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_1_02-yak.js

@@ -0,0 +1,19 @@
+// server/sim/content/kits/ops/chess_char_1_02-yak.js — 角峰 (char_199_yak) kit, tier 1.
+// Conventions of the tier-1 kits: ../shared/tier1.js; kit contract and rules: ../README.md.
+
+import { num, talentBb, statBuff, skillBbOf } from '../shared/tier1.js';
+
+export default {
+  // ---------------------------------------------------------------------------------------------------------------
+  // 1_02 角峰 抗寒体质: HP +max_hp, DEF +def, RES ×(1+magic_resistance). 雪原卫士: RES +magic_resistance (flat).
+  // Alternate S1 体能强化 (重装 ⇒ TAKE_DAMAGE trigger from data): HP +max_hp, +hp_recovery_per_sec HP per second
+  // (the 生命回复速度 attribute). Elite module PRO-Y (block 4) is a stat of the module (attr blockCnt).
+  chess_char_1_02_a: (bb, chess) => {
+    const s1 = skillBbOf(chess, 'skchr_yak_1');
+    return {
+      skill: { kind: 'duration', mods: { hpPct: num(bb.max_hp), defPct: num(bb.def), resMul: 1 + num(bb.magic_resistance) } },
+      skills: { skchr_yak_1: { kind: 'duration', mods: { hpPct: num(s1.max_hp), hpRegen: num(s1.hp_recovery_per_sec) } } },
+      talents: [{ install(battle, unit) { statBuff(battle, unit, 'talent:yak', { resFlat: num(talentBb(chess, 0).magic_resistance) }); } }],
+    };
+  },
+};