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_10-rockr.js

@@ -0,0 +1,68 @@
+// server/sim/content/kits/ops/chess_char_2_10-rockr.js — 洛洛 (char_4040_rockr) kit, tier 2.
+// Conventions of the tier-2 kits: ../shared/tier2.js; kit contract and rules: ../README.md.
+
+import { canTargetEnemy } from '../../../targeting.js';
+import { bodyInKeys } from '../../../body.js';
+import { num, talentBb, up } from '../shared/tier1.js';
+import { onDefaultSkill } from '../shared/tier2.js';
+
+export default {
+  // ---------------------------------------------------------------------------------------------------------------
+  // 2_10 洛洛 自负此轭: ASPD +attack_speed; the drones lock on their target until it dies or the skill ends.
+  // 过载 (term ba.overdrive "技能进行到一半时触发额外效果"): the second half of the duration — ATK +atk and the funnel cap
+  // ×scale; when the skill ends she is stunned as long as the overload lasted. 立于磐石: ATK +atk per `interval` s on the
+  // field, up to max_stack_cnt stacks.
+  // S1 战术咏唱·γ型 (alt): ASPD +attack_speed; the target lock belongs to 自负此轭 only.
+  chess_char_2_10_a: (bb, chess) => {
+    const t = talentBb(chess, 0);
+    const s2 = onDefaultSkill(chess);
+    const endOverload = (battle, unit) => {
+      if (unit.mem.rockFunnel) { unit.profile.funnel = unit.mem.rockFunnel; unit.mem.rockFunnel = null; }
+      battle.removeBuff(unit, 'rockr:overload');
+    };
+    return {
+      skill: {
+        kind: 'duration', mods: { aspd: num(bb.attack_speed) },
+        onStart({ battle, unit, skill }) {
+          unit.mem.rockOverAt = battle.time + skill.duration / 2;
+          unit.mem.rockOver = false;
+          unit.mem.rockLock = null;
+        },
+        onTick({ battle, unit }) {
+          if (unit.mem.rockOver || battle.time + 1e-9 < unit.mem.rockOverAt) return;
+          unit.mem.rockOver = true;
+          const f = unit.profile.funnel;
+          if (f) { unit.mem.rockFunnel = f; unit.profile.funnel = { ...f, max: f.max * num(bb.scale, 1) }; }
+          battle.addBuff(unit, { key: 'rockr:overload', mods: { atkPct: num(bb.atk) }, visible: true, tags: ['skill'] });
+          battle.fx('overload', { x: unit.x, y: unit.y, id: unit.id });
+        },
+        onEnd({ battle, unit, reason }) {
+          const over = unit.mem.rockOver ? battle.time - unit.mem.rockOverAt : 0;
+          endOverload(battle, unit);
+          unit.mem.rockOver = false;
+          unit.mem.rockLock = null;
+          if (over > 0 && reason !== 'death' && unit.alive) battle.applyStatus(unit, 'stun', { duration: over, source: unit });
+        },
+      },
+      skills: { 'skcom_magic_rage[3]': { kind: 'duration', mods: { aspd: num(bb.attack_speed) } } },
+      talents: [{ install(battle, unit) {
+        if (s2) battle.on('beforeAttack', (ctx) => {
+          if (ctx.attacker !== unit || !unit.skill?.active) return;
+          const L = unit.mem.rockLock;
+          if (L && L.alive && bodyInKeys(L, unit.rangeKeySet) && canTargetEnemy(unit, L, ctx.profile || unit.profile)) ctx.targets = [L];
+          else unit.mem.rockLock = ctx.targets[0] ?? null;
+        }, { owner: unit });
+        const iv = num(t.interval), max = Math.floor(num(t.max_stack_cnt)), v = num(t.atk);
+        if (!(iv > 0) || !(max > 0) || !v) return;
+        battle.on('tick', () => {
+          if (!up(unit)) return;
+          const n = Math.min(max, Math.floor((battle.time - unit.deployedAt + 1e-9) / iv));
+          const cur = unit.findBuff('rockr:rock');
+          if ((cur ? cur.stacks : 0) === n) return;
+          if (n > 0) battle.addBuff(unit, { key: 'rockr:rock', mods: { atkPct: v }, stacks: n, maxStacks: max, tags: ['talent'] });
+          else battle.removeBuff(unit, 'rockr:rock');
+        }, { owner: unit });
+      } }],
+    };
+  },
+};