v0.1.31: 万物皆可 MOD——内容面七口 + kind 分类 + 数值松弛 + 测试 4006

【MOD 内容面总攻（七口新开：14 口全）】
- items/techniques：PACK 增量合入（extend 键级/mergeAdd 数组——内置不覆盖）
  ——新丹药武器有名字/新功法入藏书阁·掉落·拍卖
- buildings：新建筑（produceTable 表达式 DSL '4 * L' 白名单）——领地页可建可升、
  productionTick 自动消费、World/build/upgrade 走双源建筑表
- posts/aspirations/formations/traits：职事（11 效果型）/志向（5 型）/阵型（攻防系数）/
  性格（bonus 白名单集）——全部双源注册（registerXxx），卸载只摘自己的键

【MOD 类型（M5）】kind: content/data/rules 分类标签；【M6】ERA_DURA 聚合（eraDuraOf）
+ REGION_TIDE 聚合（regionTideOf）——默认零漂（金钟罩实证未红）

【测试 4006】85 套件（+1000：matrix-macro 100 + sprint-a/b/c 900 +
内容面覆盖矩阵后续）——全部语义真实；金钟罩 0.1.31 零漂（聚合默认表不变）

【验证】4006 全绿；build 通过

src/renderer/game/engine/sim/WorldSim.ts

@@ -1,6 +1,6 @@
 /** WorldSim —— 世界自进化引擎（game/engine/sim/WorldSim.ts） */
 import { World } from '../runtime/World'
-import { WorldSimState, NpcDynamics, WORLDSIM, ERA_CONF, ERA_DURA, makeWorldSimState, NpcStance, REGION_TIDE, calamityNames, calamityFamilyOf, calamityEffectOf, CalamityName, POOL_BASE, worldNum } from './worldsim-data'
+import { WorldSimState, NpcDynamics, WORLDSIM, ERA_CONF, makeWorldSimState, NpcStance, REGION_TIDE, eraDuraOf, regionTideOf, calamityNames, calamityFamilyOf, calamityEffectOf, CalamityName, POOL_BASE, worldNum } from './worldsim-data'
 import { pack } from '../../data/registry'
 import { ITEMS } from '../../data/items'
 import { npcById, getNpcDefs, registerNpcDef, unregisterNpcDef } from '../../data/npcs'
@@ -48,7 +48,7 @@ export class WorldSim {
     // ---- D0. 世纪弧转移（年首评估） ----
     if (this.w.state.month === 1) {
       const curEra = s.era ?? 'pingshi'
-      const dur = ERA_DURA[curEra]
+      const dur = eraDuraOf(curEra)
       const age = this.w.state.year - (s.eraStartYear ?? 1)
       if (age >= dur[0] && age < dur[1] + 5) {
         const flow = ERA_CONF[curEra].flow
@@ -375,7 +375,7 @@ function npcTrade(w: World, s: WorldSimState, noise: number): void {
     const stance2 = (dyn.stance ?? 'guardian') as string
     const tradeMult = stance2 === 'expand' ? 1.3 : stance2 === 'endure' ? 0.7 : 1
     // W3 区域灵势：各 era 修正（e.g. 乱世北岳玄影峰灵衰 0.08）
-    const regionMod = 1 + (REGION_TIDE[id]?.[(s.era ?? 'pingshi') as 'shengshi'] ?? 0)
+    const regionMod = 1 + regionTideOf(id, s.era ?? 'pingshi')
     const rate = worldNum('npcTradeRate') * (isCalamity ? 0.7 : 1) * tradeMult * regionMod
     // 景气驱动（1-2）：入不敷出则衰、仓廪常足则旺
     let prosperity = dyn.prosperity ?? 50

src/renderer/game/engine/sim/worldsim-data.ts

@@ -104,6 +104,18 @@ export const ERA_CONF: Record<'shengshi' | 'pingshi' | 'luanshi' | 'mofa', {
   mofa: { name: '末法', desc: '灵机衰微，大能隐迹，仙路将绝。', calamityMult: 1.2, supplyMult: 0.7, demandMult: 0.85, auctionMult: 0.6, tideBias: -0.09, flow: [['pingshi', 0.4], ['shengshi', 0.2]] }
 }
 
+const ERA_DURA_OVERRIDES = new Map<string, [number, number]>()
+export function overrideEraDura(era: string, dur: [number, number]): void {
+  if (era in ERA_DURA) ERA_DURA_OVERRIDES.set(era, dur)
+}
+export function resetEraDura(era?: string): void {
+  if (era) ERA_DURA_OVERRIDES.delete(era)
+  else ERA_DURA_OVERRIDES.clear()
+}
+export function eraDuraOf(era: string): [number, number] {
+  return ERA_DURA_OVERRIDES.get(era) ?? ERA_DURA[era as keyof typeof ERA_DURA] ?? [20, 40]
+}
+
 /** era 持续年数区间（转移时机） */
 export const ERA_DURA: Record<'shengshi' | 'pingshi' | 'luanshi' | 'mofa', [number, number]> = {
   shengshi: [25, 45],
@@ -112,6 +124,22 @@ export const ERA_DURA: Record<'shengshi' | 'pingshi' | 'luanshi' | 'mofa', [numb
   mofa: [20, 40]
 }
 
+const REGION_TIDE_OVERRIDES = new Map<string, Record<string, number>>()
+export function overrideRegionTide(npcId: string, byEra: Record<string, number>): void {
+  REGION_TIDE_OVERRIDES.set(npcId, byEra)
+}
+export function resetRegionTide(npcId?: string): void {
+  if (npcId) REGION_TIDE_OVERRIDES.delete(npcId)
+  else REGION_TIDE_OVERRIDES.clear()
+}
+export function regionTideOf(npcId: string, era: string): number {
+  const override = REGION_TIDE_OVERRIDES.get(npcId)?.[era]
+  if (override !== undefined) return override
+  const base = REGION_TIDE[npcId]
+  if (!base) return 0
+  return base[era as keyof typeof base] ?? 0
+}
+
 /** 区域灵势（NPC id × era → 修正量 +-0.06~0.1）：乱世北岳凶、盛世东丘旺…… */
 export const REGION_TIDE: Record<string, Record<'shengshi' | 'pingshi' | 'luanshi' | 'mofa', number>> = {
   'n-xuanying': { shengshi: 0.06, pingshi: 0, luanshi: -0.08, mofa: -0.06 },