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_2_18-ashlok.js

@@ -0,0 +1,37 @@
+// server/sim/content/kits/ops/chess_char_2_18-ashlok.js — 灰毫 (char_431_ashlok) kit, tier 2.
+// Conventions of the tier-2 kits: ../shared/tier2.js; kit contract and rules: ../README.md.
+
+import { num, talentBb, traitBb, onHitBy, batMod } from '../shared/tier1.js';
+
+export default {
+  // ---------------------------------------------------------------------------------------------------------------
+  // 2_18 灰毫 攻击力强化·γ型 (DEFAULT, like S2: the owner's deliberate deviation from the 重装 TAKE_DAMAGE row, data
+  // TRIGGER_DEVIATIONS, DESIGN §21.29): ATK +atk. 炮术研习: ATK +atk, or +ashlok_t_1.atk when the `cnt` orthogonal
+  // tiles around her are all ground (LOW). Elite module (FOR-X, trait atk_scale): vs blocked enemies ATK ×atk_scale.
+  // S2 专注轰击 (alt): block count 0 (noBlock: releases what she holds), only ranged (splash) attacks, base attack time
+  // +base_attack_time s (−0.4 / −0.5 on 2.8), ATK +atk.
+  chess_char_2_18_a: (bb, chess) => {
+    const t = talentBb(chess, 0);
+    const tb = traitBb(chess);
+    return {
+      skill: { kind: 'duration', mods: { atkPct: num(bb.atk) } },
+      skills: {
+        skchr_ashlok_2: {
+          kind: 'duration', mods: { atkPct: num(bb.atk), batPct: batMod(bb.base_attack_time, chess) }, flags: { noBlock: true },
+          attack: { fortress: false, _fortressMelee: false },
+        },
+      },
+      talents: [{ install(battle, unit) {
+        battle.on('deploy', ({ unit: u }) => {
+          if (u !== unit) return;
+          const r = unit.tileR, c = unit.tileC;
+          const low = [[1, 0], [-1, 0], [0, 1], [0, -1]].filter(([dr, dc]) => battle.grid.isLow(r + dr, c + dc)).length;
+          const ground = low >= num(t.cnt, 4);
+          const v = ground ? num(t['ashlok_t_1.atk'], num(t.atk)) : num(t.atk);
+          if (v) battle.addBuff(unit, { key: 'talent:ashlok', mods: { atkPct: v }, data: { ground }, tags: ['talent'] });
+        }, { owner: unit });
+        if (num(tb.atk_scale, 1) !== 1) onHitBy(battle, unit, ({ target, dmg }) => { if (dmg.isAttack && target.blockedBy) dmg.amount *= num(tb.atk_scale, 1); });
+      } }],
+    };
+  },
+};