feedback1 WA: Lappland counts her own first refresh; Mutation Cell is not consumed

Player reports after 0.1.0, #1 and #4.

#1 拉普兰德 (garrison_123, SERVER_GAIN_BOND_LAYER_BY_REFRESH_CNT) checked the
player's refresh count of the round, so a copy bought after the round's first
manual refresh never stacked that round. Players report the official
behaviour: the first refresh after acquiring her also stacks. Each copy now
counts the manual refreshes it witnessed this round (board or hand) through a
per-piece round counter (PlayerState.pieceRoundCount, ctx.incPieceCounter); an
elite merged this round keeps the highest count of its copies [ASSUMED]. The
"本回合每刷新过1次" multiplier traits keep the player's count.

#4 突变细胞 destroyed itself after one transformation. Official text never
says 销毁 (every consumable's does), PRTS notes "原干员销毁，获得一名高一阶的随机
初始干员", and players re-inject the cell every round. The built-in now replaces
the carrier with a random normal operator one tier higher (max 6) and returns
the carrier's equipment, the cell included, to the hand
(transformChess returnItems); the content override is gone. The item card
shows the rule (items.json note, build-data ITEM_RULES); bots inject their
least valuable single normal operator below tier 6 (bot.js cellTarget).

server/sim/content/items/meta.js

@@ -3,17 +3,17 @@
 // The engine built-ins (server/match/builtinMeta.js) already implement most consume-on-equip items and Arts from the
 // concrete item's params; they are reviewed and kept (盟约之币, 骑士储蓄罐, 随身身份牌, 精打细算玩偶, 简易通讯机 (tier ≤
 // shop level), 见钱眼开玩偶, 人事部文档 (cap 9), 博士投影 (golden now / normal at the next round start), 拟态物质, 信标,
-// 商业包装方案 (count from the concrete record: 8 / golden 7)). The Arts' rangeGrid (画卷 = placed tile + the tile in
-// front) and the per-round limit are engine rules.
+// 商业包装方案 (count from the concrete record: 8 / golden 7), 突变细胞 (after the battle the carrier becomes a NORMAL
+// random tier+1 operator, max 6; its equipment — the cell too, which is not consumed (player feedback after 0.1.0) —
+// returns to the hand)). The Arts' rangeGrid (画卷 = placed tile + the tile in front) and the per-round limit are engine
+// rules.
 // Overridden / added here (a built-in, when present, is wrapped — never re-implemented):
 //   画卷         the copy keeps the target's items; a copied normal item that pairs with an owned one merges and the
 //               golden stays in the hand (the built-in equipped the merged golden on the copy, and its live loop over
 //               the target's items skipped the item after a merge)
 //   紧急调度券   a shop operator leaves its slot only when it was actually granted (built-in cleared the slot first)
 //   寻呼模块     the special refresh shows `refresh_cnt` DIFFERENT operators (fewer when the pool has no more)
-//   突变细胞     after the battle the carrier becomes a NORMAL random tier+1 operator; its other equipment goes back to
-//               the hand (built-in kept it on the new operator)
-//   教鞭        trap_create_self_choice {choice_event: hunter_band_1}: the bounty is a 战术特训 card (choices.json
+//   教鞭       trap_create_self_choice {choice_event: hunter_band_1}: the bounty is a 战术特训 card (choices.json
 //               cards.bounty payout `perfect`, e.g. 战术特训·飞行I "若各自行动阶段就达成完美作战，获得1资金") — PRTS
 //               卫戍协议：盟约 下半/PRTS盟约记录 §法术 教鞭 "于3个战术特训的悬赏任务中选择一项", §机变阶段 "※以下悬赏任务仅由
 //               法术教鞭生成", and 杜宾 加练！ "<教鞭>：使用后为下场战斗添加额外敌人，若自身战斗完美作战可获得资金" (user
@@ -103,23 +103,6 @@ export function registerMeta(registry) {
     },
   }));
 
-  // 突变细胞 — char_chess_transformation_equip
-  wrap(registry, 'chess_item_5_08_e', () => ({
-    onBattleResult(ctx) {
-      const { piece, holder } = ctx.source;
-      if (!piece || !holder) return;
-      const tier = Math.min(6, ctx.gd.tierOf(holder.id) + 1);
-      const id = ctx.rollChess({ tier });
-      if (!id) return;
-      const others = (ctx.piece(holder.uid)?.items || holder.items || []).filter((it) => it && it.uid !== piece.uid);
-      ctx.destroyPiece(piece.uid);
-      for (const it of others) {
-        if (ctx.destroyPiece(it.uid)) ctx.grantItem(it.id, { source: 'mutation' });
-      }
-      ctx.transform(holder.uid, ctx.gd.baseIdOf(id));
-    },
-  }));
-
   // 教鞭 / “神秘顾客” — trap_create_self_choice {choice_event}: 教鞭 a 战术特训 card, “神秘顾客” a band bounty (enemyeffect_b_*)
   for (const [key, family] of [['chess_item_6_03_m', isTraining], ['chess_item_6_01_m', isBandBounty]]) {
     wrap(registry, key, (base) => ({