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_4_22-svrash.js

@@ -0,0 +1,52 @@
+// server/sim/content/kits/ops/chess_char_4_22-svrash.js — 银灰 (char_172_svrash) kit, tier 4.
+// Conventions of the tier-4 kits: ../shared/tier4.js; kit contract and rules: ../README.md.
+
+import {
+  AURA, num, tbb, grid, enemiesOnRange, whileDeployed, reveal, alt, instantKind, withDefaults,
+} from '../shared/tier4.js';
+
+export default withDefaults({
+  // ===== 银灰 (lord) S3 真银斩 — DEF −70 %, ATK +125 %, wider range, ≤ 4 targets at melee scale; 领袖 / 鹰眼视觉; module
+  //       S1 强力击·γ型 (attack SP: next attack 205 %/225 %); S2 雪境生存法则 (toggle — [ASSUMED] once switched on it stays
+  //       on for the deployment: smaller range, DEF up, 3.5 %/4 % max HP regen per s)
+  chess_char_4_22_a: (bb, chess, def) => {
+    const t0 = tbb(def, 0);
+    const tb = def.traitBb || {};
+    const g = grid(def.skill?.rangeGrid);
+    return {
+      skills: alt(def, {
+        skchr_svrash_1: () => ({ kind: instantKind(def), attack: { atkScale: num(bb.atk_scale, 2.05) } }),
+        skchr_svrash_2: () => ({
+          kind: 'toggle',
+          mods: { defPct: num(bb.def), hpRegenRatio: num(bb.hp_recovery_per_sec_by_max_hp_ratio) },
+          targeting: g ? { rangeGrid: g } : undefined,
+          onStart({ battle, unit }) { battle.fx('snow', { x: unit.x, y: unit.y, id: unit.id }); },
+        }),
+      }),
+      skill: {
+        kind: 'duration',
+        mods: { defPct: num(bb.def), atkPct: num(bb.atk) },
+        targeting: { ...(g ? { rangeGrid: g } : {}), maxTargets: Math.max(1, Math.floor(num(bb['attack@max_target'], 4))) },
+        attack: { projectile: 'none', dmgMul: () => 1 },       // 视为近距离攻击: no ranged ×0.8
+        onStart({ battle, unit }) { battle.fx('truesilver', { x: unit.x, y: unit.y, id: unit.id }); },
+        onAttack({ battle, unit }) { battle.fx('slash', { x: unit.x, y: unit.y, id: unit.id }); },
+      },
+      talents: [
+        { install(battle, unit) { // 领袖: ATK +10 %; every unit of the team redeploys 10 % faster
+          battle.addBuff(unit, { key: 'svrash:t1', mods: { atkPct: num(t0.atk, 0.1) }, persist: true, allowDead: true });
+          const p = battle.getPlayer(unit.ownerId);
+          for (const a of p ? p.units : []) if (a.kind === 'op') battle.addBuff(a, { key: 'svrash:leader', mods: { redeployMul: Math.max(0, 1 + num(t0.respawn_time, -0.1)) }, persist: true, allowDead: true });
+        } },
+        { install(battle, unit) { whileDeployed(battle, unit, AURA, () => reveal(battle, enemiesOnRange(battle, unit))); } }, // 鹰眼视觉
+      ],
+      install(battle, unit) {
+        const m = num(tb.atk_scale_m, 0); // module (elite): attacks add 10 % ATK arts damage
+        if (!(m > 0)) return;
+        battle.on('damaged', (c) => {
+          if (c.source !== unit || !c.dmg?.isAttack || c.type !== 'phys' || !c.target.alive || c.target.side !== 'enemy') return;
+          battle.dealDamage(unit, c.target, { amount: unit.s.atk * m, type: 'arts', tags: ['module'] });
+        }, { owner: unit });
+      },
+    };
+  },
+});