: no 失重
+    assert.ok(h.runUntil(() => u.skill.active, 2));
+    assert.ok(h.runUntil(() => statusBy(h, u, 'levitate').length > 0, 8));
+    approx(statusBy(h, u, 'levitate')[0].duration, 1, 'mass 4: half of 2 s');
+    done(h);
+  }
+});
+
+test('T1 传承终焉: hits on air units × 1.2 and silence 3 s (CCR-X stage 3: × 1.35 / 5 s, ISW-A stage 3: × 1.45 / 5 s; stage 1 modules keep 1.2 / 3); ground targets: neither', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const [ts, sil] = t0Of(tier, elite, elite ? mod : null);
+    const want = elite && tier === 6 && mod === CCRX ? [1.35, 5] : elite && tier === 6 && mod === ISWA ? [1.45, 5] : [1.2, 3];
+    assert.deepEqual([ts, sil], want, `${label(f)}: the data`);
+    const { h, u } = field({ tier, elite, mod, skill: 2 });
+    const fly = h.spawn('enemy_fly', { pos: [10, 6] });
+    const n0 = hitsBy(h, u).length;
+    h.run(1.7);
+    const c = hitsBy(h, u).slice(n0).find((x) => x.target === fly && x.dmg.isAttack);
+    assert.ok(c, label(f));
+    approx(c.amount, u.s.atk * ts, `${label(f)}: × ${ts} on a flyer`);
+    const sl = statusBy(h, u, 'silence').find((x) => x.target === fly);
+    assert.ok(sl, `${label(f)}: silenced`);
+    approx(sl.duration, sil, `${label(f)}: ${sil} s`);
+    h.b.kill(fly, null);
+    const g = h.spawn('enemy_dummy', { pos: [10, 6] });
+    const n1 = hitsBy(h, u).length, s1 = statusBy(h, u, 'silence').length;
+    h.run(1.7);
+    const cg = hitsBy(h, u).slice(n1).find((x) => x.target === g && x.dmg.isAttack);
+    approx(cg.amount, u.s.atk, `${label(f)}: × 1 on the ground`);
+    assert.equal(statusBy(h, u, 'silence').length, s1, `${label(f)}: no silence on the ground`);
+    done(h);
+  }
+});
+
+test('T2 曾有羽翼: 失重 (weight −1) on every enemy of her range above 80 % HP, gone below it or out of range, never on top of another 失重; CCR-Y stage 3: above 50 %, and 20 % 【法术脆弱】 below 50 %', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const y3 = elite && tier === 6 && mod === CCRY;
+    const thr = y3 ? 0.5 : 0.8;
+    const { h, u } = field({ tier, elite, mod, skill: 1 });
+    const inR = h.spawn('enemy_heavy', { pos: [10, 6] }), out = h.spawn('enemy_heavy', { pos: [10, 10] });
+    h.step(2);
+    assert.ok(inR.findBuff('heyak:weightless'), `${label(f)}: full HP in range`);
+    assert.equal(inR.weight, 1, `${label(f)}: mass 2 → 1`);
+    assert.equal(out.findBuff('heyak:weightless'), null, `${label(f)}: out of range`);
+    inR.hp = inR.s.maxHp * (thr + 0.01);
+    h.step();
+    assert.ok(inR.findBuff('heyak:weightless'), `${label(f)}: above ${thr * 100} %`);
+    inR.hp = inR.s.maxHp * (thr - 0.01);
+    h.step();
+    assert.equal(inR.findBuff('heyak:weightless'), null, `${label(f)}: below ${thr * 100} %`);
+    assert.equal(inR.weight, 2, `${label(f)}: mass back`);
+    inR.hp = inR.s.maxHp * 0.3;
+    h.run(0.5);
+    const fr = h.hooksOf('statusApplied').filter((c) => c.source === u && c.status === 'artsFragile' && c.target === inR);
+    assert.equal(fr.length > 0, y3, `${label(f)}: 【法术脆弱】 below 50 %`);
+    if (y3) { assert.equal(fr[0].value, 0.2); approx(inR.s.artsTakenMul, 1.2, `${label(f)}: arts taken × 1.2`); }
+    // another source's 失重 (安洁莉娜's key): not doubled
+    inR.hp = inR.s.maxHp;
+    h.b.addBuff(inR, { key: 'aglina:weightless', status: 'weightless', duration: 1, mods: { massFlat: -1 } });
+    h.step();
+    assert.equal(inR.findBuff('heyak:weightless'), null, `${label(f)}: 同名效果不可叠加`);
+    assert.equal(inR.weight, 1);
+    h.run(1.1);
+    assert.ok(inR.findBuff('heyak:weightless'), `${label(f)}: hers again once the other ended`);
+    h.b.retreat(u);
+    h.step();
+    assert.equal(inR.findBuff('heyak:weightless'), null, `${label(f)}: gone when she leaves`);
+    done(h);
+  }
+  const hp = formOf(6, true).modules.find((m) => m.uniEquipId === CCRY).talentChanges;
+  assert.deepEqual([hp.find((t) => t.talentIndex === 1).bb, hp.find((t) => t.talentIndex === -1).bb], [{ hp_ratio: 0.5 }, { damage_scale: 1.2, hp_ratio: 0.5 }]);
+});
+
+test('modules: CCR-X "无视目标10点法术抗性" (stages 1 and 3); CCR-Y "普通攻击命中精英或领袖敌人时获得1点技力"; ISW-A (集成战略 only): no RES ignore, no SP, no goal-tile 浮空, no radius-1.1 skill splash — its stats and 传承终焉 numbers only', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const { h, u } = field({ tier, elite, mod, skill: 2 });
+    const x = elite && mod === CCRX, y = elite && mod === CCRY, w = elite && mod === ISWA;
+    assert.equal(u.s.resIgnoreFlat, x ? 10 : 0, `${label(f)}: RES ignore`);
+    if (w) assert.match(u.def.raw.trait.moduleDesc, /^在集成战略中/, `${label(f)}: the ISW trait text`);
+    const foe = h.spawn('enemy_r50', { pos: [10, 6] });
+    const n0 = hitsBy(h, u).length;
+    h.run(3.5);
+    const hits = hitsBy(h, u).slice(n0).filter((c) => c.target === foe && c.dmg.isAttack);
+    assert.ok(hits.length >= 2, label(f));
+    approx(hits[0].amount, arts(u.s.atk, 50, x ? 10 : 0), `${label(f)}: arts on RES 50`);
+    const traitSp = () => h.hooksOf('spGain').filter((c) => c.unit === u && c.reason === 'trait').length;
+    assert.equal(traitSp(), 0, `${label(f)}: no SP from a normal enemy`);
+    h.b.kill(foe, null);
+    const el = h.spawn('enemy_elite', { pos: [10, 6] });
+    const k0 = traitSp(), a0 = hitsBy(h, u).filter((c) => c.target === el && c.dmg.isAttack).length;
+    h.run(3.5);
+    const hitsE = hitsBy(h, u).filter((c) => c.target === el && c.dmg.isAttack).length - a0;
+    assert.equal(traitSp() - k0, y ? hitsE : 0, `${label(f)}: +1 SP per hit on an elite`);
+    done(h);
+  }
+  // ISW-A stage 3: a whirlwind strikes its target only (the 1.1 splash is 集成战略-only)
+  const { h, u } = field({ tier: 6, elite: true, mod: ISWA, skill: 2 });
+  u.skill.gainSp(999);
+  const t = h.spawn('enemy_dummy', { pos: [10, 9] });
+  const side = h.spawn('enemy_dummy', { pos: [10, 9] });
+  side.x = 9.6; side.y = 9.7; // 0.67 from it, behind it in lane 10 (whose whirlwind is spent on it), outside lane 9
+  assert.ok(h.runUntil(() => u.skill.active, 2));
+  h.run(8);
+  assert.ok(hitsBy(h, u).some((c) => c.target === t), 'the target');
+  assert.ok(!hitsBy(h, u).some((c) => c.target === side), 'nothing beside it');
+  assert.ok(!statusBy(h, u, 'levitate').some((c) => c.target === side), 'no splash 浮空');
+  done(h);
+});
diff --git a/test/golden/diy.json b/test/golden/diy.json
index e2f9318b..14fdb076 100644
--- a/test/golden/diy.json
+++ b/test/golden/diy.json
@@ -579,127 +579,127 @@
       "snaps": "139545f0 29393223 af71a5ff f0163efe a9da66a7 136d4411 c07df6f7 80c80aa5 9fb44dd7 4ebb38f0 5334365a 625edb1c 0c3fc668 a66e9ef9 dc0775ba 570d25e8 6398e94c ebde2a20 72f3754c bcb5d344 8311f146 9e54ae25"
     },
     "diy-015": {
-      "about": "5_diy1_a=cdfend 5_diy2_b=cdfend 6_diy1_b=saga/S1/002_saga 6_diy2_b=saga/S2/002_saga 6_diy1_b=saga/S3/002_saga 6_diy2_b=saga/S1/003_saga 6_diy1_b=saga/S2/003_saga 6_diy2_b=saga/S3/003_saga 5_diy1_a=cguard 5_diy2_b=cguard 5_diy1_a=csnipe 5_diy2_b=csnipe",
-      "fast": true,
+      "about": "6_diy1_b=saga/S1/002_saga 6_diy2_b=saga/S2/002_saga 6_diy1_b=saga/S3/002_saga 6_diy2_b=saga/S1/003_saga 6_diy1_b=saga/S2/003_saga 6_diy2_b=saga/S3/003_saga 5_diy1_a=amgoat/S1 5_diy2_a=amgoat/S2 5_diy1_a=amgoat/S3 5_diy2_b=amgoat/S1 5_diy1_b=amgoat/S2 5_diy2_b=amgoat/S3",
+      "fast": false,
       "kind": "normal",
       "stageId": "act1autochess_m04",
       "modeId": "mode_single_normal",
       "round": 13,
       "seed": 2805115174,
       "waveId": "act1autochess_h06",
-      "time": 228.93,
-      "ticks": 6868,
+      "time": 223.57,
+      "ticks": 6707,
       "reason": "cleared",
-      "killed": 19,
+      "killed": 33,
       "total": 129,
       "unspawned": 0,
       "bossHpLeft": null,
-      "rngDraws": 145,
+      "rngDraws": 792,
       "errors": {"count":0,"kinds":[]},
-      "players": {"p1":{"killed":19,"total":129,"perfect":false,"leaks":110,"leaksUncounted":0,"coins":0,"dmg":200146,"bossDmg":0,"heal":20892,"deaths":22,"layerGains":{}}},
+      "players": {"p1":{"killed":33,"total":129,"perfect":false,"leaks":96,"leaksUncounted":0,"coins":0,"dmg":664675,"bossDmg":0,"heal":20775,"deaths":20,"layerGains":{}}},
       "units": [
-        ["p1",1,"op","chess_char_5_diy1_a",2,null,0,0,156,0,262,6384,0,19,1],
-        ["p1",2,"op","chess_char_5_diy2_b",2,"none",0,0,138,0,604,5816,0,38,1],
-        ["p1",3,"op","chess_char_6_diy1_b",0,"uniequip_002_saga",0,0,158,0,968,9420,3033,35,2],
-        ["p1",4,"op","chess_char_6_diy2_b",1,"uniequip_002_saga",0,0,101,3,24966,8239,3981,52,7],
-        ["p1",5,"op","chess_char_6_diy1_b",2,"uniequip_002_saga",927.35,1,159,0,36825,10635,5176,50,2],
-        ["p1",6,"op","chess_char_6_diy2_b",0,"uniequip_003_saga",2004,1,161,0,4279,6890,2882,60,2],
-        ["p1",7,"op","chess_char_6_diy1_b",1,"uniequip_003_saga",0,0,132,0,59591,7007,2999,88,7],
-        ["p1",8,"op","chess_char_6_diy2_b",2,"uniequip_003_saga",2004,1,160,0,31668,6829,2821,61,2],
-        ["p1",9,"op","chess_char_5_diy1_a",2,null,2564,1,152,0,4398,5128,0,17,1],
-        ["p1",10,"op","chess_char_5_diy2_b",2,"none",3334,1,145,0,2300,6668,0,14,1],
-        ["p1",11,"op","chess_char_5_diy1_a",2,null,1271,1,4,0,15488,0,0,198,3],
-        ["p1",12,"op","chess_char_5_diy2_b",2,"none",1510,1,5,2,18797,0,0,206,4],
+        ["p1",1,"op","chess_char_6_diy1_b",0,"uniequip_002_saga",0,0,96,0,15524,7159,2901,48,2],
+        ["p1",2,"op","chess_char_6_diy2_b",1,"uniequip_002_saga",0,0,128,0,18790,8884,4626,52,5],
+        ["p1",3,"op","chess_char_6_diy1_b",2,"uniequip_002_saga",0,0,98,0,12660,7206,2948,27,2],
+        ["p1",4,"op","chess_char_6_diy2_b",0,"uniequip_003_saga",2004,1,159,0,6847,7007,2999,54,2],
+        ["p1",5,"op","chess_char_6_diy1_b",1,"uniequip_003_saga",0,0,157,1,46947,10314,4302,76,6],
+        ["p1",6,"op","chess_char_6_diy2_b",2,"uniequip_003_saga",2004,1,158,0,15383,7007,2999,68,3],
+        ["p1",7,"op","chess_char_5_diy1_a",0,null,1359,1,4,0,15995,0,0,31,2],
+        ["p1",8,"op","chess_char_5_diy2_a",1,null,1359,1,5,11,193243,0,0,119,29],
+        ["p1",9,"op","chess_char_5_diy1_a",2,null,1359,1,15,5,204940,0,0,161,2],
+        ["p1",10,"op","chess_char_5_diy2_b",0,"none",1614,1,146,1,25198,3228,0,43,2],
+        ["p1",11,"op","chess_char_5_diy1_b",1,"none",1614,1,143,2,92055,3228,0,48,16],
+        ["p1",12,"op","chess_char_5_diy2_b",2,"none",0,0,138,0,17093,4842,0,28,0],
         ["-","~1","device","trap_1105_accrate",null,null,100,1,1,0,0,0,0,0,null],
         ["-","~2","device","trap_1105_accrate",null,null,100,1,2,0,0,0,0,0,null],
         ["-","~3","device","trap_1105_accrate",null,null,100,1,3,0,0,0,0,0,null]
       ],
-      "enemies": {"enemy_10124_uashld_2":[18,0,18,25716,36236],"enemy_1043_zomsbr":[66,19,47,2425,177615],"enemy_1061_zomshd":[45,0,45,38785,118952]},
-      "hooks": [1,161,6868,1261,1261,3359,3255,44463,41,151,33,32,0,28415,0,62,129,110,1,49,0,0,104],
-      "events": {"atk":1302,"deploy":29,"die":41,"dmg":3255,"fx":167,"leak":110,"skill":65,"spawn":144,"status":44},
-      "fx": {"aoe":14,"buff":14,"dodge":104,"dp":18,"dying":17},
-      "snaps": "bba0f774 83a7fe2a 8e13d5aa 4bb67145 e79aa0b4 38e547de 36b43066 56a64a01 d4d007b7 6e27fab1 f6f8669c bbacc967 be4172d9 d55bad91 4d605caf fb745e4a 93002000 0e1af5c3 a3d025c7 82b41ecd 8e13ba87 c7c33611 5048d3b1"
+      "enemies": {"enemy_10124_uashld_2":[18,0,18,15861,120545],"enemy_1043_zomsbr":[66,31,35,1342,281173],"enemy_1061_zomshd":[45,2,43,33062,392464]},
+      "hooks": [1,159,6707,1048,1048,3575,3461,59651,53,149,71,70,0,32282,0,54,129,96,1,68,0,0,114],
+      "events": {"atk":1249,"deploy":27,"die":53,"dmg":3461,"fx":215,"leak":96,"skill":141,"spawn":144,"status":43},
+      "fx": {"aoe":11,"buff":13,"dodge":114,"dp":15,"dying":17,"explosion":45},
+      "snaps": "16295416 fba275f2 635566cc 2e3e6a18 f20f8ef2 2aaccd2c aae17d6a 99cd3ff6 a1ee2f48 b38c7b9b 5a02d9fe dbd1ec17 05bbeb89 34b71379 e86b1ee6 770c6674 e962160f 957dc960 6f072e78 3ff4fbd4 4b247ed5 22f35900 d30acbaf"
     },
     "diy-016": {
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