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_17-hsguma.js

@@ -0,0 +1,50 @@
+// server/sim/content/kits/ops/chess_char_4_17-hsguma.js — 星熊 (char_136_hsguma) kit, tier 4.
+// Conventions of the tier-4 kits: ../shared/tier4.js; kit contract and rules: ../README.md.
+
+import { AURA, num, tbb, whileDeployed, pulse, toggleBuff, isSel, alt, withDefaults } from '../shared/tier4.js';
+
+export default withDefaults({
+  // ===== 星熊 (protector) S2 荆棘 (passive) — DEF +13 %, counters every attacker for 65 % ATK phys; talents
+  //       S1 战意 (TAKE_DAMAGE: DEF/ATK up); S3 力之锯 (ATK/DEF up, cuts every enemy on her front tile — all enemies of her
+  //       range); module PRO-X (护身符): DEF +20 % while blocking
+  chess_char_4_17_a: (bb, chess, def) => {
+    const t0 = tbb(def, 0), t1 = tbb(def, 1);
+    const tb = def.traitBb || {};
+    const S2 = isSel(def, 'skchr_hsguma_2');
+    return {
+      skills: alt(def, {
+        skchr_hsguma_1: () => ({ kind: 'duration', mods: { defPct: num(bb.def), atkPct: num(bb.atk) } }),
+        skchr_hsguma_3: () => ({
+          kind: 'duration',
+          mods: { atkPct: num(bb.atk), defPct: num(bb.def) },
+          targeting: { allInRange: true },
+          onStart({ battle, unit }) { battle.fx('overclock', { x: unit.x, y: unit.y, id: unit.id }); },
+        }),
+      }),
+      skill: { kind: 'passive', mods: { defPct: num(bb.def) } },
+      talents: [
+        { install(battle, unit) { // 战术装甲: 25 % 伤害抵挡 — negates an enemy phys/arts damage instance ("抵挡一次物理或法术伤害")
+          battle.on('hit', (c) => { // 抵挡 is target-side: a 无来源 burst (source null) counts via the enemy credited with it
+            const src = c.source || c.credit;
+            if (c.target !== unit || !src || src.side !== 'enemy' || c.dmg.cancel || (c.dmg.type !== 'phys' && c.dmg.type !== 'arts')) return;
+            if (battle.rng.chance(num(t0.prob, 0.25))) { c.dmg.cancel = true; battle.fx('block', { x: unit.x, y: unit.y, id: unit.id }); }
+          }, { owner: unit });
+        } },
+        { install(battle, unit) { // 特种作战策略: 重装 allies DEF +6 %
+          whileDeployed(battle, unit, AURA, () => { for (const a of battle.allies(unit.ownerId)) if (a.def?.profession === 'TANK') pulse(battle, a, 'hsguma:def', { defPct: num(t1.def, 0.06) }); });
+        } },
+      ],
+      install(battle, unit) {
+        const bd = num(tb.def, 0); // module PRO-X: 阻挡敌人时防御力+20%
+        if (bd) whileDeployed(battle, unit, 0.1, () => toggleBuff(battle, unit, 'hsguma:module', unit.blocking.length > 0, { defPct: bd }));
+        if (!S2) return;
+        battle.on('damaged', (c) => {
+          const src = c.source;
+          if (c.target !== unit || !unit.alive || !src || src.side !== 'enemy' || !src.alive || !c.dmg?.isAttack) return;
+          battle.dealDamage(unit, src, { amount: unit.s.atk * num(bb.atk_scale, 0.65), type: 'phys', canDodge: false, isSkill: true, tags: ['counter'] });
+          battle.fx('thorns', { x: unit.x, y: unit.y, id: unit.id });
+        }, { owner: unit });
+      },
+    };
+  },
+});