diff --git a/server/sim/content/kits/index.js b/server/sim/content/kits/index.js
index eead3b62..0f634e75 100644
--- a/server/sim/content/kits/index.js
+++ b/server/sim/content/kits/index.js
@@ -109,6 +109,9 @@ export const OPERATOR_KIT_FILES = Object.freeze([
   'op-zumama.js',
   'op-judge.js',
   'op-shu.js',
+  'op-pallas.js',
+  'op-lessng.js',
+  'op-demetr.js',
 ]);
 
 /**
diff --git a/server/sim/content/kits/ops/op-demetr.js b/server/sim/content/kits/ops/op-demetr.js
new file mode 100644
index 00000000..efcd419d
--- /dev/null
+++ b/server/sim/content/kits/ops/op-demetr.js
@@ -0,0 +1,315 @@
+// server/sim/content/kits/ops/op-demetr.js — 贝洛内 (char_4037_demetr) 自选 operator kit: 6★ 斗士 (近卫), an owned-6★ pick of
+// the tier-5 and tier-6 自选 slots; every skill, both talents, the trait, his module at every form and his summon 牵绊.
+// Kit contract and the 自选 rules: ../README.md ("How to add an operator (自选)").
+//
+// Forms (data/backups.json units.char_4037_demetr, the DIY slot statuses): normal = E2 Lv1, skills at rank 4, no module;
+// elite = E2 Lv60, rank 7, FGT-Y (his only module) at stage 1 (tier 5) or 3 (tier 6) or none. Potential 0 [ASSUMED: no
+// account]. Sources: character_table / skill_table / battle_equip_table (zh_CN, as built into backups.json; the 牵绊 token
+// record backups.json tokens.token_10065_demetr_dmtpos); PRTS 贝洛内 (家族手段 备注 "防御减少效果于贝洛内每次普通攻击时，计算伤害前
+// 施加（可影响当次攻击）…防御减少方式为最终乘算…多个贝洛内之间的【手段】间仅防御减少量最高者生效…每0.1秒自然更新一次；当具有≥6层层数
+// 的【手段】自然更新/响应更新时，若该【手段】的来源（贝洛内）不处于2技能状态或已离场，层数将强制变回5层…增伤效果为线性提升，可对任何来自
+// 贝洛内的伤害（不止普通攻击）生效"; 街头直觉 备注 "部署时立刻获得80%物理/法术闪避，之后每秒衰减2%（至多衰减20次），最终变为40%";
+// 家主的余裕 备注 "可触发两次第一天赋"; 军师的手段 备注; 清算 备注 — the 牵绊 rules, "每次移动的目标地块必须为合法、可部署、未部署有
+// 牵绊/贝洛内自己以外单位的地面地块", "在受到致命伤害结算后立即结束技能，因返回而部署时获得短暂的不死", "若技能开启时，若存在目标则会立刻
+// 尝试移动；否则会尝试原地移动一次", "技能结束时，若不位于初始位置且场上不存在牵绊，贝洛内将被强制撤退"); PRTS 牵绊 备注 (无敌, 孤立,
+// 晕眩 / 冻结 / 寒冷 / 沉睡 免疫); PRTS 卫戍协议/帮助 特殊策略 (【清算】 "在自定义范围内存在敌人时释放技能", x-2); gamedata_const
+// ba.addash 移动 "不退场，以当前血量在目标位置部署"; the client's battle data — charpack char_4037_demetr (every attack ability
+// carries demetr_t1[def_dec]; S2 mode `demetr_s2[mark]`; S3 modes), skchr_demetr_3 (FlyToTarget / FlyToTargetSecond: the
+// x-2 selector around his located tile, buildable melee low-ground tiles empty but for him and his token; RespawnEnd), buff
+// _template_data `demetr_t1[def_dec]` / `[def_dec_core]` / `[dmg_inc]`, `demetr_t2[evade]`, `demetr_s3[bonus]` / `[target_timer]`
+// / `[timer]` / `[elite_finish_listener]` / `[undeadable]` / `[restore]`; his skeleton (Skill_3_Back 0.5 s).
+// - Trait (斗士) "能够阻挡一个敌人": the profession default (block 1, melee, ground only). Module FGT-Y “实用的工具” "生命值高于
+//   50%时攻击速度+10" (trait bb attack_speed / hp_ratio): ASPD while HP > hp_ratio.
+// - T1 家族手段 (bb attack@def / attack@limited_stack_cnt / attack@s2_limited_stack_cnt / attack@def_dec_duration,
+//   min/max_hp_ratio, min/max_add_on_scale): each of his attack hits puts 【手段】 on its target before the damage (it counts
+//   for that hit): one stack more (at most limited_stack_cnt, s2_limited_stack_cnt while S2 runs), DEF ×(1 − |def| × stacks)
+//   (FINAL_SCALER), def_dec_duration s from the last hit; at s2_limited_stack_cnt stacks the target is 停顿 (sluggish) for as
+//   long as it keeps them; every 0.1 s a 【手段】 above limited_stack_cnt whose 贝洛内 is not in S2 (or not on the field) drops
+//   back to limited_stack_cnt, keeping its time. One 【手段】 per enemy: several 贝洛内 (a shared field) share its stacks and
+//   the higher per-stack value [ASSUMED: the client keeps one per source and only the highest reduction acts]. And every
+//   damage of his ×(1 + add-on), the add-on linear from min_add_on_scale at min_hp_ratio of the target's HP to
+//   max_add_on_scale at max_hp_ratio and below (DamageScaleAccordingToHpRatio, the target's HP before the hit). FGT-Y stage 3:
+//   8 % per stack, +42 % at most.
+// - T2 街头直觉 (bb init_prob / dec_prob / trig_cnt): from every deployment — a 【移动】 is one (demetr_s3_t[born_sync]) —
+//   physical and arts dodge init_prob, −dec_prob each second trig_cnt times (80 % → 40 %), then stays.
+// - S1 家主的余裕 (AUTO, attack SP 4; data DEFAULT): the next attack strikes its target twice for atk_scale × ATK physical
+//   (`_additionalTimes` 1 — both strikes land in the attack [ASSUMED: the skeleton's 0.2 s between them is not modelled]);
+//   each strike adds a 【手段】 stack.
+// - S2 军师的手段 (MANUAL, 15 / 18 s; data ACTIVE_RANGE on its 3-13): range 3-13, ASPD +attack_speed, every attack strikes
+//   attack@max_target targets for attack@atk_scale × ATK physical; 【手段】 up to s2_limited_stack_cnt and 停顿 at the cap. Its
+//   attack is a projectile in the client (projectile_chr_demetr_s2): the hits land at the attack [ASSUMED: flight not
+//   modelled]; ground targets only, as every attack of his (selector targetMotion 1).
+// - S3 清算 (MANUAL, 30 s; data CUSTOM_RANGE on x-2): ATK +atk, ASPD +attack_speed, each damage instance attack@…prob to be
+//   ×prob_atk_scale (AtkScaleUp: on the attack's ATK, before DEF). At the cast he 【移动】s (Battle.moveRedeploy: no exit, HP
+//   / buffs / the skill kept, deploy effects again — 街头直觉's 80 %) onto the tile of the first ground enemy of the x-2 around
+//   his located tile (his tile at the cast) whose tile he may take — a melee-buildable low-ground tile of the field, nobody
+//   on it but his 牵绊 or himself, no knocked-out operator, no other piece's reserved tile — in the usual target order
+//   (sortEnemyTargets); without one he moves in place once. He takes another target the same way when the elite / leader
+//   enemy he attacked last (within attack@finish_listener_duration s) is knocked out, and whenever 1 s (interval × time_stack)
+//   passed without him dealing damage — retried every interval while no target exists, never while he cannot act. Leaving his
+//   located tile he leaves 牵绊 there (when none of his is up); moving back onto it retreats 牵绊 first. A lethal hit while it
+//   runs does not knock him out: 不死, untargetable, blocking nothing, 禁疗 (demetr_s3[undeadable]) and the skill ends on the
+//   next tick. At the end he returns — a 【移动】 onto his located tile (in place when he is there) that empties his SP — and
+//   gets a short 不死 (RETURN_UNDYING); not on that tile and no 牵绊 of his up (or the tile taken) ⇒ forced retreat ('retreat').
+//   The client's wind-up / landing clips (Skill_3_ReStart_Begin 0.2 s, _End 0.3 s) are not modelled: each move is instant
+//   [ASSUMED].
+// - 牵绊 (token_10065_demetr_dmtpos, S3 only — its variant bySkill 2): "贝洛内技能结束时返回该位置，并且其他干员不能部署" — it holds
+//   his located tile; 无敌, untargetable, 孤立, no attack, blocks nothing (blockCnt 0) — PRTS 牵绊 备注.
+// Melee, ground-only (data canHitFly false: no anti-air); ground enemies target him normally (no 起飞 / 迷彩 / 隐匿).
+
+import { num, talentBb, traitBb, skillRec, up, onHitBy, toggleBuff, once } from '../shared/tier1.js';
+import { isElite } from '../shared/tier6.js';
+import { absoluteRangeKeys, sortEnemyTargets } from '../../../targeting.js';
+
+const S1 = 'skchr_demetr_1';
+const S2 = 'skchr_demetr_2';
+const S3 = 'skchr_demetr_3';
+export const BOND = 'token_10065_demetr_dmtpos';
+/** S3's search area when the data carries none (x-2: the 5 × 5 square around him without its corners). */
+const X2 = Object.freeze([[2, -1], [2, 0], [2, 1], [1, -2], [1, -1], [1, 0], [1, 1], [1, 2], [0, -2], [0, -1], [0, 0], [0, 1],
+  [0, 2], [-1, -2], [-1, -1], [-1, 0], [-1, 1], [-1, 2], [-2, -1], [-2, 0], [-2, 1]]);
+/** "因返回而部署时获得短暂的不死" (PRTS 备注; no number): his return clip, Skill_3_Back 0.5 s [ASSUMED]. */
+export const RETURN_UNDYING = 0.5;
+/** 【手段】 on an enemy (one per enemy) and its 停顿 at the S2 cap; the 【手段】 refresh tick (PRTS 备注 "每0.1秒自然更新一次"). */
+export const MEANS_KEY = 'talent:demetr:means';
+export const MEANS_SLUG_KEY = 'talent:demetr:means:sluggish';
+const MEANS_TICK = 0.1;
+export const STREET_KEY = 'talent:demetr:street';
+export const UNDEAD_KEY = 'skill:demetr:undeadable';
+
+const bbOf = (chess, id) => skillRec(chess, id)?.bb ?? {};
+const s2On = (u) => !!(u && u.skill && u.skill.active && u.skill.id === S2);
+const s3On = (u) => !!(u && u.skill && u.skill.active && u.skill.id === S3);
+
+/** 牵绊's kit (a fresh one per summon): no attack, 无敌 and 孤立 (spawnToken adds untargetable). */
+export function bondKit() {
+  return {
+    skill: null,
+    trait: { noAttack: true },
+    install(battle, tok) {
+      battle.addBuff(tok, { key: 'token:demetr:bond', flags: { invulnerable: true, isolated: true }, persist: true, allowDead: true });
+    },
+  };
+}
+
+/** Put / refresh 【手段】 on `e` (the stack rule of demetr_t1[def_dec]) and its 停顿 at the S2 cap. */
+function applyMeans(battle, unit, e, p) {
+  const cur = e.findBuff(MEANS_KEY);
+  const old = cur?.data?.stacks ?? 0;
+  const cap = s2On(unit) ? p.cap8 : p.cap5;
+  const stacks = old < cap ? old + 1 : old;
+  const other = cur && cur.data?.src !== unit && up(cur.data?.src) ? num(cur.data?.pct) : 0;
+  const pct = Math.max(p.pct, other);
+  setMeans(battle, e, unit, { stacks, pct, cap5: p.cap5, cap8: p.cap8 }, p.dur);
+}
+function setMeans(battle, e, src, data, dur) {
+  battle.addBuff(e, { key: MEANS_KEY, duration: dur, refresh: 'replace', source: src, mods: { defMul: Math.max(0, 1 - data.pct * data.stacks) }, data: { ...data, src }, tags: ['talent'] });
+  if (data.stacks >= data.cap8) battle.addBuff(e, { key: MEANS_SLUG_KEY, duration: dur, refresh: 'replace', source: src, status: 'sluggish', mods: { moveMul: 0.2 }, visible: true, tags: ['talent'] });
+  else battle.removeBuff(e, MEANS_SLUG_KEY);
+}
+/** The 0.1 s update of every 【手段】 (battle-wide, once): above the normal cap without its 贝洛内 in S2 ⇒ back to it. */
+function installMeansTick(battle) {
+  once(battle, 'demetr:means', () => battle.every(MEANS_TICK, () => {
+    for (const e of battle.enemies) {
+      if (!e.alive) continue;
+      const b = e.findBuff(MEANS_KEY);
+      const d = b?.data;
+      if (!d || !(d.stacks > d.cap5)) continue;
+      if (d.src && d.src.alive && d.src.deployed && s2On(d.src)) continue;
+      setMeans(battle, e, d.src, { stacks: d.cap5, pct: d.pct, cap5: d.cap5, cap8: d.cap8 }, b.timeLeft);
+    }
+  }));
+}
+
+export default {
+  char_4037_demetr: (bb, chess) => {
+    const tb = traitBb(chess);       // FGT-Y: attack_speed / hp_ratio
+    const t0 = talentBb(chess, 0);   // 家族手段 (FGT-Y stage 3: def −0.08, max_add_on_scale 0.42)
+    const t1 = talentBb(chess, 1);   // 街头直觉
+    const b1 = bbOf(chess, S1), b2 = bbOf(chess, S2), b3 = bbOf(chess, S3);
+    const s2 = skillRec(chess, S2), s3 = skillRec(chess, S3);
+    const area = s3?.trigger?.customRangeGrid ?? X2;
+    const means = {
+      pct: Math.abs(num(t0['attack@def'])), cap5: Math.max(1, Math.floor(num(t0['attack@limited_stack_cnt'], 5))),
+      cap8: Math.max(1, Math.floor(num(t0['attack@s2_limited_stack_cnt'], 8))), dur: num(t0['attack@def_dec_duration'], 10),
+    };
+    const hpHi = num(t0.min_hp_ratio, 1), hpLo = num(t0.max_hp_ratio, 0.2);
+    const addLo = num(t0.min_add_on_scale), addHi = num(t0.max_add_on_scale);
+    const iv = num(b3['attack@demetr_s3[target_timer].interval'], 0.5);
+    const idle = iv * Math.max(1, num(b3['attack@demetr_s3[target_timer].time_stack'], 2));
+    const listen = num(b3['attack@finish_listener_duration'], 3);
+    const prob = num(b3['attack@demetr_s3[bonus].prob']), probScale = num(b3['attack@demetr_s3[bonus].prob_atk_scale'], 1);
+
+    /** A tile he may 【移动】 onto (FlyToTarget selector options, PRTS 备注). */
+    const tileOk = (battle, unit, st, r, c) => {
+      if (!battle.grid.inRect(r, c) || !battle.grid.canStand(r, c) || !battle.grid.isLow(r, c) || battle.downOn(r, c)) return false;
+      if (r === unit.tileR && c === unit.tileC) return true;
+      const occ = battle.unitAt(r, c);
+      if (occ) return occ === st.bond;
+      return !battle.isReservedTile(r, c);
+    };
+    /** The first ground enemy of the x-2 around his located tile standing on a tile he may take. */
+    const pickTarget = (battle, unit, st) => {
+      const keys = absoluteRangeKeys(area, st.home[0], st.home[1], unit.dir, 0);
+      const list = battle.enemiesInKeys(keys, unit, { canHitFly: false, groundOnly: true })
+        .filter((e) => !e.isFlying && tileOk(battle, unit, st, Math.round(e.y), Math.round(e.x)));
+      sortEnemyTargets(battle, unit, list, unit.profile?.priority ?? null);
+      return list[0] ?? null;
+    };
+    const retreatBond = (battle, st) => {
+      if (st.bond && st.bond.alive) battle.retreat(st.bond, { reason: 'expired', permanent: true });
+      st.bond = null;
+    };
+    /** One 【移动】 of S3 onto (r, c): 牵绊 retreated first when it is his located tile, left there when he leaves it. */
+    const moveTo = (battle, unit, st, r, c) => {
+      const [hr, hc] = st.home;
+      const home = r === hr && c === hc;
+      if (home && (unit.tileR !== hr || unit.tileC !== hc)) retreatBond(battle, st);
+      const fromX = unit.x, fromY = unit.y;
+      if (!battle.moveRedeploy(unit, r, c)) return false;
+      battle.fx('teleport', { x: unit.x, y: unit.y, id: unit.id, fromX, fromY });
+      if (!home && !(st.bond && st.bond.alive)) st.bond = battle.spawnToken(unit, BOND, hr, hc, { untargetable: true, kit: bondKit() });
+      return true;
+    };
+    /** FlyToTarget(Second): move onto the next target's tile; false without one (or when he cannot act). */
+    const flyTo = (battle, unit, st) => {
+      if (!up(unit) || !unit.canAct || st.undead) return false;
+      const t = pickTarget(battle, unit, st);
+      if (!t || !moveTo(battle, unit, st, Math.round(t.y), Math.round(t.x))) return false;
+      st.next = battle.time + idle;
+      return true;
+    };
+
+    return {
+      skills: {
+        [S1]: { kind: 'instant', attack: { atkScale: num(b1.atk_scale, 1), hits: 2 } },
+        [S2]: {
+          kind: 'duration',
+          mods: { aspd: num(b2.attack_speed) },
+          targeting: { ...(s2?.rangeGrid?.length ? { rangeGrid: s2.rangeGrid } : {}), maxTargets: Math.max(1, num(b2['attack@max_target'], 3)) },
+          attack: { atkScale: num(b2['attack@atk_scale'], 1) },
+        },
+        [S3]: {
+          kind: 'duration',
+          mods: { atkPct: num(b3['attack@demetr_s3[bonus].atk']), aspd: num(b3['attack@demetr_s3[bonus].attack_speed']) },
+          onStart({ battle, unit, skill }) {
+            const st = { home: [unit.tileR, unit.tileC], bond: null, next: battle.time + idle, act: skill.activations, lastHit: null, lastHitAt: -Infinity, retarget: false, undead: false };
+            unit.mem.demetrS3 = st;
+            // "若技能开启时，若存在目标则会立刻尝试移动；否则会尝试原地移动一次"
+            if (!flyTo(battle, unit, st) && up(unit)) moveTo(battle, unit, st, unit.tileR, unit.tileC);
+          },
+          onTick({ battle, unit }) {
+            const st = unit.mem.demetrS3;
+            if (!st) return;
+            // the elite / leader he attacked last fell: FlyToTargetSecond at once (one try; the idle timer runs on)
+            if (st.retarget) {
+              st.retarget = false;
+              if (flyTo(battle, unit, st)) return;
+            }
+            if (battle.time + 1e-9 < st.next) return;
+            // no target (or he cannot act): the timer keeps counting — the next try at its next interval
+            if (!flyTo(battle, unit, st)) while (st.next <= battle.time + 1e-9) st.next += iv;
+          },
+          onEnd({ battle, unit }) {
+            const st = unit.mem.demetrS3;
+            unit.mem.demetrS3 = null;
+            if (!st) return;
+            battle.removeBuff(unit, UNDEAD_KEY);
+            if (!unit.alive || !unit.deployed) { retreatBond(battle, st); return; }
+            const [hr, hc] = st.home;
+            const atHome = unit.tileR === hr && unit.tileC === hc;
+            const bondUp = !!(st.bond && st.bond.alive);
+            retreatBond(battle, st);
+            const fromX = unit.x, fromY = unit.y;
+            // 【返回】: a 【移动】 onto the located tile (in place when he stands on it) that empties the SP (demetr_s3[restore])
+            if ((atHome || bondUp) && battle.moveRedeploy(unit, hr, hc, { clearSp: true })) {
+              if (!atHome) battle.fx('teleport', { x: unit.x, y: unit.y, id: unit.id, fromX, fromY });
+              unit.mem.demetrGraceUntil = battle.time + RETURN_UNDYING;
+              return;
+            }
+            battle.retreat(unit, { reason: 'retreat' });   // "贝洛内将被强制撤退"
+          },
+        },
+      },
+      talents: [
+        { install(battle, unit) { // 家族手段
+          installMeansTick(battle);
+          battle.on('hit', (c) => {
+            if (c.source !== unit || !c.dmg?.isAttack || !c.target || c.target.side !== 'enemy' || !c.target.alive) return;
+            if (means.pct > 0) applyMeans(battle, unit, c.target, means);
+          }, { owner: unit, priority: 10 });
+          if (addHi || addLo) {
+            onHitBy(battle, unit, (c) => {
+              const r = c.target.hpRatio;
+              const t = hpHi > hpLo ? Math.min(1, Math.max(0, (hpHi - r) / (hpHi - hpLo))) : (r <= hpLo ? 1 : 0);
+              c.dmg.mul *= 1 + addLo + (addHi - addLo) * t;
+            });
+          }
+        } },
+        { install(battle, unit) { // 街头直觉
+          const init = num(t1.init_prob), dec = num(t1.dec_prob), cnt = Math.max(0, Math.floor(num(t1.trig_cnt)));
+          if (!(init > 0)) return;
+          const set = (p) => battle.addBuff(unit, { key: STREET_KEY, mods: { dodgePhys: p, dodgeArts: p }, data: { p }, tags: ['talent'] });
+          battle.on('deploy', (ctx) => {
+            if (ctx.unit !== unit) return;
+            const seq = unit.deploySeq;
+            let p = init, n = 0;
+            set(p);
+            if (!(dec > 0) || !cnt) return;
+            battle.every(1, (b, sc) => {
+              if (!unit.alive || unit.deploySeq !== seq) { sc.cancel(); return; }
+              p = Math.abs(p - dec);
+              set(p);
+              if (++n >= cnt) sc.cancel();
+            }, { owner: unit });
+          }, { owner: unit });
+        } },
+      ],
+      install(battle, unit) {
+        // FGT-Y: 生命值高于50%时攻击速度+10
+        const aspd = num(tb.attack_speed);
+        if (aspd) toggleBuff(battle, unit, 'trait:demetr:aspd', () => unit.hpRatio > num(tb.hp_ratio, 0.5), { aspd });
+        // S3 清算: ×prob_atk_scale at prob per damage instance (AtkScaleUp: the attack's ATK, before DEF)
+        if (prob > 0 && probScale !== 1) {
+          onHitBy(battle, unit, (c) => {
+            if (s3On(unit) && battle.rng.chance(prob)) c.dmg.amount *= probScale;
+          });
+        }
+        // S3: the target he attacked last (an elite / leader one re-targets him when it falls within `listen` s)
+        battle.on('hit', (c) => {
+          const st = unit.mem.demetrS3;
+          if (!st || c.source !== unit || !c.dmg?.isAttack || !c.target || c.target.side !== 'enemy') return;
+          st.lastHit = c.target;
+          st.lastHitAt = battle.time;
+        }, { owner: unit });
+        // S3: 1 s without output damage re-targets him (the timer restarts with each damage instance he deals)
+        battle.on('damaged', (c) => {
+          const st = unit.mem.demetrS3;
+          if (st && c.source === unit && c.target && c.target.side === 'enemy') st.next = battle.time + idle;
+        }, { owner: unit });
+        battle.on('death', (c) => {
+          const st = unit.mem.demetrS3;
+          if (!st || c.reason !== 'killed' || c.unit !== st.lastHit || !isElite(c.unit) || battle.time - st.lastHitAt > listen + 1e-9) return;
+          st.lastHit = null;
+          st.retarget = true;   // taken in his next skill tick (the enemy index of that tick sees every enemy)
+        }, { owner: unit });
+        // S3: 受到致命伤害时不撤退但会结束技能 (demetr_s3[undeadable]); the return's short 不死
+        battle.on('fatal', (c) => {
+          if (c.unit !== unit || c.prevented) return;
+          const st = unit.mem.demetrS3;
+          if (st && s3On(unit)) {
+            c.prevented = true;
+            if (st.undead) return;
+            st.undead = true;
+            battle.addBuff(unit, { key: UNDEAD_KEY, flags: { untargetable: true, noBlock: true, healFree: true }, tags: ['skill'], visible: true });
+            battle.fx('undying', { x: unit.x, y: unit.y, id: unit.id });
+            const act = st.act;
+            battle.after(0, () => { if (unit.mem.demetrS3 === st && s3On(unit) && unit.skill.activations === act) unit.skill.end('fatal'); }, { owner: unit });
+            return;
+          }
+          if (battle.time < (unit.mem.demetrGraceUntil ?? -Infinity) - 1e-9) c.prevented = true;
+        }, { owner: unit, priority: -50 });
+      },
+    };
+  },
+};
diff --git a/server/sim/content/kits/ops/op-lessng.js b/server/sim/content/kits/ops/op-lessng.js
new file mode 100644
index 00000000..58eb2060
--- /dev/null
+++ b/server/sim/content/kits/ops/op-lessng.js
@@ -0,0 +1,160 @@
+// server/sim/content/kits/ops/op-lessng.js — 止颂 (char_4011_lessng) 自选 operator kit: 6★ 无畏者 (近卫), 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_4011_lessng, 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); PRTS 止颂 (苦痛专注 备注
+// "将降低无来源或任意来源于非“自身阻挡的敌人”的物理、法术伤害…伤害降低效果于“受到伤害前”生效…<Y模组>额外效果为在计算伤害前，若伤害
+// 目标满足条件则临时获取…物理穿透（百分比）Buff（不可叠加，直接加算）"; 痛楚砺刃 备注 "天赋于受到伤害时触发，无需成功受到伤害也可
+// 生效…重复受到伤害时，重置本天赋持续时间"; 苦修破誓 备注 "技能期间，持有状态免疫、晕眩反制、寒冷反制、冻结反制…技能开启时，若有
+// 异常状态，会先对自身造成法术伤害（来源为自身，可致死），然后清除自身所有异常状态，最后再获得技能效果"; DRE-X 备注 "于每次计算伤害时检查
+// 目标是否处于阻挡/被阻挡状态…提升效果为攻击力倍率提升"; DRE-Y 备注 "属于免死效果，触发效果后获得属性变化后生命上限100%的生命复原");
+// the client's battle data — buff_template_data `lessng_t1` (ON_APPLYING_MODIFIER: he blocks, the source is not blocked by
+// him ⇒ DamageScale 1 − damage_resistance on PHYSICAL_AND_MAGICAL), `lessng_t2` (ON_TAKE_DAMAGE ⇒ ATK MULTIPLIER for
+// add_atk_duration), `lessng_s3[atk_scale]` / `lessng_e_002_trait[blocked]` (ON_CALCULATE_DAMAGE, CheckBlocked of the
+// target — by anyone — ⇒ AtkScaleUp), `lessng_s3[anti]`, `lessng_e_003_trait` / `lessng_e_003_talent`; charpack
+// char_4011_lessng (S2 mode: `_additionalTimes` 1, its talent with `_applyTalentScale`), skchr_lessng_2 (`_castOnLocate`,
+// the mode for `duration` s), skchr_lessng_3 (`_canUseInAbnormalState`); his skeleton (Skill_2_Loop: OnAttack 0.300 / 0.567 s).
+// - Trait (无畏者) "能够阻挡一个敌人": the profession default (block 1, melee, ground only). Module DRE-X “沉锋之束” "攻击被阻挡
+//   的敌人时攻击力提升至115%" (trait bb atk_scale): ×atk_scale on his attack's ATK against a target blocked by anyone (a
+//   profile dmgMul — the scale of the attack, before DEF). Module DRE-Y “苦修者的抗压训练” "被击倒时不撤退且回复所有生命但生命上限
+//   -60%，攻击速度+30（单次部署只触发1次）" (trait bb max_hp 0.4 / attack_speed / hp_ratio): the first lethal hit of a deployment
+//   is prevented, max HP ×max_hp (FINAL_SCALER) and ASPD +attack_speed for the rest of that deployment, HP set to hp_ratio of
+//   the new max (生命复原, not a heal); not while a 不死 already holds him ("_dontConsumeWhenUndeadable": 坚固维式重锤's window,
+//   items/battle.js holdsUndying).
+// - T1 苦痛专注 "阻挡时，受到来自非自身阻挡敌人的物理和法术伤害降低35%" (bb damage_resistance): while he blocks an enemy, a
+//   physical or arts damage instance whose source is not an enemy he blocks — 无来源, an ally, himself included — is
+//   ×(1 − damage_resistance) (`hit`: before the 伤判 / barrier steps). S2's window doubles it (talent_scale). DRE-Y stage 3:
+//   40 %, and "攻击自身阻挡的敌人时，无视目标12%的防御力" (the hidden module talent's def_penetrate: defIgnorePct on his damage to an
+//   enemy he blocks).
+// - T2 痛楚砺刃 "受到伤害后，攻击力+12%，持续15秒（不可叠加）" (bb atk / add_atk_duration): every damage instance aimed at him
+//   (`hit`, so a dodged or shielded one too; never a 流失) sets ATK +atk for add_atk_duration s, refreshed, never stacked.
+//   DRE-X stage 3: +20 %.
+// - S1 强力击·γ型 (AUTO, attack SP 3; data DEFAULT): the next attack at atk_scale × ATK.
+// - S2 虔修对决 (PASSIVE, 部署后, 18 / 21 s): from every deployment for the skill's duration: 苦痛专注 ×talent_scale, ATK +atk and
+//   every attack strikes twice (2连击 — both strikes land in the attack [ASSUMED: the skeleton's 0.267 s between them is not
+//   modelled]); then back to his single attack (lessng_s2[switch_mode]).
+// - S3 苦修破誓 (MANUAL, 20 s; data DEFAULT): max HP +max_hp (MULTIPLIER), attacks on a blocked target (by anyone) at
+//   lessng_s3[atk_scale] × ATK, immune to every 异常状态 (晕眩, 寒冷, 冻结 … — tier6 ABNORMAL) while it runs. Cast while under a
+//   异常状态: magical_value arts damage to himself first (source himself, may knock him out; 苦痛专注 and 痛楚砺刃 see it as any
+//   damage), then every 异常状态 is cleansed, then the effects apply (the HP buff after the damage). "可以无视异常状态开启": the
+//   basic strategy casts it when he is about to attack, and 沉默 does not hold it back; 晕眩 / 冻结 / 沉睡 stop his attack and so
+//   the cast [ASSUMED: the official 基础策略 waits for an attack too].
+// Melee, ground-only (data canHitFly false: no anti-air); ground enemies target him normally (no 起飞 / 迷彩 / 隐匿).
+
+import { num, talentBb, moduleBb, traitBb, skillRec, up } from '../shared/tier1.js';
+import { ABNORMAL, hasAbnormal, cleanseAbnormal } from '../shared/tier6.js';
+import { holdsUndying } from '../../items/battle.js';
+
+const S1 = 'skchr_lessng_1';
+const S2 = 'skchr_lessng_2';
+const S3 = 'skchr_lessng_3';
+/** S2 虔修对决's window after a deployment (2连击, ATK, 苦痛专注 ×talent_scale). */
+export const DUEL_KEY = 'skill:lessng:duel';
+/** S3 苦修破誓's effects while it runs (max HP; the status immunity and the blocked-target scale read it). */
+export const OATH_KEY = 'skill:lessng:oath';
+export const PAIN_KEY = 'talent:lessng:pain';
+export const REBORN_KEY = 'trait:lessng:reborn';
+
+const bbOf = (chess, id) => skillRec(chess, id)?.bb ?? {};
+/** He blocks at least one living enemy (苦痛专注 "阻挡时"). */
+const blocking = (u) => u.blocking.some((e) => e && e.alive && e.blockedBy === u);
+
+export default {
+  char_4011_lessng: (bb, chess) => {
+    const tb = traitBb(chess);       // DRE-X: atk_scale; DRE-Y: max_hp / attack_speed / hp_ratio / value
+    const t0 = talentBb(chess, 0);   // 苦痛专注 (DRE-Y stage 3: 0.4)
+    const t1 = talentBb(chess, 1);   // 痛楚砺刃 (DRE-X stage 3: 0.2)
+    const hb = moduleBb(chess);      // DRE-Y stage 3: def_penetrate
+    const b1 = bbOf(chess, S1), b2 = bbOf(chess, S2), b3 = bbOf(chess, S3);
+    const s2 = skillRec(chess, S2);
+    const blockedScale = num(tb.atk_scale, 1);
+    const oathScale = num(b3['lessng_s3[atk_scale].atk_scale'], 1);
+    const duelOn = (u) => !!u.findBuff(DUEL_KEY);
+    const oathOn = (u) => !!u.findBuff(OATH_KEY);
+    return {
+      skills: {
+        [S1]: { kind: 'instant', attack: { atkScale: num(b1.atk_scale, 1) } },
+        [S2]: {
+          kind: 'passive',
+          onStart({ battle, unit }) { // every deployment (skills.js reset → passive start)
+            const dur = num(s2?.duration);
+            if (dur > 0) battle.addBuff(unit, { key: DUEL_KEY, duration: dur, mods: { atkPct: num(b2.atk) }, tags: ['skill'], visible: true });
+          },
+        },
+        [S3]: {
+          kind: 'duration',
+          onStart({ battle, unit }) {
+            if (hasAbnormal(unit)) {
+              battle.dealDamage(unit, unit, { amount: num(b3.magical_value), type: 'arts', canDodge: false, isSkill: true, tags: ['skill', 'lessngOath'] });
+              if (!unit.alive) return;
+              cleanseAbnormal(battle, unit);
+            }
+            battle.addBuff(unit, { key: OATH_KEY, mods: { hpPct: num(b3.max_hp) }, tags: ['skill'], visible: true });
+          },
+          onEnd({ battle, unit }) { battle.removeBuff(unit, OATH_KEY); },
+        },
+      },
+      trait: {
+        // S2's 2连击 (only while its window runs; 1 otherwise and under every other skill)
+        hitsFn: (b, u) => (duelOn(u) ? 2 : 1),
+        // DRE-X ×atk_scale and S3 ×lessng_s3[atk_scale] on a blocked target (CheckBlocked of the target: by anyone)
+        dmgMul: (b, u, t) => (t && t.blockedBy ? blockedScale * (oathOn(u) ? oathScale : 1) : 1),
+      },
+      talents: [
+        { install(battle, unit) { // 苦痛专注
+          const cut = num(t0.damage_resistance), scale2 = num(b2.talent_scale, 1);
+          if (!(cut > 0)) return;
+          battle.on('hit', (c) => {
+            if (c.target !== unit || !up(unit) || !blocking(unit)) return;
+            const d = c.dmg;
+            if (!d || (d.type !== 'phys' && d.type !== 'arts')) return;
+            const src = c.source;   // null = 无来源
+            if (src && src.side === 'enemy' && src.blockedBy === unit) return;
+            d.mul *= Math.max(0, 1 - cut * (duelOn(unit) ? scale2 : 1));
+          }, { owner: unit });
+        } },
+        { install(battle, unit) { // 痛楚砺刃
+          const atk = num(t1.atk), dur = num(t1.add_atk_duration, 15);
+          if (!atk) return;
+          battle.on('hit', (c) => {
+            if (c.target !== unit || !up(unit)) return;
+            battle.addBuff(unit, { key: PAIN_KEY, duration: dur, refresh: 'replace', mods: { atkPct: atk }, tags: ['talent'], visible: true });
+          }, { owner: unit });
+        } },
+      ],
+      install(battle, unit) {
+        // DRE-Y stage 3: 攻击自身阻挡的敌人时，无视目标12%的防御力 (every damage of his to an enemy he blocks)
+        const pen = num(hb.def_penetrate);
+        if (pen > 0) {
+          battle.on('hit', (c) => {
+            if (c.source === unit && c.target && c.target.side === 'enemy' && c.target.blockedBy === unit) c.dmg.defIgnorePct += pen;
+          }, { owner: unit });
+        }
+        // DRE-Y trait: 被击倒时不撤退且回复所有生命但生命上限-60%，攻击速度+30（单次部署只触发1次）
+        if (tb.hp_ratio != null && (tb.max_hp != null || tb.value != null)) {
+          const hpMul = tb.max_hp != null ? num(tb.max_hp, 0.4) : 1 - num(tb.value, 0.6);
+          let usedSeq = -1;
+          battle.on('fatal', (c) => {
+            if (c.unit !== unit || c.prevented || usedSeq === unit.deploySeq || holdsUndying(battle, unit)) return;
+            c.prevented = true;
+            usedSeq = unit.deploySeq;
+            battle.addBuff(unit, { key: REBORN_KEY, mods: { hpMul: Math.max(0.05, hpMul), aspd: num(tb.attack_speed) }, tags: ['trait'], visible: true });
+            unit.hp = Math.max(1, unit.s.maxHp * num(tb.hp_ratio, 1));
+            battle.fx('revive', { x: unit.x, y: unit.y, id: unit.id, module: true });
+          }, { owner: unit, priority: -60 });
+        }
+        // S3 苦修破誓: status immunity while it runs; "可以无视异常状态开启" — 沉默 does not hold the basic-strategy cast back
+        battle.on('beforeStatus', (c) => {
+          if (c.target === unit && oathOn(unit) && ABNORMAL.has(c.status)) c.cancel = true;
+        }, { owner: unit });
+        battle.on('beforeAttack', (c) => {
+          const sk = unit.skill;
+          if (c.attacker !== unit || !sk || sk.id !== S3 || !sk.ready || sk.active || sk.opCooling || !unit.s.flags.silence) return;
+          sk.activate('abnormal');
+        }, { owner: unit });
+      },
+    };
+  },
+};
diff --git a/server/sim/content/kits/ops/op-pallas.js b/server/sim/content/kits/ops/op-pallas.js
new file mode 100644
index 00000000..3f91f5d0
--- /dev/null
+++ b/server/sim/content/kits/ops/op-pallas.js
@@ -0,0 +1,168 @@
+// server/sim/content/kits/ops/op-pallas.js — 帕拉斯 (char_485_pallas) 自选 operator kit: 6★ 教官 (近卫), 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_485_pallas, 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); PRTS 帕拉斯 (英勇的祝福 备注
+// "持有增益的干员撤退时，增益立刻转交至帕拉斯；自身持有增益，满足条件的干员部署时，帕拉斯的增益立刻转交给对方"; 女神的振奋 备注
+// "本天赋无视自身获得的禁疗，且必定进行治疗"); gamedata_const ba.strong 精力充沛 "生命值高于一定比例时获得一定属性加成（同类属性取
+// 最高）"; the client's battle data — charpack char_485_pallas (英雄的诞生: an aura on every ally tagged `minos`; S3: an aura on
+// her 1-1 for operators only, professionMask without TOKEN / TRAP), skchr_pallas_1 (`_additionalTimes` 1), buff_template_data
+// `pallas_t_2` / `pallas_t_2[heal]`, `pallas_s_3[peak]`, `pallas_e_t_2[trigger]` and [uc]equips pallas_equip_2_x_p2.
+// - Trait (教官) "可以攻击到较远敌人，攻击自身未阻挡的敌人时攻击力提升至120%": the profession profile (professions.js
+//   instructor: ×atk_scale on a target she does not block, her attacks only; range 2-2). Module INS-X “故乡的山岩” raises
+//   it to 130% (its traitOverride bb atk_scale, read by the profile through the composed record).
+// - T1 英雄的诞生 "在场时，所有【米诺斯】干员生命值高于80%时获得+25%攻击力的精力充沛" (bb peak_performance.hp_ratio / .atk):
+//   while she is deployed, every allied operator of nation minos (her included — the aura has no self exclusion) gets ATK
+//   +atk while its HP ratio is above hp_ratio. INS-X stage 3: above 50 %, +30 % (the module's talent change). 精力充沛 of
+//   several sources is "同类属性取最高": one buff per ally carrying the highest ATK bonus whose HP condition holds (her T1
+//   and her S3 alike, several 帕拉斯 of a shared field too), re-evaluated every tick. 帕拉斯 is the only minos operator of
+//   the data (chess.json and backups.json), so in practice the talent is hers.
+// - T2 女神的振奋 "每攻击一名敌人时为自身与身前一格的我方干员恢复40点生命值" (bb value): pallas_t_2 is ON_OUTPUT_DAMAGE — every
+//   damage instance she deals (S1's two strikes, each S3 target) heals every ally on her 1-1 (her tile and the tile in
+//   front, rotated with her) `value` HP, a heal that ignores 禁疗 (FixedValueHeal _ignoreHealFree; PRTS 备注) but not
+//   "不成为其他角色的治疗目标" (the heal's selector is HEAL-purpose). INS-Y “赫里亚之辉” stage 2+: value 60 and "并使所有【米诺斯】干员
+//   额外恢复40点生命值" (talent bb pallas_e_t_2.value): pallas_e_t_2[trigger] (ON_OUTPUT_DAMAGE) uses pallas_e_heal on every
+//   ally its aura marks — tags minos, _selfOption INCLUDE, so herself too — for that much more (also ignoring 禁疗).
+// - Module INS-Y "可以额外部署在远程位" (hidden module talent buildable_type 2) is a placement rule of the prep, not of the
+//   battle: by the owner's decision of 2026-10-04 (shared/highGround.js) only elite 歌蕾蒂娅 + HOK-Y may take a 高台, so a
+//   帕拉斯 piece stays on the melee tiles — an open question for the owner (DESIGN draft 0.2.0.o9), nothing in this kit.
+// - S1 胜利的连击 (AUTO, attack SP 3; data DEFAULT): the next attack strikes its target twice for atk_scale × ATK physical
+//   (skchr_pallas_1 `_additionalTimes` 1, `_triggerDelta` 0.1 s: the second strike 0.1 s after the first — both land in the
+//   attack here [ASSUMED: the 0.1 s is not modelled]); the instructor ×1.2 applies to each strike.
+// - S2 信念的长鞭 (MANUAL, 20 / 22 s): attack range +ability_range_forward_extend tile forward (2-2 ⇒ 4 tiles: targeting
+//   rangeExtend, the card's live range follows), ATK +atk, every attack attack@buff_prob to stun its target attack@stun s.
+//   Its trigger is the data's DEFAULT: tools/build-data.mjs ATTACK_RANGE_CHANGE does not read "攻击范围向前延伸一格", so the
+//   owner's ACTIVE_RANGE rule (a running range that strictly contains the own one) does not reach it — reported, not
+//   worked around (the brief: report a trigger that looks wrong).
+// - S3 英勇的祝福 (MANUAL, 30 s; data DEFAULT): ATK +atk, attacks hit attack@max_target (3) targets; the operator deployed
+//   on the tile in front of her, when that tile is low ground (pallas_s_3[peak] CheckHeightTypeOfRootTile LOWLAND: on any
+//   other tile the buff is finished on it), holds "生命值高于80%获得+35%攻击力的精力充沛、防御力+20%、阻挡数+1"
+//   (attack@peak_performance.hp_ratio / .atk, attack@def, attack@block_cnt) — else she holds it herself; the holder is
+//   re-read every tick, so it passes to her the moment the front operator leaves and back when one deploys there (PRTS
+//   备注). Summons do not hold it (the aura's professionMask). The DEF / block part is per source (independentCharacterSource).
+// Melee, ground-only (data canHitFly false: no anti-air); ground enemies target her normally (no 起飞 / 迷彩 / 隐匿).
+
+import { num, talentBb, skillRec, up, alliesInGridOf } from '../shared/tier1.js';
+import { frontOf } from '../../../dir.js';
+
+const S1 = 'skchr_pallas_1';
+const S2 = 'skchr_pallas_2';
+const S3 = 'skchr_pallas_3';
+/** The nation of 英雄的诞生 / pallas_e_heal (the client's `minos` tag = character_table nationId minos). */
+const MINOS = 'minos';
+/** T2's heal area: her 1-1 (pallas_t_2 `_rangeId` 1-1) — her tile and the tile in front. */
+const RANGE_1_1 = Object.freeze([[0, 0], [0, 1]]);
+/** The one 精力充沛 buff of an ally (ba.strong "同类属性取最高"). */
+export const PEAK_KEY = 'talent:pallas:peak';
+/** The S3 holder's DEF / block buff, per 帕拉斯 (independentCharacterSource). */
+export const holderKey = (unit) => `skill:pallas:blessing#${unit.id}`;
+
+const bbOf = (chess, id) => skillRec(chess, id)?.bb ?? {};
+const isMinos = (a) => !!a && a.kind === 'op' && (a.def?.raw?.nationId ?? a.def?.nationId) === MINOS;
+
+/**
+ * The 精力充沛 sources of a battle (a Set of `(ally) => ATK bonus`, 0 when one does not apply); the first registration
+ * installs the battle-wide tick that keeps, on every deployed ally, one buff with the highest bonus whose HP condition
+ * holds (never a sum: "同类属性取最高").
+ */
+const PEAKS = new WeakMap();
+function peakSources(battle) {
+  let set = PEAKS.get(battle);
+  if (set) return set;
+  PEAKS.set(battle, (set = new Set()));
+  battle.on('tick', () => {
+    for (const a of battle.allyUnits) {
+      if (!a.alive || !a.deployed || a.kind === 'device') continue;
+      let v = 0;
+      for (const f of set) v = Math.max(v, f(a));
+      const cur = a.findBuff(PEAK_KEY);
+      if ((cur?.data?.v ?? 0) === v) continue;
+      if (v > 0) battle.addBuff(a, { key: PEAK_KEY, mods: { atkPct: v }, data: { v }, tags: ['talent'] });
+      else battle.removeBuff(a, PEAK_KEY);
+    }
+  });
+  return set;
+}
+
+/**
+ * The holder of 英勇的祝福's buff: the operator deployed on the tile in front of her when it stands on low ground (and her
+ * aura may select it), else herself.
+ */
+export function blessingHolder(battle, unit) {
+  const [fr, fc] = frontOf(unit.tileR, unit.tileC, unit.dir, 1);
+  const a = battle.grid.inRect(fr, fc) ? battle.unitAt(fr, fc) : null;
+  if (a && a !== unit && a.side === 'ally' && a.kind === 'op' && a.deployed && a.ground !== false && battle.grid.isLow(fr, fc)
+    && battle.allySelectable(a, unit)) return a;
+  return unit;
+}
+
+export default {
+  char_485_pallas: (bb, chess) => {
+    const t0 = talentBb(chess, 0);   // 英雄的诞生 (INS-X stage 3: hp_ratio 0.5, atk 0.3)
+    const t1 = talentBb(chess, 1);   // 女神的振奋 (INS-Y stage 3: value 60, pallas_e_t_2.value 40)
+    const b1 = bbOf(chess, S1), b2 = bbOf(chess, S2), b3 = bbOf(chess, S3);
+    const blessDef = num(b3['attack@def']), blessBlock = num(b3['attack@block_cnt']);
+    const blessHp = num(b3['attack@peak_performance.hp_ratio'], 0.8), blessAtk = num(b3['attack@peak_performance.atk']);
+    /** Move 英勇的祝福 to the current holder (DEF / block here; its 精力充沛 goes through the shared tick). */
+    const bless = ({ battle, unit }) => {
+      const st = unit.mem.pallasBless ?? (unit.mem.pallasBless = { holder: null });
+      const h = unit.skill?.active && up(unit) ? blessingHolder(battle, unit) : null;
+      if (st.holder === h) return;
+      if (st.holder) battle.removeBuff(st.holder, holderKey(unit));
+      st.holder = h;
+      if (h) battle.addBuff(h, { key: holderKey(unit), source: unit, mods: { defPct: blessDef, blockCnt: blessBlock }, tags: ['skill'], visible: true });
+    };
+    return {
+      skills: {
+        [S1]: { kind: 'instant', attack: { atkScale: num(b1.atk_scale, 1), hits: 2 } },
+        [S2]: {
+          kind: 'duration',
+          mods: { atkPct: num(b2.atk) },
+          targeting: { rangeExtend: Math.max(0, Math.round(num(b2.ability_range_forward_extend))) },
+          attack: {
+            onHit({ battle, unit, target }) {
+              if (target && target.alive && target.side === 'enemy' && battle.rng.chance(num(b2['attack@buff_prob']))) {
+                battle.applyStatus(target, 'stun', { duration: num(b2['attack@stun']), source: unit });
+              }
+            },
+          },
+        },
+        [S3]: {
+          kind: 'duration',
+          mods: { atkPct: num(b3.atk) },
+          targeting: { maxTargets: Math.max(1, num(b3['attack@max_target'], 3)) },
+          onStart: bless,
+          onTick: bless,
+          onEnd: bless,
+        },
+      },
+      talents: [
+        { install(battle, unit) { // 英雄的诞生 (and S3's 精力充沛, same 同类取最高 buff)
+          const hp0 = num(t0['peak_performance.hp_ratio'], 0.8), atk0 = num(t0['peak_performance.atk']);
+          peakSources(battle).add((a) => {
+            if (!up(unit) || !battle.allySelectable(a, unit)) return 0;
+            let v = 0;
+            if (atk0 > 0 && isMinos(a) && a.hpRatio > hp0) v = atk0;
+            if (blessAtk > 0 && unit.mem.pallasBless?.holder === a && unit.skill?.active && a.hpRatio > blessHp) v = Math.max(v, blessAtk);
+            return v;
+          });
+        } },
+        { install(battle, unit) { // 女神的振奋 (+ INS-Y stage 2+: the minos extra heal)
+          const value = num(t1.value), extra = num(t1['pallas_e_t_2.value']);
+          if (!(value > 0) && !(extra > 0)) return;
+          battle.on('damaged', (c) => {
+            if (c.source !== unit || !c.target || c.target.side !== 'enemy' || c.type === 'element' || !up(unit)) return;
+            if (value > 0) {
+              for (const a of alliesInGridOf(battle, unit, RANGE_1_1)) battle.heal(unit, a, value, { self: a === unit, ignoreHealFree: true, tags: ['talent'] });
+            }
+            if (extra > 0) {
+              for (const a of battle.alliesFor(unit)) if (isMinos(a)) battle.heal(unit, a, extra, { self: a === unit, ignoreHealFree: true, tags: ['talent', 'module'] });
+            }
+          }, { owner: unit });
+        } },
+      ],
+    };
+  },
+};
diff --git a/test/content/op_demetr.test.js b/test/content/op_demetr.test.js
new file mode 100644
index 00000000..b6ea8c40
--- /dev/null
+++ b/test/content/op_demetr.test.js
@@ -0,0 +1,377 @@
+// test/content/op_demetr.test.js — the 自选 operator kit of 贝洛内 (char_4037_demetr, 6★ 斗士; kit
+// server/sim/content/kits/ops/op-demetr.js) and his summon 牵绊 (token_10065_demetr_dmtpos), 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 or FGT-Y “实用的工具” 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_demetr.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 { BOND, MEANS_KEY, MEANS_SLUG_KEY, STREET_KEY, UNDEAD_KEY, RETURN_UNDYING } from '../../server/sim/content/kits/ops/op-demetr.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 DEMETR = 'char_4037_demetr';
+const FORMS = BACKUPS.units[DEMETR].forms;
+const SLOT = { 5: 'chess_char_5_diy1_a', 6: 'chess_char_6_diy1_a' };
+const FGTY = 'uniequip_002_demetr';
+const S1 = 'skchr_demetr_1', S2 = 'skchr_demetr_2', S3 = 'skchr_demetr_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 talentOf = (u, i) => u.def.raw.talents.find((t) => t.index === i)?.bb ?? {};
+const approx = (a, b, msg, eps = 1e-6) => assert.ok(Math.abs(a - b) <= eps * Math.max(1, Math.abs(b)), `${msg}: ${a} vs ${b}`);
+const dummy = (key, o = {}) => enemyRec({ key, hp: 1e9, speed: 0, mass: 0, ...o });
+const ENEMIES = {
+  enemy_dummy: dummy('enemy_dummy'), enemy_armor: dummy('enemy_armor', { def: 1000 }), enemy_fly: dummy('enemy_fly', { motion: 'FLY' }),
+  enemy_elite: dummy('enemy_elite', { rank: 'ELITE' }), enemy_hit: dummy('enemy_hit', { atk: 3000, bat: 1 }),
+};
+const FORMS_ALL = [[5, false, null], [6, false, null], ...[5, 6].flatMap((t) => [null, FGTY].map((m) => [t, true, m]))];
+
+/** A battle with 贝洛内 as uid 1 at (row, col) facing RIGHT, plus `others`. */
+function field({ tier = 5, elite = false, mod = null, skill = 2, row = 10, col = 5, others = [], seed = 5, rows = null } = {}) {
+  const h = makeBattle({
+    defs: { enemies: ENEMIES }, timeLimit: 600, autoFinish: false, seed, ...(rows ? { flat: { rows } } : {}),
+    flags: { dpPerSec: 0, dpMax: 999 }, hooks: ['damaged', 'skillStart', 'skillEnd', 'statusApplied', 'deploy', 'death'], captureNoisy: true,
+    units: [{ uid: 1, diy: { slot: SLOT[tier], charId: DEMETR, skillIndex: skill, uniEquipId: mod }, elite, row, col }, ...others],
+  });
+  h.step();
+  return { h, u: h.unit(1) };
+}
+const atkHits = (h, u) => h.hooksOf('damaged').filter((c) => c.source === u && c.dmg?.isAttack);
+const moves = (h, u) => h.hooksOf('deploy').filter((c) => c.unit === u && c.move);
+const bondOf = (h) => h.b.allyUnits.find((a) => a.kind === 'token' && a.defId === BOND && a.alive) ?? null;
+const noSp = (h, u) => h.b.addBuff(u, { key: 'test:noSp', flags: { noSp: true } });   // 阻回: the MANUAL skill stays off
+const meansOf = (e) => e.findBuff(MEANS_KEY)?.data?.stacks ?? 0;
+function done(h) {
+  checkInvariants(h.b);
+  assert.equal(h.b.errors.length, 0, JSON.stringify(h.b.errors[0]));
+}
+const label = ([tier, elite, mod]) => `T${tier} ${elite ? 'elite' : 'normal'} ${mod ?? 'none'}`;
+
+test('贝洛内 in every 自选 form: his operator kit (all three skills authored), the form\'s stats + module attributes, 1-1, blocks 1, melee ground-only, 0.78 s, 叙拉古, no 特质', () => {
+  assert.equal(OPERATOR_KITS[DEMETR], KITS[DEMETR]);
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    for (const skill of [0, 1, 2]) {
+      const { h, u } = field({ tier, elite, mod, skill });
+      const form = formOf(tier, elite), m = elite ? modOf(tier, mod) : null;
+      assert.deepEqual([u.def.charId, u.def.diyFor, u.skill.id, !!u.kit.generic, u.kit.skillSource], [DEMETR, SLOT[tier], form.skills[skill].skillId, false, 'skills'], label(f));
+      assert.deepEqual([u.base.maxHp, u.base.atk, u.base.def], [form.stats.maxHp + (m?.attr.maxHp ?? 0), form.stats.atk + (m?.attr.atk ?? 0), form.stats.def + (m?.attr.def ?? 0)], `${label(f)}: stats`);
+      assert.deepEqual([u.base.blockCnt, u.profile.attack, u.profile.canHitFly, u.profile.sub, u.base.bat, u.dmgType], [1, 'melee', false, 'fighter', 0.78, 'phys'], `${label(f)}: 斗士`);
+      assert.deepEqual(u.liveRangeGrid, form.rangeGrid, `${label(f)}: 1-1`);
+      assert.deepEqual([u.def.bonds, u.def.raw.garrisonIds, u.def.raw.nationId], [['siracusaShip'], [], 'siracusa'], `${label(f)}: bonds / 特质`);
+      assert.ok(!u.s.flags.liftoff && !u.s.flags.camou && !u.s.flags.stealth, `${label(f)}: ground enemies target him`);
+      done(h);
+    }
+  }
+  // E2 Lv1 2152 / 490 / 298, E2 Lv60 2466 / 566 / 336; FGT-Y +140 / +50 → +230 / +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], [2152, 490, 2466, 566]);
+  assert.deepEqual([modOf(5, FGTY).attr, modOf(6, FGTY).attr], [{ maxHp: 140, atk: 50 }, { maxHp: 230, atk: 80 }]);
+});
+
+test('a 自选 pick: 贝洛内 is offered at tiers 5 and 6 and a roster with him passes validateDiyPicks', () => {
+  const data = { chess: CHESS, backups: BACKUPS };
+  assert.ok(KITTED_CHARS.includes(DEMETR));
+  for (const t of [5, 6]) assert.ok(diyPool(t, { data, kitted: KITTED_CHARS }).includes(DEMETR), `tier ${t}`);
+  assert.deepEqual(validateDiyPicks({ [SLOT[6]]: { charId: DEMETR, skillIndex: 2, uniEquipId: FGTY } }, { data, kitted: KITTED_CHARS }),
+    { ok: true, picks: { [SLOT[6]]: { charId: DEMETR, skillIndex: 2, uniEquipId: FGTY } } });
+});
+
+test('FGT-Y “实用的工具”: ASPD +10 while his HP is above 50 % (stages 1 and 3); none without it', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const { h, u } = field({ tier, elite, mod, skill: 0 });
+    const on = elite && mod === FGTY;
+    if (on) assert.deepEqual(u.def.raw.trait.bb, { attack_speed: 10, hp_ratio: 0.5 }, label(f));
+    h.step();
+    assert.equal(u.s.aspd, 100 + (on ? 10 : 0), `${label(f)}: full HP`);
+    u.hp = u.s.maxHp * 0.5;
+    h.step();
+    assert.equal(u.s.aspd, 100, `${label(f)}: at 50 %`);
+    u.hp = u.s.maxHp * 0.51;
+    h.step();
+    assert.equal(u.s.aspd, 100 + (on ? 10 : 0), `${label(f)}: above again`);
+    done(h);
+  }
+});
+
+test('T1 家族手段: each attack hit puts one more 【手段】 stack on its target before its damage (DEF ×(1 − 7 % × n), FGT-Y stage 3: 8 %; at most 5) for 10 s; and his damage ×1 → ×1.28 (×1.42) linearly as the target falls from 100 % to 20 % HP', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const { h, u } = field({ tier, elite, mod, skill: 2 });
+    noSp(h, u);
+    const t = talentOf(u, 0);
+    const y3 = elite && mod === FGTY && tier === 6;
+    assert.deepEqual([t['attack@def'], t['attack@limited_stack_cnt'], t['attack@s2_limited_stack_cnt'], t['attack@def_dec_duration'], t.min_hp_ratio, t.max_hp_ratio, t.max_add_on_scale],
+      [y3 ? -0.08 : -0.07, 5, 8, 10, 1, 0.2, y3 ? 0.42 : 0.28], `${label(f)}: the talent of the form`);
+    const pct = -t['attack@def'];
+    const e = h.spawn('enemy_armor', { pos: [10, 6] });
+    const n0 = atkHits(h, u).length;
+    h.run(8);
+    const hits = atkHits(h, u).slice(n0);
+    assert.ok(hits.length >= 7, `${label(f)}: ${hits.length} attacks`);
+    hits.forEach((c, i) => {
+      const k = Math.min(5, i + 1);
+      approx(c.amount, Math.max(u.s.atk - 1000 * (1 - pct * k), u.s.atk * 0.05), `${label(f)}: attack ${i + 1} at ${k} stack(s)`);
+    });
+    assert.equal(meansOf(e), 5, `${label(f)}: 5 at most`);
+    approx(e.s.def, 1000 * (1 - pct * 5), `${label(f)}: DEF ×${1 - pct * 5} (final multiplier)`);
+    // the HP bonus: 60 % HP ⇒ halfway; 20 % HP and below ⇒ the most
+    for (const [ratio, frac] of [[0.6, 0.5], [0.2, 1], [0.05, 1]]) {
+      e.hp = e.s.maxHp * ratio;
+      const m0 = atkHits(h, u).length;
+      h.runUntil(() => atkHits(h, u).length > m0, 3);
+      const c = atkHits(h, u)[m0];
+      approx(c.amount, Math.max(u.s.atk - e.s.def, u.s.atk * 0.05) * (1 + t.max_add_on_scale * frac), `${label(f)}: at ${ratio * 100} % HP ×${1 + t.max_add_on_scale * frac}`);
+    }
+    // 10 s after the last hit it is gone
+    h.b.retreat(u);
+    h.run(9.5);
+    assert.equal(meansOf(e), 5, `${label(f)}: still there after 9.5 s`);
+    h.run(0.6);
+    assert.equal(e.findBuff(MEANS_KEY), null, `${label(f)}: gone 10 s after his last hit`);
+    approx(e.s.def, 1000, `${label(f)}: DEF back`);
+    done(h);
+  }
+});
+
+test('T2 街头直觉: 80 % physical and arts dodge from every deployment, −2 % each second for 20 s, then 40 % for good', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const { h, u } = field({ tier, elite, mod, skill: 0 });
+    const t = talentOf(u, 1);
+    assert.deepEqual([t.init_prob, t.dec_prob, t.trig_cnt], [0.8, 0.02, 20], label(f));
+    approx(u.s.dodgePhys, 0.8, `${label(f)}: at the deployment`);
+    assert.deepEqual(u.findBuff(STREET_KEY)?.mods, { dodgePhys: 0.8, dodgeArts: 0.8 }, `${label(f)}: one buff, both types`);
+    approx(u.s.dodgeArts, 0.8, `${label(f)}: arts too`);
+    h.run(1.02);
+    approx(u.s.dodgePhys, 0.78, `${label(f)}: after 1 s`);
+    h.run(9);
+    approx(u.s.dodgePhys, 0.6, `${label(f)}: after 10 s`);
+    h.run(10);
+    approx(u.s.dodgePhys, 0.4, `${label(f)}: after 20 s`);
+    h.run(30);
+    approx(u.s.dodgeArts, 0.4, `${label(f)}: stays 40 %`);
+    const e = h.spawn('enemy_dummy', { pos: [11, 8] });
+    let dodged = 0;
+    for (let i = 0; i < 400; i++) { u.hp = u.s.maxHp; if (h.b.dealDamage(e, u, { amount: 10, type: i % 2 ? 'phys' : 'arts' }) === 0) dodged++; }
+    assert.ok(Math.abs(dodged / 400 - 0.4) < 0.07, `${label(f)}: ${dodged} / 400 dodged`);
+    h.b.retreat(u);
+    h.b.redeploy(u);
+    h.step();
+    approx(u.s.dodgePhys, 0.8, `${label(f)}: a new deployment starts again`);
+    done(h);
+  }
+});
+
+test('S1 家主的余裕 (AUTO, attack SP 4, data DEFAULT): the next attack strikes twice for 180 % / 210 % ATK — two 【手段】 stacks', () => {
+  for (const [tier, elite, mod] of [[5, false, null], [6, true, FGTY]]) {
+    const sk = skillOf(tier, elite, S1);
+    const { h, u } = field({ tier, elite, mod, skill: 0 });
+    assert.deepEqual([u.skill.rule, u.skill.spType, u.skill.spCost, sk.skillType, sk.bb.atk_scale], ['DEFAULT', 'attack', 4, 'AUTO', elite ? 2.1 : 1.8], `T${tier}`);
+    const e = h.spawn('enemy_dummy', { pos: [10, 6] });
+    assert.ok(h.runUntil(() => atkHits(h, u).some((c) => c.dmg.isSkill), 20), `T${tier}: cast`);
+    const sk1 = atkHits(h, u).filter((c) => c.dmg.isSkill);
+    assert.equal(sk1.length, 2, `T${tier}: two strikes`);
+    assert.equal(atkHits(h, u).filter((c) => !c.dmg.isSkill).length, 4, `T${tier}: on the 5th attack`);
+    // (×1.0000x: the target's HP is not quite full any more — 家族手段's HP bonus)
+    for (const c of sk1) approx(c.amount, u.s.atk * sk.bb.atk_scale, `T${tier}: ${sk.bb.atk_scale * 100} %`, 1e-4);
+    assert.equal(meansOf(e), 5, `T${tier}: 4 plain + 2 strikes ⇒ capped at 5`);
+    done(h);
+  }
+});
+
+test('S2 军师的手段 (MANUAL, data ACTIVE_RANGE on its 3-13): 15 / 18 s, range 3-13, ASPD +40 / +60, three targets at 155 % / 170 %; 【手段】 up to 8 with 停顿 at 8, back to 5 within 0.1 s after (or once he leaves)', () => {
+  for (const [tier, elite, mod] of [[5, false, null], [6, true, FGTY]]) {
+    const sk = skillOf(tier, elite, S2);
+    const b = sk.bb;
+    assert.deepEqual([sk.duration, b.attack_speed, b['attack@max_target'], b['attack@atk_scale'], sk.rangeId], [elite ? 18 : 15, elite ? 60 : 40, 3, elite ? 1.7 : 1.55, '3-13'], `T${tier}`);
+    const { h, u } = field({ tier, elite, mod, skill: 1 });
+    assert.deepEqual([u.skill.rule, sk.trigger.rawRule], ['ACTIVE_RANGE', 'DEFAULT'], `T${tier}: the owner's ACTIVE_RANGE rule`);
+    assert.deepEqual(sk.trigger.customRangeGrid, sk.rangeGrid);
+    u.skill.gainSp(999);
+    const far = h.spawn('enemy_dummy', { pos: [10, 8] });   // [0, 3]: only in the 3-13
+    assert.ok(h.runUntil(() => u.skill.active, 2), `T${tier}: cast with an enemy in the 3-13 only`);
+    approx(u.skill.timeLeft, sk.duration, `T${tier}: ${sk.duration} s`, 0.05);
+    assert.deepEqual([...u.liveRangeGrid].sort(), [...sk.rangeGrid].sort(), `T${tier}: 3-13 while it runs`);
+    assert.equal(u.s.aspd, 100 + b.attack_speed + (mod ? 10 : 0), `T${tier}: ASPD`);
+    const es = [far, h.spawn('enemy_dummy', { pos: [11, 6] }), h.spawn('enemy_dummy', { pos: [9, 7] }), h.spawn('enemy_dummy', { pos: [10, 7] })];
+    const t0 = h.b.time;
+    h.run(6);
+    const per = new Map();
+    for (const c of atkHits(h, u).filter((x) => x.t > t0)) {
+      per.set(c.dmg.attackId, (per.get(c.dmg.attackId) ?? new Set()).add(c.target));
+      const base = u.s.atk * b['attack@atk_scale'];
+      approx(c.amount, base, `T${tier}: ${b['attack@atk_scale'] * 100} %`, 0.0001);
+    }
+    assert.ok(per.size >= 4 && [...per.values()].every((s) => s.size === 3), `T${tier}: three targets per attack`);
+    const hitOnes = es.filter((e) => meansOf(e) > 0);
+    assert.ok(hitOnes.some((e) => meansOf(e) === 8), `T${tier}: 8 stacks during S2`);
+    for (const e of hitOnes) {
+      assert.ok(meansOf(e) <= 8);
+      assert.equal(!!e.findBuff(MEANS_SLUG_KEY), meansOf(e) === 8, `T${tier}: 停顿 exactly at 8`);
+      if (meansOf(e) === 8) assert.ok(e.buffs.some((x) => x.status === 'sluggish'), `T${tier}: a 停顿 status`);
+    }
+    h.runUntil(() => !u.skill.active, 20);
+    h.run(0.12);
+    for (const e of hitOnes) {
+      assert.equal(meansOf(e), Math.min(5, meansOf(e)), `T${tier}: back to 5`);
+      assert.ok(meansOf(e) <= 5 && !e.findBuff(MEANS_SLUG_KEY), `T${tier}: no 停顿 after`);
+    }
+    assert.deepEqual(u.liveRangeGrid, formOf(tier, elite).rangeGrid, `T${tier}: 1-1 again`);
+    done(h);
+  }
+  // he leaves the field during S2 ⇒ back to 5 at the next update
+  const { h, u } = field({ tier: 6, elite: true, mod: FGTY, skill: 1 });
+  u.skill.gainSp(999);
+  const e = h.spawn('enemy_dummy', { pos: [10, 6] });
+  h.runUntil(() => meansOf(e) === 8, 20);
+  assert.ok(u.skill.active);
+  h.b.retreat(u);
+  h.run(0.12);
+  assert.equal(meansOf(e), 5, 'he left: 5');
+  done(h);
+});
+
+test('S3 清算 (MANUAL, data CUSTOM_RANGE on x-2): 30 s, ATK +110 / 140 %, ASPD +30 / +40; he 【移动】s onto the first ground target of the x-2 (dodge back to 80 %), leaves 牵绊 on his tile; 35 / 40 % of his hits ×1.4 / 1.5', () => {
+  for (const [tier, elite, mod] of [[5, false, null], [6, true, FGTY]]) {
+    const sk = skillOf(tier, elite, S3);
+    const b = sk.bb;
+    assert.deepEqual([sk.duration, b['attack@demetr_s3[bonus].atk'], b['attack@demetr_s3[bonus].attack_speed'], b['attack@demetr_s3[bonus].prob'], b['attack@demetr_s3[bonus].prob_atk_scale'], sk.overrideTokenKey],
+      [30, elite ? 1.4 : 1.1, elite ? 40 : 30, elite ? 0.4 : 0.35, elite ? 1.5 : 1.4, BOND], `T${tier}`);
+    const { h, u } = field({ tier, elite, mod, skill: 2, seed: 13 });
+    assert.deepEqual([u.skill.rule, sk.trigger.rawRule, sk.trigger.customRangeGrid.length], ['CUSTOM_RANGE', 'CUSTOM_RANGE_SEARCH_ENEMY', 21], `T${tier}: x-2 (21 tiles)`);
+    h.run(10);
+    u.skill.gainSp(999);
+    h.run(1);
+    assert.equal(u.skill.activations, 0, `T${tier}: no enemy around, no cast`);
+    assert.ok(u.s.dodgePhys < 0.8, 'his dodge decayed');
+    const e = h.spawn('enemy_dummy', { pos: [11, 7] });   // [1, 2] of his x-2
+    assert.ok(h.runUntil(() => u.skill.active, 1), `T${tier}: cast`);
+    assert.deepEqual([u.tileR, u.tileC], [11, 7], `T${tier}: moved onto its tile`);
+    assert.equal(moves(h, u).length, 1, `T${tier}: one 【移动】`);
+    approx(u.s.dodgePhys, 0.8, `T${tier}: 街头直觉 restarts with the 【移动】`);
+    approx(u.s.atk, u.base.atk * (1 + b['attack@demetr_s3[bonus].atk']), `T${tier}: ATK +${b['attack@demetr_s3[bonus].atk'] * 100} %`);
+    assert.equal(u.s.aspd, 100 + b['attack@demetr_s3[bonus].attack_speed'] + (mod ? 10 : 0), `T${tier}: ASPD`);
+    const bond = bondOf(h);
+    assert.ok(bond, `T${tier}: 牵绊`);
+    assert.deepEqual([bond.tileR, bond.tileC, bond.ownerUnit === u, bond.s.flags.invulnerable, bond.s.flags.untargetable, bond.s.flags.isolated, bond.profile.noAttack, bond.s.blockCnt],
+      [10, 5, true, true, true, true, true, 0], `T${tier}: on his tile, 无敌 / untargetable / 孤立, no attack, blocks nothing`);
+    assert.equal(h.b.isReservedTile(10, 5), true, `T${tier}: nobody else deploys there`);
+    // the crits
+    const t0 = h.b.time;
+    u.skill.extend(200);
+    h.run(150);
+    const hits = atkHits(h, u).filter((c) => c.t > t0 && c.target === e);
+    const atk = u.s.atk;
+    const big = hits.filter((c) => Math.abs(c.amount - atk * b['attack@demetr_s3[bonus].prob_atk_scale'] * (c.dmg.mul ?? 1)) < 1e-3 * atk).length;
+    const plain = hits.filter((c) => Math.abs(c.amount - atk * (c.dmg.mul ?? 1)) < 1e-3 * atk).length;
+    assert.equal(big + plain, hits.length, `T${tier}: every hit is ×1 or ×${b['attack@demetr_s3[bonus].prob_atk_scale']}`);
+    assert.ok(Math.abs(big / hits.length - b['attack@demetr_s3[bonus].prob']) < 0.06, `T${tier}: ${big} / ${hits.length} ≈ ${b['attack@demetr_s3[bonus].prob']}`);
+    done(h);
+  }
+});
+
+test('S3 清算 targets: ground enemies only, on a tile he may take (melee-buildable low ground, nobody but him / 牵绊) — else he 【移动】s in place once; another target 1 s after his last damage, at once when the elite he attacked falls; moving home retreats 牵绊 first', () => {
+  // (a) a flyer and an enemy on a floor tile (build NONE): an in-place move, 牵绊 never placed
+  {
+    const rows = { 11: '##hrrrfrrrfrrrrrrrf##' };   // (11, 6) = floor
+    const { h, u } = field({ tier: 6, elite: true, mod: FGTY, skill: 2, rows });
+    assert.equal(h.b.grid.canStand(11, 6), false);
+    h.spawn('enemy_fly', { pos: [10, 6] });
+    const onFloor = h.spawn('enemy_dummy', { pos: [11, 6] });
+    u.skill.gainSp(999);
+    assert.ok(h.runUntil(() => u.skill.active, 1), 'cast (the flyer counts for CUSTOM_RANGE)');
+    assert.deepEqual([u.tileR, u.tileC, moves(h, u).length, !!bondOf(h)], [10, 5, 1, false], 'an in-place 【移动】, no 牵绊');
+    assert.ok(onFloor.alive);
+    done(h);
+  }
+  // (b) the idle re-target, the elite re-target, home
+  {
+    const { h, u } = field({ tier: 6, elite: true, mod: FGTY, skill: 2 });
+    const e1 = h.spawn('enemy_dummy', { pos: [11, 7] });
+    u.skill.gainSp(999);
+    assert.ok(h.runUntil(() => u.skill.active, 1));
+    assert.deepEqual([u.tileR, u.tileC], [11, 7]);
+    h.run(2);
+    h.b.kill(e1, null);
+    const last = Math.max(...atkHits(h, u).map((c) => c.t));
+    const e2 = h.spawn('enemy_dummy', { pos: [9, 6] });
+    assert.ok(h.runUntil(() => u.tileR === 9 && u.tileC === 6, 3), 'the next target');
+    assert.ok(h.b.time >= last + 1 - 1e-6 && h.b.time <= last + 1 + 0.1, `1 s after his last damage (${h.b.time} vs ${last})`);
+    assert.equal(moves(h, u).length, 2);
+    assert.deepEqual([bondOf(h).tileR, bondOf(h).tileC], [10, 5], 'one 牵绊, still on his tile');
+    assert.equal(h.b.allyUnits.filter((a) => a.kind === 'token' && a.alive).length, 1);
+    // the elite he attacks falls ⇒ at once (the next tick), not 1 s later
+    h.b.kill(e2, null);
+    const el = h.spawn('enemy_elite', { pos: [9, 6] });   // on his tile
+    h.runUntil(() => atkHits(h, u).some((c) => c.target === el), 2);
+    const home = h.spawn('enemy_dummy', { pos: [10, 5] });   // on 牵绊's tile: his located tile
+    h.b.kill(el, null);
+    const tk = h.b.time;
+    assert.ok(h.runUntil(() => u.tileR === 10 && u.tileC === 5, 0.2), 'back home on the next tick');
+    assert.ok(h.b.time - tk < 0.05, 'at once');
+    assert.equal(bondOf(h), null, '牵绊 retreated first (his located tile)');
+    assert.ok(home.alive);
+    // the end: a 【返回】 in place, the SP emptied, a short 不死
+    h.runUntil(() => !u.skill.active, 40);
+    assert.deepEqual([u.tileR, u.tileC], [10, 5]);
+    assert.ok(u.skill.sp < 0.1, `SP emptied (${u.skill.sp})`);
+    assert.equal(moves(h, u).length, 4, 'cast, idle, elite, return');
+    done(h);
+  }
+});
+
+test('S3 清算: a lethal hit while it runs ⇒ 不死 / untargetable / no block / 禁疗, the skill ends at once and he returns (a short 不死 after); away without 牵绊 at the end ⇒ forced retreat', () => {
+  {
+    const { h, u } = field({ tier: 5, elite: false, skill: 2 });
+    const e = h.spawn('enemy_dummy', { pos: [11, 7] });
+    u.skill.gainSp(999);
+    assert.ok(h.runUntil(() => u.skill.active, 1));
+    assert.deepEqual([u.tileR, u.tileC], [11, 7]);
+    h.b.dealDamage(e, u, { amount: 1e7, type: 'true' });
+    assert.ok(u.alive, 'not knocked out');
+    assert.ok(u.hp >= 1 && u.hp <= 1.0001, 'held at 1 HP');
+    assert.deepEqual([u.s.flags.untargetable, u.s.flags.noBlock, u.s.flags.healFree], [true, true, true], 'demetr_s3[undeadable]');
+    h.b.dealDamage(e, u, { amount: 1e7, type: 'true' });
+    assert.ok(u.alive, 'still 不死 until the skill ends');
+    h.step();
+    h.step();
+    assert.ok(!u.skill.active, 'the skill ended');
+    assert.deepEqual([u.tileR, u.tileC, !!bondOf(h), !!u.findBuff(UNDEAD_KEY)], [10, 5, false, false], 'returned home');
+    assert.equal(h.hooksOf('skillEnd').find((c) => c.unit === u)?.reason, 'fatal');
+    h.b.dealDamage(e, u, { amount: 1e7, type: 'true' });
+    assert.ok(u.alive, `a short 不死 after the return (${RETURN_UNDYING} s)`);
+    h.run(RETURN_UNDYING + 0.05);
+    h.b.dealDamage(e, u, { amount: 1e7, type: 'true' });
+    assert.ok(!u.alive, 'then a knock-out');
+    done(h);
+  }
+  {
+    const { h, u } = field({ tier: 6, elite: true, mod: FGTY, skill: 2 });
+    h.spawn('enemy_dummy', { pos: [9, 6] });
+    u.skill.gainSp(999);
+    assert.ok(h.runUntil(() => u.skill.active, 1));
+    h.b.retreat(bondOf(h), { reason: 'expired', permanent: true });
+    h.runUntil(() => !u.skill.active, 40);
+    assert.ok(!u.alive && u.removeReason === 'retreat', 'forced retreat');
+    assert.ok(h.b.isDown(u), 'lies down and redeploys by the normal rule');
+    done(h);
+  }
+  // 牵绊 belongs to S3: never under S1 / S2
+  for (const skill of [0, 1]) {
+    const { h, u } = field({ tier: 6, elite: true, mod: FGTY, skill });
+    for (const pos of [[10, 6], [11, 7], [9, 6]]) h.spawn('enemy_dummy', { pos });
+    u.skill.gainSp(999);
+    h.run(30);
+    assert.equal(h.b.allyUnits.filter((a) => a.kind === 'token').length, 0, `S${skill + 1}: no 牵绊`);
+    assert.equal(moves(h, u).length, 0, `S${skill + 1}: no 【移动】`);
+    done(h);
+  }
+});
diff --git a/test/content/op_lessng.test.js b/test/content/op_lessng.test.js
new file mode 100644
index 00000000..b0a41b98
--- /dev/null
+++ b/test/content/op_lessng.test.js
@@ -0,0 +1,363 @@
+// test/content/op_lessng.test.js — the 自选 operator kit of 止颂 (char_4011_lessng, 6★ 无畏者; kit
+// server/sim/content/kits/ops/op-lessng.js), fielded the production way (a DIY slot + its `diy` pick, simdata getDiy) in
+// every form: tiers 5 / 6, normal (E2 Lv1, skill rank 4, no module) and elite (E2 Lv60, rank 7) with no module, DRE-X
+// “沉锋之束” or DRE-Y “苦修者的抗压训练” at stage 1 (tier 5) / 3 (tier 6). Every number is read back from data/backups.json
+// (the form of that slot status); the fidelity checklist of kits/README.md item by item.
+// Run: node --test test/content/op_lessng.test.js
+
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { makeBattle, enemyRec, chessRec, checkInvariants } from '../helpers/battleHarness.js';
+import { KITTED_CHARS, OPERATOR_KITS, KITS } from '../../server/sim/content/kits/index.js';
+import { DUEL_KEY, OATH_KEY, PAIN_KEY, REBORN_KEY } from '../../server/sim/content/kits/ops/op-lessng.js';
+import { diyPool, validateDiyPicks } from '../../shared/diy.js';
+
+const load = (f) => JSON.parse(readFileSync(new URL(`../../data/${f}.json`, import.meta.url), 'utf8'));
+const CHESS = load('chess');
+const BACKUPS = load('backups');
+const LESSNG = 'char_4011_lessng';
+const FORMS = BACKUPS.units[LESSNG].forms;
+const SLOT = { 5: 'chess_char_5_diy1_a', 6: 'chess_char_6_diy1_a' };
+const DREX = 'uniequip_002_lessng', DREY = 'uniequip_003_lessng';
+const S1 = 'skchr_lessng_1', S2 = 'skchr_lessng_2', S3 = 'skchr_lessng_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 talentOf = (u, i) => u.def.raw.talents.find((t) => t.index === i)?.bb ?? {};
+const approx = (a, b, msg, eps = 1e-6) => assert.ok(Math.abs(a - b) <= eps * Math.max(1, Math.abs(b)), `${msg}: ${a} vs ${b}`);
+const dummy = (key, o = {}) => enemyRec({ key, hp: 1e9, speed: 0, mass: 0, ...o });
+const ENEMIES = { enemy_dummy: dummy('enemy_dummy'), enemy_fly: dummy('enemy_fly', { motion: 'FLY' }), enemy_walk: enemyRec({ key: 'enemy_walk', hp: 1e9, speed: 0.6, mass: 0 }) };
+const FORMS_ALL = [[5, false, null], [6, false, null], ...[5, 6].flatMap((t) => [null, DREX, DREY].map((m) => [t, true, m]))];
+/** A plain ally (no kit, no damage modifiers) for friendly-damage checks. */
+const PLAIN = chessRec({ id: 'test_plain_a', name: '测试', skill: null });
+
+/** A battle with 止颂 as uid 1 at (row, col) facing RIGHT, plus `others`. */
+function field({ tier = 5, elite = false, mod = null, skill = 0, row = 10, col = 5, others = [], seed = 5 } = {}) {
+  const h = makeBattle({
+    defs: { enemies: ENEMIES, chess: { test_plain_a: PLAIN } }, timeLimit: 600, autoFinish: false, seed,
+    flags: { dpPerSec: 0, dpMax: 999 }, hooks: ['damaged', 'skillStart', 'skillEnd', 'statusApplied'], captureNoisy: true,
+    units: [{ uid: 1, diy: { slot: SLOT[tier], charId: LESSNG, skillIndex: skill, uniEquipId: mod }, elite, row, col }, ...others],
+  });
+  h.step();
+  return { h, u: h.unit(1) };
+}
+/** 止颂 on row 9 with a walker blocked by her. */
+function blocked(o = {}) {
+  const r = field({ row: 9, ...o });
+  const w = r.h.spawn('enemy_walk', { routeIndex: 0 });
+  assert.ok(r.h.runUntil(() => w.blockedBy === r.u, 30), 'the walker reaches her');
+  return { ...r, w };
+}
+const atkHits = (h, u) => h.hooksOf('damaged').filter((c) => c.source === u && c.dmg?.isAttack);
+const noSp = (h, u) => h.b.addBuff(u, { key: 'test:noSp', flags: { noSp: true } });   // 阻回: the MANUAL skill stays off
+function done(h) {
+  checkInvariants(h.b);
+  assert.equal(h.b.errors.length, 0, JSON.stringify(h.b.errors[0]));
+}
+const label = ([tier, elite, mod]) => `T${tier} ${elite ? 'elite' : 'normal'} ${mod ?? 'none'}`;
+
+test('止颂 in every 自选 form: his operator kit (all three skills authored), the form\'s stats + module attributes, 1-1, blocks 1, melee ground-only, 1.5 s, 莱塔尼亚, no 特质', () => {
+  assert.equal(OPERATOR_KITS[LESSNG], KITS[LESSNG]);
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    for (const skill of [0, 1, 2]) {
+      const { h, u } = field({ tier, elite, mod, skill });
+      const form = formOf(tier, elite), m = elite ? modOf(tier, mod) : null;
+      assert.deepEqual([u.def.charId, u.def.diyFor, u.skill.id, !!u.kit.generic, u.kit.skillSource], [LESSNG, SLOT[tier], form.skills[skill].skillId, false, 'skills'], label(f));
+      assert.deepEqual([u.base.maxHp, u.base.atk, u.base.def], [form.stats.maxHp + (m?.attr.maxHp ?? 0), form.stats.atk + (m?.attr.atk ?? 0), form.stats.def + (m?.attr.def ?? 0)], `${label(f)}: stats`);
+      assert.deepEqual([u.base.blockCnt, u.profile.attack, u.profile.canHitFly, u.profile.sub, u.base.bat, u.dmgType], [1, 'melee', false, 'fearless', 1.5, 'phys'], `${label(f)}: 无畏者`);
+      assert.deepEqual(u.liveRangeGrid, form.rangeGrid, `${label(f)}: 1-1`);
+      assert.deepEqual([u.def.bonds, u.def.raw.garrisonIds, u.def.raw.nationId], [['emptyShip'], [], 'leithanien'], `${label(f)}: bonds / 特质`);
+      assert.ok(!u.s.flags.liftoff && !u.s.flags.camou && !u.s.flags.stealth, `${label(f)}: ground enemies target him`);
+      done(h);
+    }
+  }
+  // E2 Lv1 2798 / 866 / 232, E2 Lv60 3384 / 984 / 262; DRE-X +230 / +17 / +17 → +400 / +30 / +30; DRE-Y +300 / +55 → +450 / +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], [2798, 866, 3384, 984]);
+  assert.deepEqual([modOf(5, DREX).attr, modOf(6, DREX).attr, modOf(5, DREY).attr, modOf(6, DREY).attr],
+    [{ maxHp: 230, atk: 17, def: 17 }, { maxHp: 400, atk: 30, def: 30 }, { maxHp: 300, atk: 55 }, { maxHp: 450, atk: 80 }]);
+});
+
+test('a 自选 pick: 止颂 is offered at tiers 5 and 6 and a roster with him passes validateDiyPicks', () => {
+  const data = { chess: CHESS, backups: BACKUPS };
+  assert.ok(KITTED_CHARS.includes(LESSNG));
+  for (const t of [5, 6]) assert.ok(diyPool(t, { data, kitted: KITTED_CHARS }).includes(LESSNG), `tier ${t}`);
+  assert.deepEqual(validateDiyPicks({ [SLOT[6]]: { charId: LESSNG, skillIndex: 1, uniEquipId: DREY } }, { data, kitted: KITTED_CHARS }),
+    { ok: true, picks: { [SLOT[6]]: { charId: LESSNG, skillIndex: 1, uniEquipId: DREY } } });
+});
+
+test('T1 苦痛专注: while he blocks, physical / arts damage from anyone but an enemy he blocks — 无来源, allies, himself included — ×0.65 (DRE-Y stage 3: ×0.6); none while not blocking, none on true damage', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const y3 = elite && mod === DREY && tier === 6;
+    const cut = talentOf(field({ tier, elite, mod }).u, 0).damage_resistance;
+    assert.equal(cut, y3 ? 0.4 : 0.35, `${label(f)}: the talent of the form`);
+    const { h, u, w } = blocked({ tier, elite, mod, others: [{ uid: 2, chessId: 'test_plain_a', row: 11, col: 3 }] });
+    const ally = h.unit(2);
+    const other = h.spawn('enemy_dummy', { pos: [11, 8] });
+    const hit = (src, d) => { u.hp = u.s.maxHp; return h.b.dealDamage(src, u, d); };   // (full HP: the return value is the HP removed)
+    const arts = (src) => hit(src, { amount: 1000, type: 'arts' });
+    approx(arts(other), 1000 * (1 - cut), `${label(f)}: an enemy he does not block`);
+    approx(arts(w), 1000, `${label(f)}: the enemy he blocks`);
+    approx(arts(null), 1000 * (1 - cut), `${label(f)}: 无来源`);
+    approx(arts(ally), 1000 * (1 - cut), `${label(f)}: an ally`);
+    approx(arts(u), 1000 * (1 - cut), `${label(f)}: himself`);
+    approx(hit(other, { amount: 1000, type: 'true' }), 1000, `${label(f)}: true damage`);
+    approx(hit(other, { amount: 2000, type: 'phys' }), (2000 - u.s.def) * (1 - cut), `${label(f)}: physical`);
+    u.hp = u.s.maxHp;
+    h.b.releaseBlocked(u);
+    h.b.kill(w, null);
+    h.step();
+    assert.equal(u.blocking.length, 0);
+    approx(arts(other), 1000, `${label(f)}: not while he blocks nobody`);
+    done(h);
+  }
+});
+
+test('T2 痛楚砺刃: any damage aimed at him (a dodged one too) ⇒ ATK +12 % (DRE-X stage 3: +20 %) for 15 s, refreshed, never stacked', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const { h, u } = field({ tier, elite, mod });
+    const t = talentOf(u, 1);
+    const x3 = elite && mod === DREX && tier === 6;
+    assert.deepEqual([t.atk, t.add_atk_duration], [x3 ? 0.2 : 0.12, 15], `${label(f)}: the talent of the form`);
+    const e = h.spawn('enemy_dummy', { pos: [11, 8] });
+    assert.equal(u.findBuff(PAIN_KEY), null);
+    h.b.addBuff(u, { key: 'test:dodge', mods: { dodgePhys: 1 } });
+    assert.equal(h.b.dealDamage(e, u, { amount: 500, type: 'phys' }), 0, `${label(f)}: dodged`);
+    assert.deepEqual(u.findBuff(PAIN_KEY)?.mods, { atkPct: t.atk }, `${label(f)}: still triggered`);
+    approx(u.s.atk, u.base.atk * (1 + t.atk), `${label(f)}: ATK +${t.atk * 100} %`);
+    h.b.removeBuff(u, 'test:dodge');
+    h.run(10);
+    h.b.dealDamage(e, u, { amount: 100, type: 'arts' });
+    h.b.dealDamage(null, u, { amount: 100, type: 'true' });
+    approx(u.findBuff(PAIN_KEY).timeLeft, 15, `${label(f)}: refreshed to 15 s`, 0.01);
+    approx(u.s.atk, u.base.atk * (1 + t.atk), `${label(f)}: not stacked`);
+    h.run(15.1);
+    assert.equal(u.findBuff(PAIN_KEY), null, `${label(f)}: gone 15 s after the last hit`);
+    done(h);
+  }
+});
+
+test('S1 强力击·γ型 (AUTO, attack SP 3, data DEFAULT): the next attack at 205 % / 225 % ATK (× DRE-X 115 % on a blocked target)', () => {
+  for (const [tier, elite, mod] of [[5, false, null], [6, true, DREX], [5, true, DREY]]) {
+    const sk = skillOf(tier, elite, S1);
+    const { h, u, w } = blocked({ tier, elite, mod, skill: 0 });
+    assert.deepEqual([u.skill.rule, u.skill.spType, u.skill.spCost, sk.skillType, sk.bb.atk_scale], ['DEFAULT', 'attack', 3, 'AUTO', elite ? 2.25 : 2.05], `T${tier}`);
+    const scale = mod === DREX ? modOf(tier, DREX).traitOverride.bb.atk_scale : 1;
+    const t0 = h.b.time;
+    assert.ok(h.runUntil(() => atkHits(h, u).some((c) => c.dmg.isSkill && c.t > t0), 20), `T${tier}: cast`);
+    const hits = atkHits(h, u).filter((c) => c.t > t0 && c.target === w);
+    const sk1 = hits.find((c) => c.dmg.isSkill);
+    approx(sk1.amount, u.s.atk * sk.bb.atk_scale * scale, `T${tier}: ${sk.bb.atk_scale * 100} %`);
+    for (const c of hits.filter((x) => !x.dmg.isSkill)) approx(c.amount, u.s.atk * scale, `T${tier}: plain attacks`);
+    done(h);
+  }
+});
+
+test('S2 虔修对决 (PASSIVE, 部署后): for 18 / 21 s from every deployment ATK +25 / 35 %, two strikes per attack and 苦痛专注 ×2; then single strikes', () => {
+  for (const [tier, elite, mod] of [[5, false, null], [6, true, DREY], [6, true, DREX]]) {
+    const sk = skillOf(tier, elite, S2);
+    assert.deepEqual([sk.skillType, sk.spType, sk.duration, sk.bb.atk, sk.bb.talent_scale], ['PASSIVE', 'ON_DEPLOY', elite ? 21 : 18, elite ? 0.35 : 0.25, 2], `T${tier}`);
+    const { h, u, w } = blocked({ tier, elite, mod, skill: 1 });
+    const cut = talentOf(u, 0).damage_resistance;
+    assert.ok(h.b.time < sk.duration, 'the walker arrived inside the window');
+    assert.deepEqual(u.findBuff(DUEL_KEY)?.mods, { atkPct: sk.bb.atk }, `T${tier}: ATK +${sk.bb.atk * 100} %`);
+    const other = h.spawn('enemy_dummy', { pos: [11, 8] });
+    approx(h.b.dealDamage(other, u, { amount: 1000, type: 'arts' }), 1000 * (1 - cut * 2), `T${tier}: 苦痛专注 ×2`);
+    const t0 = h.b.time;
+    h.runUntil(() => !u.findBuff(DUEL_KEY), 30);
+    approx(h.b.time, sk.duration, `T${tier}: the window ends ${sk.duration} s after the deployment`, 0.05);
+    const inWin = new Map();
+    for (const c of atkHits(h, u).filter((x) => x.t > t0)) inWin.set(c.dmg.attackId, (inWin.get(c.dmg.attackId) ?? 0) + 1);
+    assert.ok(inWin.size >= 2 && [...inWin.values()].every((n) => n === 2), `T${tier}: two strikes per attack (${[...inWin.values()]})`);
+    const t1 = h.b.time;
+    h.run(5);
+    const after = new Map();
+    for (const c of atkHits(h, u).filter((x) => x.t > t1)) after.set(c.dmg.attackId, (after.get(c.dmg.attackId) ?? 0) + 1);
+    assert.ok(after.size >= 2 && [...after.values()].every((n) => n === 1), `T${tier}: single strikes after`);
+    approx(u.s.atk, u.base.atk * (1 + (u.findBuff(PAIN_KEY) ? talentOf(u, 1).atk : 0)), `T${tier}: ATK back`);
+    approx(h.b.dealDamage(other, u, { amount: 1000, type: 'arts' }), 1000 * (1 - cut), `T${tier}: 苦痛专注 ×1`);
+    // a redeploy restarts the window
+    h.b.retreat(u);
+    h.b.redeploy(u);
+    h.step();
+    approx(u.findBuff(DUEL_KEY)?.timeLeft ?? 0, sk.duration, `T${tier}: again for ${sk.duration} s`, 0.05);
+    assert.equal(w.alive, true);
+    done(h);
+  }
+});
+
+test('S3 苦修破誓 (MANUAL, data DEFAULT): 20 s, max HP +65 / 80 %, a blocked target at 160 % / 180 % ATK (× DRE-X), no 异常状态 while it runs; then all back', () => {
+  for (const [tier, elite, mod] of [[5, false, null], [6, true, DREX], [5, true, DREY]]) {
+    const sk = skillOf(tier, elite, S3);
+    const b = sk.bb;
+    assert.deepEqual([sk.duration, b.max_hp, b['lessng_s3[atk_scale].atk_scale'], b.magical_value, sk.skillType], [20, elite ? 0.8 : 0.65, elite ? 1.8 : 1.6, 600, 'MANUAL'], `T${tier}`);
+    const { h, u, w } = blocked({ tier, elite, mod, skill: 2 });
+    assert.equal(u.skill.rule, 'DEFAULT');
+    const unb = h.spawn('enemy_dummy', { pos: [9, 5] });   // on his tile beside the walker: he blocks only one
+    const hp0 = u.hp, max0 = u.s.maxHp;
+    u.skill.gainSp(999);
+    assert.ok(h.runUntil(() => u.skill.active, 3), `T${tier}: cast`);
+    approx(u.skill.timeLeft, 20, `T${tier}: 20 s`, 0.05);
+    approx(u.s.maxHp, max0 * (1 + b.max_hp), `T${tier}: max HP +${b.max_hp * 100} %`);
+    approx(u.hp / u.s.maxHp, hp0 / max0, `T${tier}: ratio kept`);
+    for (const st of ['stun', 'cold', 'freeze', 'sleep', 'silence', 'fear']) assert.equal(h.b.applyStatus(u, st, { duration: 3, source: w }), false, `T${tier}: immune to ${st}`);
+    const scale = mod === DREX ? modOf(tier, DREX).traitOverride.bb.atk_scale : 1;
+    const t0 = h.b.time;
+    h.run(6);
+    const hits = atkHits(h, u).filter((c) => c.t > t0);
+    assert.ok(hits.length >= 3);
+    for (const c of hits) {
+      if (c.target === w) approx(c.amount, u.s.atk * b['lessng_s3[atk_scale].atk_scale'] * scale, `T${tier}: blocked ×${b['lessng_s3[atk_scale].atk_scale']}`);
+      else approx(c.amount, unb.blockedBy ? u.s.atk * b['lessng_s3[atk_scale].atk_scale'] * scale : u.s.atk, `T${tier}: the other target`);
+    }
+    h.runUntil(() => !u.skill.active, 20);
+    h.step();
+    assert.equal(u.findBuff(OATH_KEY), null);
+    approx(u.s.maxHp, max0, `T${tier}: max HP back`);
+    assert.equal(h.b.applyStatus(u, 'stun', { duration: 0.5, source: w }), true, `T${tier}: stuns land again`);
+    done(h);
+  }
+});
+
+test('S3 苦修破誓 cast under a 异常状态: 600 arts to himself first (苦痛专注 applies while he blocks; may knock him out), every 异常状态 cleansed, then the HP; 沉默 does not hold the cast back, 晕眩 does (no attack)', () => {
+  for (const [tier, elite, mod] of [[5, false, null], [6, true, DREX]]) {
+    const cut = 0.35;
+    // cold: he still attacks, the basic strategy casts; he blocks ⇒ 600 × 0.65
+    {
+      const { h, u, w } = blocked({ tier, elite, mod, skill: 2 });
+      h.b.applyStatus(u, 'cold', { duration: 20, source: w });
+      const hp0 = u.hp, max0 = u.s.maxHp;
+      u.skill.gainSp(999);
+      assert.ok(h.runUntil(() => u.skill.active, 5), `T${tier}: cast while cold`);
+      const self = h.hooksOf('damaged').filter((c) => c.source === u && c.target === u);
+      assert.equal(self.length, 1, `T${tier}: one self hit`);
+      assert.deepEqual([self[0].type, Math.round(self[0].amount)], ['arts', Math.round(600 * (1 - cut))], `T${tier}: 600 arts ×0.65`);
+      assert.ok(!u.buffs.some((x) => x.status === 'cold'), `T${tier}: cold cleansed`);
+      approx(u.hp, (hp0 - 600 * (1 - cut)) / max0 * u.s.maxHp, `T${tier}: the HP buff after the damage (ratio of the hurt HP)`);
+      assert.ok(u.findBuff(PAIN_KEY), `T${tier}: 痛楚砺刃 saw it`);
+      done(h);
+    }
+    // 沉默: the engine's basic strategy refuses a silenced cast — this skill "可以无视异常状态开启"
+    {
+      const { h, u } = field({ tier, elite, mod, skill: 2 });
+      h.spawn('enemy_dummy', { pos: [10, 6] });
+      h.b.applyStatus(u, 'silence', { duration: 20, source: null });
+      u.skill.gainSp(999);
+      assert.ok(h.runUntil(() => u.skill.active, 5), `T${tier}: cast while silenced`);
+      assert.equal(h.hooksOf('skillStart').find((c) => c.unit === u)?.reason, 'abnormal');
+      assert.equal(Math.round(h.hooksOf('damaged').find((c) => c.source === u && c.target === u)?.amount), 600, `T${tier}: 600 arts (he blocks nobody)`);
+      assert.ok(!u.s.flags.silence, `T${tier}: silence cleansed`);
+      done(h);
+    }
+    // 晕眩: no attack ⇒ no cast until it ends (then no abnormal state, no self damage)
+    {
+      const { h, u } = field({ tier, elite, mod, skill: 2 });
+      h.spawn('enemy_dummy', { pos: [10, 6] });
+      h.b.applyStatus(u, 'stun', { duration: 3, source: null });
+      u.skill.gainSp(999);
+      h.run(2.5);
+      assert.equal(u.skill.activations, 0, `T${tier}: not while stunned`);
+      assert.ok(h.runUntil(() => u.skill.active, 3), `T${tier}: once the stun ends`);
+      assert.equal(h.hooksOf('damaged').filter((c) => c.source === u && c.target === u).length, 0, `T${tier}: no self damage`);
+      done(h);
+    }
+    // the self damage may knock him out (可致死)
+    {
+      const { h, u } = field({ tier, elite, mod, skill: 2 });
+      h.spawn('enemy_dummy', { pos: [10, 6] });
+      h.b.applyStatus(u, 'cold', { duration: 20, source: null });
+      u.hp = 300;
+      u.skill.gainSp(999);
+      assert.ok(h.runUntil(() => !u.alive, 5), `T${tier}: knocked out by his own 600`);
+      assert.equal(u.findBuff(OATH_KEY), null);
+      done(h);
+    }
+  }
+});
+
+test('DRE-X “沉锋之束”: his attacks ×115 % on a target blocked by anyone (another operator\'s too), ×1 on an unblocked one — stages 1 and 3; none without it', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const { h, u } = field({ tier, elite, mod, skill: 2, others: [{ uid: 2, chessId: 'chess_char_1_02_a', row: 10, col: 6 }] });
+    noSp(h, u);
+    const yak = h.unit(2);
+    const e = h.spawn('enemy_dummy', { pos: [10, 6] });   // blocked by 角峰, on his front tile
+    h.step();
+    assert.equal(e.blockedBy, yak);
+    const x = elite && mod === DREX;
+    if (x) assert.equal(u.def.raw.trait.bb.atk_scale, 1.15, label(f));
+    h.run(6);
+    const hits = atkHits(h, u).filter((c) => c.target === e);
+    assert.ok(hits.length >= 3, label(f));
+    for (const c of hits) approx(c.amount, u.s.atk * (x ? 1.15 : 1), `${label(f)}: ×${x ? 1.15 : 1}`);
+    h.b.releaseBlocked(yak);
+    h.b.retreat(yak);
+    h.step();
+    assert.ok(!e.blockedBy);
+    const t0 = h.b.time;
+    h.run(4);
+    for (const c of atkHits(h, u).filter((y) => y.t > t0)) approx(c.amount, u.s.atk, `${label(f)}: unblocked ×1`);
+    done(h);
+  }
+});
+
+test('DRE-Y “苦修者的抗压训练”: the first lethal hit of a deployment ⇒ max HP ×0.4, ASPD +30, full HP (once; again after a redeploy; not while a 不死 holds him); stage 3: 12 % of DEF ignored on the enemy he blocks', () => {
+  for (const tier of [5, 6]) {
+    const { h, u } = field({ tier, elite: true, mod: DREY });
+    const tb = u.def.raw.trait.bb;
+    assert.deepEqual([tb.attack_speed, tb.max_hp, tb.hp_ratio, tb.value], [30, 0.4, 1, 0.6], `T${tier}: trait bb`);
+    const e = h.spawn('enemy_dummy', { pos: [11, 8] });
+    const max0 = u.s.maxHp, aspd0 = u.s.aspd;
+    h.b.dealDamage(e, u, { amount: 1e7, type: 'true' });
+    assert.ok(u.alive, `T${tier}: not knocked out`);
+    approx(u.s.maxHp, max0 * 0.4, `T${tier}: max HP ×0.4`);
+    approx(u.hp, u.s.maxHp, `T${tier}: full HP of the new max`);
+    assert.equal(u.s.aspd, aspd0 + 30, `T${tier}: ASPD +30`);
+    assert.ok(u.findBuff(REBORN_KEY));
+    h.b.dealDamage(e, u, { amount: 1e7, type: 'true' });
+    assert.ok(!u.alive, `T${tier}: once per deployment`);
+    h.b.redeploy(u);
+    h.step();
+    approx(u.s.maxHp, max0, `T${tier}: a new deployment: max HP back`);
+    h.b.dealDamage(e, u, { amount: 1e7, type: 'true' });
+    assert.ok(u.alive, `T${tier}: again after the redeploy`);
+    done(h);
+    // a running 不死 (坚固维式重锤's window) holds him instead: the module is not used
+    const r = field({ tier, elite: true, mod: DREY });
+    r.u.mem.undyingAt = `${r.u.deploySeq}:0`;
+    r.u.mem.undyingUntil = r.h.b.time + 5;
+    const hammer = r.h.b.on('fatal', (c) => { if (c.unit === r.u && !c.prevented) c.prevented = true; }, { priority: -99 });
+    const f = r.h.spawn('enemy_dummy', { pos: [11, 8] });
+    r.h.b.dealDamage(f, r.u, { amount: 1e7, type: 'true' });
+    assert.ok(r.u.alive && r.u.hp < 2 && !r.u.findBuff(REBORN_KEY), `T${tier}: held by the 不死, the module untouched`);
+    r.h.b.off(hammer);
+    r.u.mem.undyingUntil = 0;
+    r.h.b.dealDamage(f, r.u, { amount: 1e7, type: 'true' });
+    assert.ok(r.u.alive && r.u.findBuff(REBORN_KEY), `T${tier}: the module afterwards`);
+    done(r.h);
+  }
+  // stage 3's hidden part: 无视目标12%的防御力 on the enemy he blocks (none at stage 1, none on an unblocked enemy)
+  for (const tier of [5, 6]) {
+    const ENEMY_DEF = 1000;
+    const h = makeBattle({
+      defs: { enemies: { enemy_walk: enemyRec({ key: 'enemy_walk', hp: 1e9, speed: 0.6, mass: 0, def: ENEMY_DEF }), enemy_dummy: dummy('enemy_dummy', { def: ENEMY_DEF }) } },
+      timeLimit: 600, autoFinish: false, seed: 5, flags: { dpPerSec: 0 }, hooks: ['damaged'], captureNoisy: true,
+      units: [{ uid: 1, diy: { slot: SLOT[tier], charId: LESSNG, skillIndex: 2, uniEquipId: DREY }, elite: true, row: 9, col: 5 }],
+    });
+    h.step();
+    const u = h.unit(1);
+    noSp(h, u);
+    const w = h.spawn('enemy_walk', { routeIndex: 0 });
+    assert.ok(h.runUntil(() => w.blockedBy === u, 30));
+    const t0 = h.b.time;
+    h.run(6);
+    const pen = tier === 6 ? 0.12 : 0;
+    const hits = atkHits(h, u).filter((c) => c.t > t0 && c.target === w);
+    assert.ok(hits.length >= 3);
+    for (const c of hits) approx(c.amount, Math.max(u.s.atk - ENEMY_DEF * (1 - pen), u.s.atk * 0.05), `T${tier}: DEF ×${1 - pen}`);
+    done(h);
+  }
+});
diff --git a/test/content/op_pallas.test.js b/test/content/op_pallas.test.js
new file mode 100644
index 00000000..6a02a6fd
--- /dev/null
+++ b/test/content/op_pallas.test.js
@@ -0,0 +1,324 @@
+// test/content/op_pallas.test.js — the 自选 operator kit of 帕拉斯 (char_485_pallas, 6★ 教官; kit
+// server/sim/content/kits/ops/op-pallas.js), fielded the production way (a DIY slot + its `diy` pick, simdata getDiy) in
+// every form: tiers 5 / 6, normal (E2 Lv1, skill rank 4, no module) and elite (E2 Lv60, rank 7) with no module, INS-X
+// “故乡的山岩” or INS-Y “赫里亚之辉” at stage 1 (tier 5) / 3 (tier 6). Every number is read back from data/backups.json (the
+// form of that slot status); the fidelity checklist of kits/README.md item by item.
+// Run: node --test test/content/op_pallas.test.js
+
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { makeBattle, enemyRec, chessRec, checkInvariants } from '../helpers/battleHarness.js';
+import { KITTED_CHARS, OPERATOR_KITS, KITS } from '../../server/sim/content/kits/index.js';
+import { PEAK_KEY, holderKey } from '../../server/sim/content/kits/ops/op-pallas.js';
+import { diyPool, validateDiyPicks, diyRecord } from '../../shared/diy.js';
+import { positionClass } from '../../server/match/board.js';
+
+const load = (f) => JSON.parse(readFileSync(new URL(`../../data/${f}.json`, import.meta.url), 'utf8'));
+const CHESS = load('chess');
+const BACKUPS = load('backups');
+const PALLAS = 'char_485_pallas';
+const FORMS = BACKUPS.units[PALLAS].forms;
+const SLOT = { 5: 'chess_char_5_diy1_a', 6: 'chess_char_6_diy1_a' };
+const INSX = 'uniequip_002_pallas', INSY = 'uniequip_003_pallas';
+const S1 = 'skchr_pallas_1', S2 = 'skchr_pallas_2', S3 = 'skchr_pallas_3';
+/** The unit form of a slot (tier, normal / elite). */
+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);
+/** A talent of the composed record the unit fights with (module changes applied). */
+const talentOf = (u, i) => u.def.raw.talents.find((t) => t.index === i)?.bb ?? {};
+const approx = (a, b, msg, eps = 1e-6) => assert.ok(Math.abs(a - b) <= eps * Math.max(1, Math.abs(b)), `${msg}: ${a} vs ${b}`);
+const dummy = (key, o = {}) => enemyRec({ key, hp: 1e9, speed: 0, mass: 0, ...o });
+const ENEMIES = { enemy_dummy: dummy('enemy_dummy'), enemy_fly: dummy('enemy_fly', { motion: 'FLY' }), enemy_walk: enemyRec({ key: 'enemy_walk', hp: 1e9, speed: 0.6, mass: 0 }) };
+/** A 米诺斯 operator of no kit (帕拉斯 is the only one of the data): a plain melee record with nationId minos. */
+const MINOS_OP = { ...chessRec({ id: 'test_minos_a', name: '米诺斯测试', stats: { maxHp: 2000, atk: 500, def: 200, blockCnt: 1 }, skill: null }), nationId: 'minos' };
+/** Every 自选 form: [tier, elite, module]. */
+const FORMS_ALL = [[5, false, null], [6, false, null], ...[5, 6].flatMap((t) => [null, INSX, INSY].map((m) => [t, true, m]))];
+
+/** A battle with 帕拉斯 as uid 1 at (row, col) facing RIGHT, plus `others`. */
+function field({ tier = 5, elite = false, mod = null, skill = 2, row = 10, col = 5, others = [], seed = 5, rows = null } = {}) {
+  const h = makeBattle({
+    defs: { enemies: ENEMIES, chess: { test_minos_a: MINOS_OP } }, timeLimit: 600, autoFinish: false, seed,
+    ...(rows ? { stageId: undefined, flat: { rows } } : {}),
+    flags: { dpPerSec: 0, dpMax: 999 }, hooks: ['damaged', 'heal', 'skillStart', 'skillEnd', 'statusApplied'], captureNoisy: true,
+    units: [{ uid: 1, diy: { slot: SLOT[tier], charId: PALLAS, skillIndex: skill, uniEquipId: mod }, elite, row, col }, ...others],
+  });
+  h.step();
+  return { h, u: h.unit(1) };
+}
+const atkHits = (h, u) => h.hooksOf('damaged').filter((c) => c.source === u && c.dmg?.isAttack);
+function done(h) {
+  checkInvariants(h.b);
+  assert.equal(h.b.errors.length, 0, JSON.stringify(h.b.errors[0]));
+}
+const label = ([tier, elite, mod]) => `T${tier} ${elite ? 'elite' : 'normal'} ${mod ?? 'none'}`;
+/** The instructor scale of a form (trait bb atk_scale; INS-X's override). */
+const traitScale = (tier, elite, mod) => (elite && mod ? modOf(tier, mod).traitOverride.bb.atk_scale : formOf(tier, elite).trait.bb.atk_scale);
+
+test('帕拉斯 in every 自选 form: her operator kit (all three skills authored), the form\'s stats + module attributes, 2-2, blocks 2, melee ground-only, 教官 ×1.2 (INS-X ×1.3), 米诺斯, no 特质', () => {
+  assert.equal(OPERATOR_KITS[PALLAS], KITS[PALLAS]);
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    for (const skill of [0, 1, 2]) {
+      const { h, u } = field({ tier, elite, mod, skill });
+      const form = formOf(tier, elite), m = elite ? modOf(tier, mod) : null;
+      assert.deepEqual([u.def.charId, u.def.diyFor, u.skill.id, !!u.kit.generic, u.kit.skillSource], [PALLAS, SLOT[tier], form.skills[skill].skillId, false, 'skills'], label(f));
+      assert.deepEqual([u.base.maxHp, u.base.atk, u.base.def, u.base.aspd],
+        [form.stats.maxHp + (m?.attr.maxHp ?? 0), form.stats.atk + (m?.attr.atk ?? 0), form.stats.def + (m?.attr.def ?? 0), form.stats.aspd + (m?.attr.aspd ?? 0)], `${label(f)}: stats`);
+      assert.deepEqual([u.s.blockCnt, u.profile.attack, u.profile.canHitFly, u.profile.sub, u.base.bat, u.dmgType], [2, 'melee', false, 'instructor', 1.05, 'phys'], `${label(f)}: 教官`);
+      approx(u.profile.unblockedScale, traitScale(tier, elite, mod), `${label(f)}: 教官 scale`);
+      assert.deepEqual(u.liveRangeGrid, form.rangeGrid, `${label(f)}: 2-2`);
+      assert.deepEqual([u.def.bonds, u.def.raw.garrisonIds, u.def.raw.nationId], [['emptyShip'], [], 'minos'], `${label(f)}: bonds / 特质 / nation`);
+      assert.ok(!u.s.flags.liftoff && !u.s.flags.camou && !u.s.flags.stealth, `${label(f)}: ground enemies target her`);
+      done(h);
+    }
+  }
+  // the numbers of the forms (zh_CN): E2 Lv1 1413 / 577 / 382, E2 Lv60 1778 / 650 / 430; INS-X +150 HP +55 ATK → +210 / +83,
+  // trait 130 %; INS-Y +40 ATK +3 ASPD → +60 / +5
+  assert.deepEqual([FORMS['2/1/4/0'].stats.maxHp, FORMS['2/1/4/0'].stats.atk, FORMS['2/1/4/0'].stats.def, FORMS['2/60/7/1'].stats.maxHp, FORMS['2/60/7/1'].stats.atk], [1413, 577, 382, 1778, 650]);
+  assert.deepEqual([modOf(5, INSX).attr, modOf(6, INSX).attr, modOf(5, INSY).attr, modOf(6, INSY).attr], [{ maxHp: 150, atk: 55 }, { maxHp: 210, atk: 83 }, { atk: 40, aspd: 3 }, { atk: 60, aspd: 5 }]);
+  assert.deepEqual([formOf(5, false).trait.bb.atk_scale, modOf(5, INSX).traitOverride.bb.atk_scale, modOf(6, INSY).traitOverride.bb.atk_scale], [1.2, 1.3, 1.2]);
+});
+
+test('a 自选 pick: 帕拉斯 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(PALLAS));
+  for (const t of [5, 6]) assert.ok(diyPool(t, { data, kitted: KITTED_CHARS }).includes(PALLAS), `tier ${t}`);
+  assert.deepEqual(validateDiyPicks({ [SLOT[5]]: { charId: PALLAS, skillIndex: 2, uniEquipId: INSY } }, { data, kitted: KITTED_CHARS }),
+    { ok: true, picks: { [SLOT[5]]: { charId: PALLAS, skillIndex: 2, uniEquipId: INSY } } });
+});
+
+test('trait 教官: her attack ×1.2 (INS-X ×1.3) on an enemy she does not block, ×1 on the one she blocks; flyers are out of her reach', () => {
+  for (const f of [[5, false, null], [5, true, INSX], [6, true, INSX], [6, true, INSY]]) {
+    const [tier, elite, mod] = f;
+    const scale = traitScale(tier, elite, mod);
+    const noSp = (h, u) => h.b.addBuff(u, { key: 'test:noSp', flags: { noSp: true } });   // (阻回: S3 stays off)
+    {
+      const { h, u } = field({ tier, elite, mod, skill: 2 });
+      noSp(h, u);
+      const e = h.spawn('enemy_dummy', { pos: [10, 7] });
+      const fly = h.spawn('enemy_fly', { pos: [10, 6] });
+      h.run(6);
+      const hits = atkHits(h, u);
+      assert.ok(hits.length >= 3, `${label(f)}: she attacks (${hits.length})`);
+      for (const c of hits) {
+        assert.equal(c.target, e, `${label(f)}: only the ground dummy`);
+        approx(c.amount, u.s.atk * scale, `${label(f)}: unblocked ×${scale}`);
+        assert.equal(c.type, 'phys');
+      }
+      assert.ok(!h.hooksOf('damaged').some((c) => c.target === fly), `${label(f)}: no anti-air`);
+      done(h);
+    }
+    {
+      const { h, u } = field({ tier, elite, mod, skill: 2, row: 9 });
+      noSp(h, u);
+      const w = h.spawn('enemy_walk', { routeIndex: 0 });
+      assert.ok(h.runUntil(() => w.blockedBy === u, 30), `${label(f)}: the walker reaches her`);
+      const t0 = h.b.time;
+      h.run(6);
+      const hits = atkHits(h, u).filter((c) => c.t > t0);
+      assert.ok(hits.length >= 3, `${label(f)}: she attacks the enemy she blocks`);
+      for (const c of hits) approx(c.amount, u.s.atk, `${label(f)}: blocked ×1`);
+      done(h);
+    }
+  }
+});
+
+test('T1 英雄的诞生: while she is deployed, every 米诺斯 operator (her too) ATK +25 % above 80 % HP (INS-X stage 3: above 50 %, +30 %) — one 精力充沛, not for others, gone when she leaves', () => {
+  const others = [{ uid: 2, chessId: 'test_minos_a', row: 11, col: 3 }, { uid: 3, chessId: 'chess_char_1_02_a', row: 12, col: 7 }];
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const { h, u } = field({ tier, elite, mod, skill: 2, others });
+    h.step();
+    const minos = h.unit(2), yak = h.unit(3);
+    const t = talentOf(u, 0);
+    const x3 = elite && mod === INSX && tier === 6;
+    assert.deepEqual([t['peak_performance.hp_ratio'], t['peak_performance.atk']], x3 ? [0.5, 0.3] : [0.8, 0.25], `${label(f)}: the talent of the form`);
+    const v = t['peak_performance.atk'], thr = t['peak_performance.hp_ratio'];
+    for (const a of [u, minos]) {
+      assert.deepEqual(a.findBuff(PEAK_KEY)?.mods, { atkPct: v }, `${label(f)}: ${a.name}`);
+      approx(a.s.atk, a.base.atk * (1 + v), `${label(f)}: ${a.name} ATK`);
+    }
+    assert.equal(yak.findBuff(PEAK_KEY), null, `${label(f)}: 角峰 (谢拉格) gets nothing`);
+    // the HP condition, re-read every tick: strictly above hp_ratio
+    minos.hp = minos.s.maxHp * thr;
+    h.step();
+    assert.equal(minos.findBuff(PEAK_KEY), null, `${label(f)}: at ${thr * 100} % HP`);
+    minos.hp = minos.s.maxHp * 0.6;
+    h.step();
+    assert.equal(!!minos.findBuff(PEAK_KEY), x3, `${label(f)}: at 60 % HP`);
+    minos.hp = minos.s.maxHp;
+    h.step();
+    assert.ok(minos.findBuff(PEAK_KEY), `${label(f)}: back above`);
+    h.b.retreat(u);
+    h.step();
+    assert.equal(minos.findBuff(PEAK_KEY), null, `${label(f)}: gone once she leaves the field`);
+    done(h);
+  }
+});
+
+test('T2 女神的振奋: every damage instance she deals heals her and the ally on the tile in front 40 HP (INS-Y stage 3: 60, and every 米诺斯 operator — her too — 40 more), through 禁疗, not a 不成为治疗目标 ally, not the one behind', () => {
+  for (const f of FORMS_ALL) {
+    const [tier, elite, mod] = f;
+    const others = [{ uid: 2, chessId: 'chess_char_1_02_a', row: 10, col: 6 }, { uid: 3, chessId: 'test_minos_a', row: 10, col: 4 }];
+    const { h, u } = field({ tier, elite, mod, skill: 2, others });
+    const front = h.unit(2), behind = h.unit(3);
+    const t = talentOf(u, 1);
+    const y3 = elite && mod === INSY && tier === 6;
+    assert.deepEqual([t.value, t['pallas_e_t_2.value']], y3 ? [60, 40] : [40, undefined], `${label(f)}: the talent of the form`);
+    for (const a of [u, front, behind]) a.hp = a.s.maxHp * 0.5;
+    h.b.addBuff(front, { key: 'test:healFree', flags: { healFree: true } });   // 禁疗: the heal ignores it
+    h.spawn('enemy_dummy', { pos: [10, 7] });
+    h.run(5);
+    const out = h.hooksOf('damaged').filter((c) => c.source === u && c.target.side === 'enemy');
+    assert.ok(out.length >= 3, `${label(f)}: ${out.length} damage instances`);
+    const heals = (a, amount) => h.hooksOf('heal').filter((c) => c.source === u && c.target === a && Math.abs(c.amount - amount) < 1e-6).length;
+    assert.equal(heals(u, t.value), out.length, `${label(f)}: herself ${t.value} per instance`);
+    assert.equal(heals(front, t.value), out.length, `${label(f)}: the ally in front (禁疗 too)`);
+    assert.equal(heals(behind, t.value), 0, `${label(f)}: not the ally behind`);
+    const extra = (a) => h.hooksOf('heal').filter((c) => c.source === u && c.target === a && c.opts?.tags?.includes('module')).length;
+    assert.deepEqual([extra(u), extra(behind), extra(front)], y3 ? [out.length, out.length, 0] : [0, 0, 0], `${label(f)}: the 米诺斯 extra (INS-Y stage 3): her and the 米诺斯 operator behind`);
+    if (y3) assert.ok(h.hooksOf('heal').filter((c) => c.opts?.tags?.includes('module')).every((c) => Math.abs(c.amount - 40) < 1e-6), `${label(f)}: 40 each`);
+    assert.ok(front.hp > front.s.maxHp * 0.5, `${label(f)}: the front ally gained HP`);
+    // 不成为其他角色的治疗目标 (noHeal): not healed
+    const n = h.hooksOf('heal').length;
+    h.b.addBuff(front, { key: 'test:noHeal', flags: { noHeal: true } });
+    const hp = front.hp;
+    h.run(3);
+    assert.equal(front.hp, hp, `${label(f)}: no heal reaches a noHeal ally`);
+    assert.ok(h.hooksOf('heal').length > n, `${label(f)}: she still heals herself`);
+    done(h);
+  }
+});
+
+test('S1 胜利的连击 (AUTO, attack SP 3, data DEFAULT): the next attack strikes twice for 125 % / 145 % ATK, each ×the 教官 scale, and heals twice', () => {
+  for (const [tier, elite, mod] of [[5, false, null], [6, true, INSX], [5, true, INSY]]) {
+    const sk = skillOf(tier, elite, S1);
+    const { h, u } = field({ tier, elite, mod, skill: 0 });
+    assert.deepEqual([u.skill.rule, u.skill.spType, u.skill.spCost, sk.initSp, sk.skillType, sk.bb.atk_scale], ['DEFAULT', 'attack', 3, 0, 'AUTO', elite ? 1.45 : 1.25], `T${tier}`);
+    h.spawn('enemy_dummy', { pos: [10, 7] });
+    assert.ok(h.runUntil(() => u.skill.activations === 1 && atkHits(h, u).some((c) => c.dmg.isSkill), 20), `T${tier}: cast on her 4th attack`);
+    const sk1 = atkHits(h, u).filter((c) => c.dmg.isSkill);
+    const id = sk1[0].dmg.attackId;
+    const strikes = sk1.filter((c) => c.dmg.attackId === id);
+    assert.equal(strikes.length, 2, `T${tier}: two strikes`);
+    for (const c of strikes) approx(c.amount, u.s.atk * sk.bb.atk_scale * traitScale(tier, elite, mod), `T${tier}: ${sk.bb.atk_scale * 100} % × 教官`);
+    assert.equal(atkHits(h, u).filter((c) => c.dmg.attackId < id).length, 3, `T${tier}: after 3 plain attacks`);
+    assert.equal(h.hooksOf('heal').filter((c) => c.source === u && c.target === u).length, atkHits(h, u).length, `T${tier}: one 女神的振奋 per strike`);
+    done(h);
+  }
+});
+
+test('S2 信念的长鞭 (MANUAL, data DEFAULT): 20 / 22 s, range 2-2 + 1 tile forward, ATK +35 / 50 %, each attack 60 / 70 % to stun 0.2 s; all back after', () => {
+  for (const [tier, elite, mod] of [[5, false, null], [6, true, INSY]]) {
+    const sk = skillOf(tier, elite, S2);
+    const { h, u } = field({ tier, elite, mod, skill: 1, seed: 9 });
+    // the data's DEFAULT: tools/build-data.mjs ATTACK_RANGE_CHANGE misses "攻击范围向前延伸一格" (reported, not worked around)
+    assert.deepEqual([u.skill.rule, sk.trigger.rawRule, sk.duration, sk.bb.atk, sk.bb.ability_range_forward_extend, sk.bb['attack@buff_prob'], sk.bb['attack@stun']],
+      ['DEFAULT', 'DEFAULT', elite ? 22 : 20, elite ? 0.5 : 0.35, 1, elite ? 0.7 : 0.6, 0.2], `T${tier}`);
+    const far = h.spawn('enemy_dummy', { pos: [10, 8] });   // 3 tiles ahead: only in the extended range
+    u.skill.gainSp(999);
+    h.run(2);
+    assert.equal(u.skill.activations, 0, `T${tier}: nothing in her own 2-2: no cast (DEFAULT)`);
+    const near = h.spawn('enemy_dummy', { pos: [10, 7] });
+    assert.ok(h.runUntil(() => u.skill.active, 3), `T${tier}: cast on her attack`);
+    approx(u.skill.timeLeft, sk.duration, `T${tier}: ${sk.duration} s`, 0.01);
+    assert.deepEqual(u.liveRangeGrid, [[0, 0], [0, 1], [0, 2], [0, 3]], `T${tier}: one tile more forward`);
+    const v = talentOf(u, 0)['peak_performance.atk'];
+    approx(u.s.atk, u.base.atk * (1 + v + sk.bb.atk), `T${tier}: ATK +${sk.bb.atk * 100} %`);
+    h.b.kill(near, null);
+    const n0 = atkHits(h, u).length;
+    u.skill.extend(300);
+    h.run(150);
+    const hits = atkHits(h, u).slice(n0);
+    assert.ok(hits.length > 100 && hits.every((c) => c.target === far), `T${tier}: the far dummy is hit (${hits.length})`);
+    const stuns = h.hooksOf('statusApplied').filter((c) => c.source === u && c.status === 'stun' && c.target === far);
+    const r = stuns.length / hits.length;
+    assert.ok(Math.abs(r - sk.bb['attack@buff_prob']) < 0.08, `T${tier}: ${stuns.length} / ${hits.length} stuns ≈ ${sk.bb['attack@buff_prob']}`);
+    for (const c of stuns) approx(c.duration, 0.2, `T${tier}: stun 0.2 s`);
+    h.runUntil(() => !u.skill.active, 200);
+    h.step();
+    assert.deepEqual(u.liveRangeGrid, formOf(tier, elite).rangeGrid, `T${tier}: back to 2-2`);
+    approx(u.s.atk, u.base.atk * (1 + v), `T${tier}: ATK back`);
+    done(h);
+  }
+});
+
+test('S3 英勇的祝福 (MANUAL, data DEFAULT): 30 s, ATK +55 / 70 %, three targets; the operator on the low-ground tile in front holds 精力充沛 +35 / 40 % (> 80 % HP), DEF +20 / 25 %, block +1 — else she does, and it moves on deploy / retreat', () => {
+  for (const [tier, elite, mod] of [[5, false, null], [6, true, INSX], [6, true, INSY]]) {
+    const sk = skillOf(tier, elite, S3);
+    const b = sk.bb;
+    assert.deepEqual([sk.duration, b.atk, b['attack@max_target'], b['attack@peak_performance.atk'], b['attack@peak_performance.hp_ratio'], b['attack@def'], b['attack@block_cnt']],
+      [30, elite ? 0.7 : 0.55, 3, elite ? 0.4 : 0.35, 0.8, elite ? 0.25 : 0.2, 1], `T${tier}`);
+    const v1 = (u) => talentOf(u, 0)['peak_performance.atk'];
+    // (a) 角峰 (an operator on a road tile) in front: it holds
+    {
+      const { h, u } = field({ tier, elite, mod, skill: 2, others: [{ uid: 2, chessId: 'chess_char_1_02_a', row: 10, col: 6 }] });
+      const yak = h.unit(2);
+      assert.equal(u.skill.rule, 'DEFAULT', `T${tier}: data DEFAULT`);
+      for (const pos of [[10, 5], [10, 6], [10, 7]]) h.spawn('enemy_dummy', { pos });   // three enemies on her 2-2
+      u.skill.gainSp(999);
+      assert.ok(h.runUntil(() => u.skill.active, 3), `T${tier}: cast`);
+      h.step();
+      approx(u.skill.timeLeft, 30, `T${tier}: 30 s`, 0.1);
+      assert.deepEqual(yak.findBuff(holderKey(u))?.mods, { defPct: b['attack@def'], blockCnt: 1 }, `T${tier}: 角峰 holds`);
+      assert.equal(yak.s.blockCnt, yak.base.blockCnt + 1, `T${tier}: 角峰 block +1`);
+      approx(yak.s.def, yak.base.def * (1 + b['attack@def']), `T${tier}: 角峰 DEF`);
+      assert.deepEqual(yak.findBuff(PEAK_KEY)?.mods, { atkPct: b['attack@peak_performance.atk'] }, `T${tier}: 角峰 精力充沛`);
+      assert.equal(u.findBuff(holderKey(u)), null, `T${tier}: not her`);
+      assert.equal(u.s.blockCnt, 2);
+      approx(u.s.atk, u.base.atk * (1 + v1(u) + b.atk), `T${tier}: her ATK +${b.atk * 100} % (+ her own T1)`);
+      yak.hp = yak.s.maxHp * 0.8;
+      h.step();
+      assert.equal(yak.findBuff(PEAK_KEY), null, `T${tier}: 角峰 at 80 % HP: no 精力充沛`);
+      // three targets per attack
+      const t0 = h.b.time;
+      h.run(4);
+      const per = new Map();
+      for (const c of atkHits(h, u).filter((x) => x.t > t0)) per.set(c.dmg.attackId, (per.get(c.dmg.attackId) ?? new Set()).add(c.target));
+      assert.ok(per.size >= 2 && [...per.values()].every((s) => s.size === 3), `T${tier}: three targets per attack`);
+      // 角峰 leaves ⇒ she holds at once (同类取最高: her 精力充沛 is the higher of T1 and S3); a new operator in front takes it back
+      h.b.retreat(yak);
+      h.step();
+      assert.deepEqual(u.findBuff(holderKey(u))?.mods, { defPct: b['attack@def'], blockCnt: 1 }, `T${tier}: passed to her`);
+      assert.equal(u.s.blockCnt, 3, `T${tier}: her block +1`);
+      assert.deepEqual(u.findBuff(PEAK_KEY)?.mods, { atkPct: Math.max(v1(u), b['attack@peak_performance.atk']) }, `T${tier}: one 精力充沛, the highest`);
+      approx(u.s.atk, u.base.atk * (1 + b.atk + Math.max(v1(u), b['attack@peak_performance.atk'])), `T${tier}: her ATK`);
+      h.b.redeploy(yak, { free: true });
+      h.step();
+      assert.ok(yak.findBuff(holderKey(u)) && !u.findBuff(holderKey(u)), `T${tier}: back to the redeployed 角峰`);
+      h.runUntil(() => !u.skill.active, 40);
+      h.step();
+      assert.ok(!yak.findBuff(holderKey(u)) && !u.findBuff(holderKey(u)) && yak.s.blockCnt === yak.base.blockCnt, `T${tier}: gone at the end`);
+      assert.deepEqual(u.findBuff(PEAK_KEY)?.mods, { atkPct: v1(u) }, `T${tier}: her T1 only`);
+      done(h);
+    }
+    // (b) the tile in front is high ground (a ranged operator on it): she holds (the empty tile: (a) after the retreat)
+    {
+      const rows = { 10: '##hrrrhrrrfrrrrrrrf##' };   // (10,6) = 高台 'h'
+      const { h, u } = field({ tier, elite, mod, skill: 2, rows, others: [{ uid: 2, chessId: 'chess_char_1_01_a', row: 10, col: 6 }] });
+      const sniper = h.unit(2);
+      assert.equal(h.b.grid.isLow(10, 6), false);
+      h.spawn('enemy_dummy', { pos: [10, 7] });
+      u.skill.gainSp(999);
+      assert.ok(h.runUntil(() => u.skill.active, 3));
+      h.step();
+      assert.ok(u.findBuff(holderKey(u)) && !sniper.findBuff(holderKey(u)), `T${tier}: an operator on a 高台 in front does not hold it`);
+      done(h);
+    }
+  }
+});
+
+test('INS-Y 「可以额外部署在远程位」: the data carries it (hidden buildable_type 2); a placement rule of the prep, not of the battle — a 帕拉斯 piece stays on melee tiles (owner\'s decision of 2026-10-04, shared/highGround.js)', () => {
+  for (const tier of [5, 6]) {
+    const m = modOf(tier, INSY);
+    assert.equal(m.traitOverride.moduleDesc, '可以额外部署在远程位');
+    assert.deepEqual(m.talentChanges.find((t) => t.talentIndex === -1)?.bb, { buildable_type: 2 });
+    const rec = diyRecord(SLOT[tier], { charId: PALLAS, skillIndex: 0, uniEquipId: INSY }, { elite: true, data: { chess: CHESS, backups: BACKUPS } });
+    assert.equal(positionClass(rec, INSY), 'melee', `T${tier}: placement unchanged`);
+    const { h, u } = field({ tier, elite: true, mod: INSY, skill: 2 });
+    assert.equal(u.def.position, 'MELEE');
+    done(h);
+  }
+});
diff --git a/test/golden/diy.json b/test/golden/diy.json
index 18f82dca..fdacc443 100644
--- a/test/golden/diy.json
+++ b/test/golden/diy.json
@@ -2427,8 +2427,8 @@
       "snaps": "5c632459 14793cab 77a534f8 70d4b39c f84a4105 c2e2b2dc 8596dd2c b7677642 156f5786 2138d829 1cf66223 b3ece3cb 12c6f876 bc62e21b 121a2081 3e5bd85f 09aec046 1e39e676 f98840f6 b64b7602 d2ef96e7 a0415358 32a50205"
     },
     "diy-060": {
-      "about": "5_diy1_a=cdfend 5_diy2_b=cdfend 5_diy1_a=cguard 5_diy2_b=cguard 5_diy1_a=csnipe 5_diy2_b=csnipe 5_diy1_a=ccast 5_diy2_b=ccast 5_diy1_a=cmedic 5_diy2_b=cmedic 5_diy1_a=csuppo 5_diy2_b=csuppo",
-      "fast": true,
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