feedback5 R4: one file per operator kit — kits/tier1..6.js split into kits/ops/<chessId>-<codename>.js (129 kits), kits/shared/tier1..6.js (the helpers two or more kits of a tier use, and each tier's header notes) and kits/index.js (the registry, same keys in the same order); the tier files become re-export shims

Pure move: every line of a kit, of a helper and of the tier headers is copied verbatim (only the headers' first
line names the new file); a helper used by one kit moved into that kit's file. Glue only: the generated imports,
`export default { … }` around each registry entry, `export { … }` lists in shared/tier2..6.js, and tier4's
`(bb, chess, def)` default-argument wrapper as shared/tier4.js `withDefaults` (applied in each tier-4 kit file).
kits/index.js loads every kit file with a guarded dynamic import (browser-safe, no directory listing); tierN.js
re-export the tier registry (TIER_KITS) and their old named exports (tier1 helpers + tinmanKit, tier6
PITHST_ELEMENTS). The merged registry, every tier default and named export have the same keys, order, frozenness
and function sources as before. test/docs-consistency.test.js reads the moved code at its new paths.
Golden: GOLDEN_FULL=1 node --test test/golden.test.js unchanged.

server/sim/content/kits/ops/chess_char_3_12-blemsh.js

@@ -0,0 +1,127 @@
+// server/sim/content/kits/ops/chess_char_3_12-blemsh.js — 瑕光 (char_423_blemsh) kit, tier 3.
+// Conventions of the tier-3 kits: ../shared/tier3.js; kit contract and rules: ../README.md.
+
+import { bodyOnTile } from '../../../body.js';
+import {
+  num, defOf, talentBb, traitBb, altSkills, instantKindOf, alive, onTiles, gridKeys, fx, copyGrid, NINE, isLeader,
+  giveSp,
+} from '../shared/tier3.js';
+
+export default {
+  // ---- 3_12 瑕光 · 守护者 — S3 先贤化身: ATK/DEF +, bonus arts per hit, heals another nearby ally per attack;
+  //      剑盾骑士: hurt-SP skills of the team also gain SP on attack; 仁慈: attacks sleeping enemies (first, ×atk_scale);
+  //      精锐 module GUA-Y: damage taken −15 %
+  //      S1 光芒涌动 (自动触发 ⇒ DEFAULT, charges): next attack ×atk_scale phys + heals the most injured ally of the 3×3 (herself
+  //      included) for heal_scale × ATK; S2 慑敌辉光: ATK +, puts every ground enemy on her own tile and every enemy she
+  //      blocks to sleep (PRTS 备注; for the skill's duration: no own value in the data) and heals every ally of the
+  //      skill range by ATK × ratio each second;
+  //      精锐 module GUA-X: her heals on allies under hp_ratio HP × heal_scale
+  chess_char_3_12_a: (bb, chess, def) => {
+    const d = defOf(chess, def);
+    const t0 = talentBb(d, 0), t1 = talentBb(d, 1);
+    const tb = traitBb(d);
+    const bonus = num(bb['attack@blemsh_s_3_extra_dmg[magic].atk_scale'], 0);
+    const heal = num(bb.heal_scale, 0);
+    const healGrid = copyGrid(d.skill?.rangeGrid) ?? NINE;
+    const mercy = num(t1.atk_scale, 1);
+    const sleepersInRange = (battle, unit) => {
+      const set = unit.rangeKeySet;
+      return set ? battle.enemies.filter((e) => e.alive && !e.hidden && e.s.flags.sleep && !e.s.flags.untargetable && !e.isFlying && onTiles(e, set)) : [];
+    };
+    const kit = {
+      trait: { hitSleep: true }, // 仁慈: 自身可以攻击…沉睡的目标 (沉睡 = 无敌 for everyone else)
+      skill: {
+        kind: 'duration',
+        mods: { atkPct: num(bb.atk), defPct: num(bb.def) },
+        heal: false,
+        attack: { onHit({ battle, unit, target }) {
+          if (bonus > 0 && target && target.alive) battle.dealDamage(unit, target, { amount: unit.s.atk * bonus, type: 'arts', isSkill: true, tags: ['skill', 'blemshBonus'] });
+        } },
+        onAttack({ battle, unit }) {
+          if (!(heal > 0)) return;
+          const ally = battle.injuredAlliesInKeys(new Set(gridKeys(healGrid, unit)), unit).find((a) => a !== unit);
+          if (ally) battle.heal(unit, ally, unit.s.atk * heal);
+        },
+      },
+      skills: altSkills(chess, d, bb, {
+        skchr_blemsh_1: (s) => {
+          const grid = copyGrid(s.rangeGrid) ?? NINE;
+          const hs = num(s.bb.heal_scale, 0);
+          return {
+            kind: instantKindOf(s),
+            heal: false,
+            attack: {
+              atkScale: num(s.bb.atk_scale, 1),
+              onHit({ battle, unit }) { // "恢复周围一名友方单位"
+                const ally = hs > 0 ? battle.injuredAlliesInKeys(new Set(gridKeys(grid, unit)), unit)[0] : null;
+                if (ally) battle.heal(unit, ally, unit.s.atk * hs);
+              },
+            },
+          };
+        },
+        skchr_blemsh_2: (s) => {
+          const grid = copyGrid(s.rangeGrid) ?? NINE;
+          const ratio = num(s.bb['attack@atk_to_hp_recovery_ratio'], num(s.bb.atk_to_hp_recovery_ratio, 0));
+          return {
+            kind: 'duration',
+            heal: false,
+            mods: { atkPct: num(s.bb.atk) },
+            onStart({ battle, unit, skill }) {
+              const dur = skill.timeLeft > 0 ? skill.timeLeft : Math.max(0.1, num(s.duration, 10));
+              let n = 0;
+              // PRTS 备注: "技能生效对象实际为“自身这格内的所有地面敌人及自身阻挡的敌人”，即使阻挡的是飞行敌人" — a blocked
+              // enemy stands at the block radius, outside her tile (Battle._checkBlock)
+              for (const e of battle.enemies) {
+                if (!e.alive || e.hidden) continue;
+                if (e.blockedBy !== unit && (e.isFlying || !bodyOnTile(e, unit.tileR, unit.tileC))) continue;
+                if (battle.applyStatus(e, 'sleep', { duration: dur, source: unit })) n++;
+              }
+              fx(battle, 'aoe', unit, { radius: 0.5, skill: 'blemsh_2', status: 'sleep', n });
+              unit.mem.blemshRegen = 0;
+            },
+            onTick({ battle, unit, dt }) { // "周围的所有友方单位每秒恢复相当于攻击力N%的生命值"
+              if (!(ratio > 0)) return;
+              unit.mem.blemshRegen = (unit.mem.blemshRegen ?? 0) + dt;
+              while (unit.mem.blemshRegen >= 1 - 1e-9) {
+                unit.mem.blemshRegen -= 1;
+                for (const a of battle.injuredAlliesInKeys(new Set(gridKeys(grid, unit)), unit)) battle.heal(unit, a, unit.s.atk * ratio);
+              }
+            },
+          };
+        },
+      }),
+      talents: [
+        { install(battle, unit) {
+          unit.mem.blemshKnight = true;
+          battle.on('attack', (ctx) => {
+            const a = ctx.attacker;
+            if (!a || a.kind !== 'op' || a.ownerId !== unit.ownerId || a.skill?.spType !== 'hurt') return;
+            if (!alive(unit) || !isLeader(battle, unit, 'blemshKnight')) return;
+            giveSp(a, num(t0.sp, 1), 'talent');
+          }, { owner: unit });
+        } },
+        { install(battle, unit) {
+          battle.on('beforeAttack', (ctx) => {
+            if (ctx.attacker !== unit) return;
+            const s = sleepersInRange(battle, unit);
+            if (s.length) ctx.targets = [s[0], ...ctx.targets.filter((t) => t !== s[0])].slice(0, Math.max(1, ctx.targets.length));
+          }, { owner: unit });
+          battle.on('hit', (ctx) => {
+            if (ctx.source === unit && ctx.target.side === 'enemy' && ctx.target.s.flags.sleep) ctx.dmg.mul *= mercy;
+          }, { owner: unit });
+          // (a lone sleeper is found by the engine's own target search: `trait.hitSleep` makes sleepers targetable
+          // and damageable for her only)
+        } },
+      ],
+    };
+    if (num(tb.damage_resistance) > 0) {
+      kit.install = (battle, unit) => battle.addBuff(unit, { key: 'trait:blemsh_guard', mods: { dmgTakenMul: 1 - num(tb.damage_resistance) }, persist: true, allowDead: true });
+    } else if (num(tb.heal_scale) > 0) {
+      // GUA-X "治疗生命值低于50%的友方单位时治疗量提升15%" (the HP before the heal)
+      kit.install = (battle, unit) => battle.on('heal', (ctx) => {
+        if (ctx.source === unit && ctx.target && ctx.target.hpRatio < num(tb.hp_ratio, 0.5)) ctx.amount *= num(tb.heal_scale, 1);
+      }, { owner: unit });
+    }
+    return kit;
+  },
+};