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_5_04-bldsk.js

@@ -0,0 +1,59 @@
+// server/sim/content/kits/ops/chess_char_5_04-bldsk.js — 华法琳 (char_171_bldsk) kit, tier 5 (hidden).
+// Conventions of the tier-5 kits: ../shared/tier5.js; kit contract and rules: ../README.md.
+
+import { HALF_HP, NEVER, num, on, inRange, talent, traitBb, lowHpHealUp } from '../shared/tier5.js';
+
+export default {
+  // ---------------------------------------------------------------------------------------------------------------
+  // 华法琳 — S1 紧急包扎 (charges, attack SP): the next heal on a target below half HP adds hp_ratio × its max HP.
+  // T1 血液样本回收: an enemy dying in range → +2 SP to herself and to a random ally in range.
+  // Module (elite): heals on allies below 50 % ×1.15.
+  chess_char_5_04_a: (bb, chess) => {
+    const t0 = talent(chess, 0), tb = traitBb(chess);
+    const ratio = num(bb.hp_ratio);
+    return {
+      skill: {
+        kind: 'charges', heal: true, trigger: NEVER,
+        onStart({ unit }) { unit.mem.bldskBonus = unit.mem.bldskTarget ?? null; },
+      },
+      talents: [{ install(battle, unit) { // 血液样本回收
+        battle.on('kill', (c) => {
+          const v = c.victim;
+          if (v.side !== 'enemy' || !on(unit) || !inRange(unit, v)) return;
+          unit.skill?.gainSp(num(t0['bldsk_t_1[self].sp']), 'talent');
+          const others = battle.alliesInGrid(unit).filter((a) => a !== unit && a.skill && !a.skill.noSkill && a.skill.kind !== 'passive');
+          const pick = battle.rng.pick(others);
+          if (pick) pick.skill.gainSp(num(t0['bldsk_t_1[rand].sp']), 'talent');
+        }, { owner: unit });
+      } }],
+      install(battle, unit) {
+        // the skill only fires for a heal target below half HP: checked right before the heal
+        battle.on('beforeAttack', (c) => {
+          if (c.attacker !== unit) return;
+          unit.mem.bldskNoSp = false;
+          const sk = unit.skill;
+          if (!sk || !sk.ready || unit.s.flags.silence) return;
+          const t = c.targets[0];
+          if (!t || t.side !== 'ally' || !(t.hpRatio < HALF_HP)) return;
+          unit.mem.bldskTarget = t;
+          // the heal made by the skill recovers no attack SP (engine rule for skill attacks: cost N ⇒ every N+1 heals)
+          if (sk.activate('DEFAULT')) unit.mem.bldskNoSp = true;
+          unit.mem.bldskTarget = null;
+        }, { owner: unit });
+        battle.on('spGain', (c) => {
+          if (c.unit !== unit || c.reason !== 'attack' || !unit.mem.bldskNoSp) return;
+          unit.mem.bldskNoSp = false;
+          c.amount = 0;
+        }, { owner: unit, priority: 100 });
+        battle.on('heal', (c) => { // merged into the same heal
+          if (c.source !== unit || !unit.mem.bldskBonus || c.target !== unit.mem.bldskBonus) return;
+          unit.mem.bldskBonus = null;
+          // the bonus is part of the same heal: the healer's and the target's healing multipliers apply to it too
+          c.amount += c.target.s.maxHp * ratio * num(unit.s.healingDealtMul, 1) * num(c.target.s.healingTakenMul, 1);
+          battle.fx('healAoe', { x: c.target.x, y: c.target.y, id: c.target.id, r: 0.5 });
+        }, { owner: unit, priority: 10 });
+        lowHpHealUp(battle, unit, tb);
+      },
+    };
+  },
+};