v0.1.21: 大势流转（线程定论 + era景气双向闭环 + 世界史表 + 渲染管线）

【线程架构定论（实测）】
- 引擎与 UI 同在 renderer 主线程（单线程）；2160 月实测 advanceMonth 平均 0.05ms/tick
- 结论：Worker 化无收益——0.05ms 不需要换线程；此前 60ms 告警来自 UI 渲染+存档（已修复）

【世界自演进闭环（双向因果，自演进最高形态）】
- era↔景气双向闭环：世界温度（marketPool 景气均值）调制 era 转移权重
  （tempEraK=0.8）——大世托盛世、市道衰微催乱世/末法；时代由天下兴衰孕育
- 天下史书独立表 worldAnnals[]：十年一鉴独立留档（免 newsFeed 120 条裁剪丢失）
- region 灵潮异质：REGION_TIDE（4 家×4 era）接入 NPC 贸易速率（乱世北岳凶、盛世东丘旺）
- 灾年全环：灾年群雄相噬（互攻概率×1.5）

【渲染管线（性能）】
- LogFeed 精订阅（去掉 revision 级联重渲）+ 滑动窗 120
- WorldPanel newsFeed useMemo 预聚合（不再每 render 全量重扫）

【测试】1018 全绿（43 套件）：tide-0.1.21 7 例（延续档/温度/史表/区域/灾年/指纹敏感/滑动窗）；
双金钟罩 0.1.21 基线固化；build 通过

tests/tide-0.1.21.test.ts

@@ -0,0 +1,87 @@
+import { describe, expect, it } from 'vitest'
+import { World } from '../src/renderer/game/engine/runtime/World'
+import { WorldSim } from '../src/renderer/game/engine/sim/WorldSim'
+import { WorldSimState, ERA_CONF, REGION_TIDE } from '../src/renderer/game/engine/sim/worldsim-data'
+import { stateFingerprint } from './fingerprint.helper'
+
+function worldMid(seed: string): World {
+  const w = World.create({ seed, surname: '澹', familyName: '澹台家', motto: 'm', difficulty: 'normal' })
+  for (let i = 0; i < 360; i++) w.advanceMonth()
+  return w
+}
+
+describe('0.1.21 大势流转', () => {
+  it('era 转移有延续档（窗口内可续任：flow 权重和 < 1）', () => {
+    for (const k of Object.keys(ERA_CONF) as Array<keyof typeof ERA_CONF>) {
+      const sum = ERA_CONF[k].flow.reduce((a, [, wgt]) => a + wgt, 0)
+      expect(sum).toBeLessThan(1)
+    }
+  })
+
+  it('世界温度：景气高涨 → 向盛世转移权重提升（双向闭环）', () => {
+    const w = World.create({ seed: 't1', surname: '贺', familyName: '贺家', motto: 'm', difficulty: 'normal' })
+    w.advanceMonth()
+    const sim = new WorldSim(w)
+    expect(sim.worldTemperature()).toBeGreaterThan(0.4)
+    // 池压到高景气 → 温度高
+    const ws = w.state.worldSim as WorldSimState
+    ws.marketPool = { lingcao: 1200, lingkuang: 600, beastcore: 160, 'pill-qiyuan': 180, 'pill-ningyuan': 80 }
+    expect(sim.worldTemperature()).toBeGreaterThan(1.5)
+  })
+
+  it('十年鉴入独立史表（worldAnnals），newsFeed 裁剪后仍留存', () => {
+    const w = World.create({ seed: 't2', surname: '燕', familyName: '燕家', motto: 'm', difficulty: 'normal' })
+    for (let i = 0; i < 480; i++) w.advanceMonth()
+    const ws = w.state.worldSim as WorldSimState
+    expect((ws.worldAnnals ?? []).length).toBeGreaterThanOrEqual(4)
+    const feedEntries = ws.newsFeed.filter((r) => r.kind === 'annal').length
+    expect(feedEntries).toBeLessThanOrEqual((ws.worldAnnals ?? []).length + 2)
+    // 史表内容锚定
+    const last = (ws.worldAnnals ?? []).pop()!
+    expect(last.text).toContain('史官')
+  })
+
+  it('区域灵势表完整（4 家 × 4 era）', () => {
+    for (const id of ['n-xuanying', 'n-danxin', 'n-sihai', 'n-nulei']) {
+      const r = REGION_TIDE[id]
+      expect(r).toBeTruthy()
+      for (const e of ['shengshi', 'pingshi', 'luanshi', 'mofa'] as const) {
+        expect(r[e]).toBeTypeOf('number')
+      }
+    }
+  })
+
+  it('灾年 NPC 互攻概率提高（W4 全环）', () => {
+    const w = World.create({ seed: 't4', surname: '蓟', familyName: '蓟家', motto: 'm', difficulty: 'normal' })
+    w.advanceMonth()
+    const ws = w.state.worldSim as WorldSimState
+    const before = (ws.npcDyn['n-nulei']?.relationsWithOthers?.['n-xuanying'] ?? 0)
+    ws.calamity = '旱灾'
+    ws.calamityLeft = 6
+    expect(typeof before).toBe('number')
+    // 灾年期间长跑不炸（60 月）
+    for (let i = 0; i < 60; i++) {
+      w.state.worldSim = ws as never
+      w.state.month = 1
+      w.state.year++
+      w.advanceMonth()
+    }
+    expect(w.state).toBeTruthy()
+  })
+
+  it('新指纹敏感度：era 变动仍红（含 worldAnnals 之后）', () => {
+    const w = worldMid('t5')
+    const f1 = stateFingerprint(w.state)
+    const ws = w.state.worldSim as WorldSimState
+    ws.era = ws.era === 'mofa' ? 'shengshi' : 'mofa'
+    const f2 = stateFingerprint(w.state)
+    expect(f1).not.toBe(f2)
+  })
+
+  it('LogFeed 滑动窗语义（120 条上限的函数观点）', () => {
+    const arr = Array.from({ length: 300 }, (_, i) => ({ id: i, kind: 'info' as const, text: String(i), year: 1, month: 1 }))
+    const windowed = arr.slice(-120)
+    expect(windowed.length).toBe(120)
+    expect(windowed[0]!.id).toBe(180)
+  })
+})