v0.1.19: 八方风雨 + 孤立系统归并（双主线，1002 全绿）

【主线一：世界自演进深化《八方风雨》】
- NPC 战略姿态 stance：守成/扩张/隐忍/结盟四态，年首评估（era>景气>power>relation）
  全行为调制：raid 概率×2/×0.4/×0、互攻阈值 -40/-70/不攻、贸量 ×1.3/×0.7、
  赠礼收益 ally×1.3、结盟门槛 ally 放宽至30——NPC 从统计物理到行为战略
- 超卖潮（谷贱伤农）：池>1.8×base 世界产能回调×0.7 + 年度播报（防玩家玩崩市场）
- 盟约连坐：结盟令世仇（rel<-50）对玩家-20；盟者世仇 raid 概率×2
- 盟友求援：互攻失利盟友告急（distress 旗标）——WorldPanel 响应（出资200/见死不救）
- 干预天下：调停（50灵石令世仇-60→-25、声望+2）/ 资助盟友；恩怨网情报视图（各家关系展开+调停钮）

【主线二：孤立系统归并引擎】
- P0 兜底修复：empty() 收敛 makeWorldSimState 单源 + normalize 补 tideTicks/calamityLeft/
  era/eraStartYear/prosperity/distress/overfluxYear（旧档 NaN 级联防死）
- FxGate 从 engine/kernel/fxqueue.ts 并入 ui/fx.ts（kernel 清纯引擎；deltas 顶层导出，
  3 处引用 10 行改动）；engine 侧零 UI 依赖再下一城
- 音效语义补充：onFx→blade/pulse/spark→sWar/sGong/sBell；onLog kind 兜底保留（不静音）
- store.advance drift/season 段左移 fx.ts（fxSeason 复活接管 season 检测）
- 死码清除：timesense.tideOf/tintLabel、tideDir 全链（类型/初始/写入/domain）
- domain.ts worldSim 局部类型补全 0.1.18/0.1.19 全部新字段（断言类型安全）

【测试】1002 全绿（41 套件）：stance-world 7 例（兜底/姿态/raid/超卖/连坐/调停/求援）

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, CALAMITY_EFFECT, CALAMITY_FAMILY, CalamityName, POOL_BASE } from './worldsim-data'
+import { WorldSimState, NpcDynamics, WORLDSIM, ERA_CONF, ERA_DURA, makeWorldSimState, NpcStance, CALAMITY_EFFECT, CALAMITY_FAMILY, CalamityName, POOL_BASE } from './worldsim-data'
 import { pack } from '../../data/registry'
 import { ITEMS } from '../../data/items'
 import { npcById } from '../../data/npcs'
@@ -196,6 +196,8 @@ function initSim(w: World): WorldSimState {
   for (const id of Object.keys(w.state.npcFamilies)) {
     s.npcDyn[id] = {
       prosperity: 50,
+      stance: 'guardian',
+      stanceSinceYear: 1,
       leaderName: '新任宗主',
       leaderRealmIdx: MAJOR_ORDER.indexOf(npcById(id).leaderRealm),
       leaderAge: 40 + w.rng.int(0, 29),
@@ -209,18 +211,7 @@ function initSim(w: World): WorldSimState {
 }
 
 function empty(): WorldSimState {
-  return {
-    marketPool: { lingcao: 600, lingkuang: 300, beastcore: 80, 'pill-qiyuan': 90, 'pill-ningyuan': 40 },
-    npcDyn: {},
-    secretQi: {},
-    tide: 0.5,
-    tideDir: 1,
-    tideTicks: 0,
-    calamityYear: -99,
-    newsFeed: [],
-    lastNewsMonth: -99,
-    npcSuccessions: 0
-  }
+  return { ...makeWorldSimState() }
 }
 
 /** A2+A3：世界常驻供给与需求（潮汐乘化）——池有了呼吸 */
@@ -231,14 +222,25 @@ function worldBreath(w: World, s: WorldSimState): void {
   const supplySpan = Math.max(0.75, Math.min(1.35, span))
   const eraSupply = era.supplyMult
   const eraDemand = era.demandMult
+  let overflow = false
   for (const id of MARKET_IDS) {
     const base = poolBase(id)
     const cur = s.marketPool[id] ?? base
-    const supply = base * WORLDSIM.worldSupplyRate * supplySpan * eraSupply
+    // 超卖潮：池过剩 > 1.8×base 时世界产能自发回调（谷贱伤农）
+    const saturated = cur > base * 1.8
+    if (saturated) overflow = true
+    const supply = base * WORLDSIM.worldSupplyRate * supplySpan * eraSupply * (saturated ? 0.7 : 1)
     const demand = base * WORLDSIM.worldDemandRate * eraDemand
     s.marketPool[id] = clamp(cur + supply - demand, base * 0.12, base * WORLDSIM.tradeCeilPct)
   }
-  void w
+  // 超卖播报（年一次）——玩家能看到"别把市场玩崩"
+  if (overflow && s.overfluxYear !== w.state.year) {
+    s.overfluxYear = w.state.year
+    s.newsFeed.push({
+      year: w.state.year, month: w.state.month, src: '坊市', text: '谷贱伤农——市面货丰价滞，灵田多有弃耕，天下产能暂歇。', kind: 'quote'
+    })
+    if (w.state.totalTicks > 12) w.log('bad', '【坊市】谷贱伤农，世界产能回调。')
+  }
 }
 
 /** A4：NPC 按 def.sells/buys 与池交易——世界波动的背后有了玩家（NPC 化） */
@@ -250,7 +252,9 @@ function npcTrade(w: World, s: WorldSimState, noise: number): void {
     const dyn = s.npcDyn[id] ?? initDynFor(id)
     s.npcDyn[id] = dyn
     const isCalamity = !!s.calamity
-    const rate = WORLDSIM.npcTradeRate * (isCalamity ? 0.7 : 1)
+    const stance2 = (dyn.stance ?? 'guardian') as string
+    const tradeMult = stance2 === 'expand' ? 1.3 : stance2 === 'endure' ? 0.7 : 1
+    const rate = WORLDSIM.npcTradeRate * (isCalamity ? 0.7 : 1) * tradeMult
     // 景气驱动（1-2）：入不敷出则衰、仓廪常足则旺
     let prosperity = dyn.prosperity ?? 50
     // 卖：NPC 抛货 → 池增；有货自给，景气微涨
@@ -336,6 +340,16 @@ function evolveNpc(w: World, s: WorldSimState, noise: number): void {
     const lifespan = MAJORS[curRealm].lifespan
     if (w.state.month === 1) {
       dyn.leaderAge++
+      // 姿态评估（era>景气>power>relation）
+      if (w.state.month === 1 && (w.state.year - (dyn.stanceSinceYear ?? 1)) >= 8) {
+        const newStance = assessStance(w, id, dyn)
+        if (newStance !== dyn.stance) {
+          dyn.stance = newStance
+          dyn.stanceSinceYear = w.state.year
+          pushNews(w, s, [id])
+          w.log('info', `【天下】${def.name} 态度一变——${STANCE_NAME[newStance]}。`)
+        }
+      }
       // 关系漂移：年首各 ±5（邻近的讲合、世仇的愈深）
       for (const oid of ids) {
         if (oid === id) continue
@@ -363,7 +377,10 @@ function evolveNpc(w: World, s: WorldSimState, noise: number): void {
         const foe = w.state.npcFamilies[oid]
         if (!foe) continue
         const rel = dyn.relationsWithOthers[oid] ?? 0
-        if (rel < -50 && w.rng.chance(WORLDSIM.npcEventChance)) {
+        const foeStance = dyn.stance ?? 'guardian'
+        const hateBar = foeStance === 'expand' ? -40 : foeStance === 'endure' ? -70 : -50
+        if (foeStance === 'ally') void hateBar
+        if (rel < hateBar && foeStance !== 'ally' && w.rng.chance(WORLDSIM.npcEventChance)) {
           // 1-3 蝴蝶效应：互攻按实力加权（强者越可能胜，弱者一败再败）
           const wSum = npc.power + foe.power
           const winner = w.rng.chance(wSum > 0 ? npc.power / wSum : 0.5) ? npc : foe
@@ -384,6 +401,15 @@ function evolveNpc(w: World, s: WorldSimState, noise: number): void {
             text: `${winner.name} 与 ${loser.name} 起衅——痛挫其锋，势力大动。`
           })
           w.log('info', `【天下】${winner.name} 击破 ${loser.name}，气象一新。`)
+          // 盟友求援：下盟友处告急，请其同盟（玩家）出手
+          if (loser.allied) {
+            s.distress = { id: loser.id, year, month: 1 }
+            s.newsFeed.push({
+              year, month: 1, src: loser.name,
+              text: `${loser.name} 遭${winner.name}重创，遣使来吾族求援：请解囊相助。`, kind: 'npc'
+            })
+            w.log('bad', `【天下】盟邦 ${loser.name} 遇袭告急！`)
+          }
           break
         }
       }
@@ -391,10 +417,35 @@ function evolveNpc(w: World, s: WorldSimState, noise: number): void {
   }
 }
 
+const STANCE_NAME: Record<NpcStance, string> = { guardian: '守成', expand: '扩张', endure: '隐忍', ally: '结盟' }
+
+/** 姿态评估：乱世逼扩张、低谷存隐忍、盛世好结盟、元气足则守成 */
+function assessStance(w: World, id: string, dyn: NpcDynamics): NpcStance {
+  const npc = w.state.npcFamilies[id]
+  const era = ((w.state.worldSim as WorldSimState)?.era ?? 'pingshi') as string
+  const prosperity = dyn.prosperity ?? 50
+  const power = npc?.power ?? 100
+  const relation = npc?.relation ?? 0
+  // 硬判据优先
+  if (prosperity < 30 || power < 45) return 'endure'
+  if (relation >= 50) return 'ally'
+  if (era === 'luanshi' && power >= 120) return 'expand'
+  if (era === 'mofa') return 'endure'
+  // 软权重：乱世偏扩张、盛世偏守成、平世均衡
+  const W: Record<NpcStance, number> = { guardian: 3, expand: era === 'luanshi' ? 6 : 2, endure: era === 'mofa' ? 5 : 2, ally: era === 'shengshi' || era === 'pingshi' ? 4 : 1 }
+  const pick = (Object.keys(W) as NpcStance[]).sort((a, b) => W[b] - W[a])
+  // 用幂等 rng 抽取（先取最高权）+ 30% 软翻转
+  const top = pick[0]!
+  if (w.rng.chance(0.7)) return top
+  return pick[1]!
+}
+
 function initDynFor(id: string): NpcDynamics {
   const def = npcById(id)
   return {
     prosperity: 50,
+    stance: 'guardian',
+    stanceSinceYear: 1,
     leaderName: `${def.name.replace('氏', '')}氏宗主`,
     leaderRealmIdx: MAJOR_ORDER.indexOf(def.leaderRealm),
     leaderAge: 45,