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/runtime/World.ts

@@ -9,7 +9,7 @@ import {
   YearlyReport
 } from '../../types/domain'
 
-import { BUILDINGS, bonusOf } from '../../data/buildings'
+import { BUILDINGS, bonusOf, buildingById } from '../../data/buildings'
 import { itemById, pillRecipeByOutput, forgeRecipeByOutput } from '../../data/items'
 import { POSTS } from '../../data/posts'
 import { aspirationById as aspirationOf } from '../../data/aspirations'
@@ -17,6 +17,11 @@ import { computeLegacy, resolveLegacy, peakRealmIndex, grandTechniqueCount, Lega
 import { needsTribulation, tribulationEventId } from './Systems/tribulation'
 import { generateWorld } from '../sim/worldgen'
 import { registerNpcDef, npcById, NpcFamilyDef } from '../../data/npcs'
+import { registerBuildingDef } from '../../data/buildings'
+import { registerPostDef } from '../../data/posts'
+import { registerAspirationDef } from '../../data/aspirations'
+import { registerFormationDef } from '../../data/formations'
+import { registerTraitDef } from '../../data/traits'
 import { addPillRecipe, addForgeRecipe } from '../../data/items'
 import { WorldGenPools } from '../sim/worldgen'
 import { addCalamity as addCalamityImpl } from '../sim/worldsim-data'
@@ -231,6 +236,13 @@ export class World {
       addForgeRecipe: (r) => addForgeRecipe(r),
       addWorldGenPool: (part, source) => WorldGenPools.add(part, source ?? 'ctx'),
       addCalamity: (name, opts) => addCalamityImpl(name, opts),
+      packExtend: (key, additions) => PACK.extend(key as never, additions),
+      mergeAddPack: (key, items) => PACK.mergeAdd(key as never, items),
+      addBuildingDef: (def) => registerBuildingDef(def),
+      addPostDef: (def) => registerPostDef(def),
+      addAspirationDef: (def) => registerAspirationDef(def),
+      addFormationDef: (def) => registerFormationDef(def),
+      addTraitDef: (def) => registerTraitDef(def),
       addCapability: (cap) => {
         // 0.1.23：能力卡注册入 World 实例（防跨档全局泄漏）；UI 全局清单读 SYSTEM_DEFS 展示不受影响
         if (!self.systems[cap.id]) self.systems[cap.id] = { enabled: true }
@@ -760,7 +772,7 @@ export class World {
 
   build(id: string): boolean {
     const fam = this.state.family
-    const def = BUILDINGS[id]
+    const def = buildingById(id)
     if (!def) return false
     if (fam.buildings[id]) return false
     const cost = def.upgradeCost(1)
@@ -774,7 +786,7 @@ export class World {
 
   upgrade(id: string): boolean {
     const fam = this.state.family
-    const def = BUILDINGS[id]
+    const def = buildingById(id)
     const lvl = fam.buildings[id]
     if (!def || !lvl || lvl >= def.maxLevel) return false
     const cost = def.upgradeCost(lvl + 1)