v0.1.4: 百年定局（终局/大比/寄读/春秋原）

- 望气定鼎：stats 追踪四维（人兴/道兴/威名/香火）+ 十二称号分档 + 铭文诗
  春秋原页预演称号，落印定局（青册留档，不阻继续游历）
- 太虚大比：每五年征召，点将三关（初试/拔擢/问鼎）复用战斗结算，
  名次四档红利（声望/灵石/全场好感），史书战报自动落笔
- 宗门寄读：随机宗门收徒（适龄少年），寄读 2-4 年期间每季寄资源，
  期满三选：归来精进（可触发突破+随机机运）或续读深造；低概率择师不回
- 求经台：藏书阁≥3 解锁，两年一访得稀有功法
- 春秋原复盘页：气数四维图/岁末族簿汇编/生卒与突破年表/大比年表
- 修复：大比征召曾因月份条件错过整年；抢在百年庆典前的优先级倒置
- 测试 161→176（评分边界/称号分档/大比三轨/寄读全链/求经冷却）

src/renderer/game/engine/world.ts

@@ -11,6 +11,8 @@ import {
 import { Rng } from '../core/rng'
 import { BUILDINGS } from '../data/buildings'
 import { POSTS } from '../data/posts'
+import { TECHNIQUES } from '../data/techniques'
+import { computeLegacy, resolveLegacy, peakRealmIndex, grandTechniqueCount, LegacyArch } from '../core/legacy'
 import { productionTick } from './systems/production'
 import { deathTick, woundHealTick } from './systems/lifecycle'
 import { cultivationTick, resolveBreakthrough } from './systems/cultivation'
@@ -37,6 +39,16 @@ export function normalizeGameState(state: GameState): GameState {
   if (!state.finance) state.finance = { accum: 0 }
   if (!state.yearStats) state.yearStats = { births: 0, deaths: 0 }
   if (!state.yearlyReports) state.yearlyReports = []
+  if (!state.stats) {
+    state.stats = {
+      repPeak: state.family?.reputation ?? 0,
+      popPeak: Object.values(state.members).filter((c) => c.alive).length,
+      maxRealmIdx: peakRealmIndex(state.members ?? {}),
+      techniqueGrand: grandTechniqueCount(state.members ?? {}),
+      tourneyHistory: [],
+      feishengCount: 0
+    }
+  }
   if (typeof state.totalTicks !== 'number') state.totalTicks = 0
   if (typeof state.seq !== 'number') state.seq = 10
   if (!state.battles) state.battles = []
@@ -144,6 +156,33 @@ export class World {
     this.checkHead()
     const stonesEnd = s.family.stones
     s.finance.accum += stonesEnd - stonesStart
+    this.trackStats()
+  }
+
+  private trackStats(): void {
+    const s = this.state
+    const st = s.stats
+    if (s.family.reputation > st.repPeak) st.repPeak = s.family.reputation
+    const pop = this.aliveMembers().length
+    if (pop > st.popPeak) st.popPeak = pop
+    const idx = peakRealmIndex(s.members)
+    if (idx > st.maxRealmIdx) st.maxRealmIdx = idx
+    const g = grandTechniqueCount(s.members)
+    if (g > st.techniqueGrand) st.techniqueGrand = g
+  }
+
+  legacyPreview() {
+    return computeLegacy(this.state)
+  }
+
+  resolveLegacyNow(): LegacyArch {
+    const arch = resolveLegacy(this.state)
+    this.state.stats.resolvedYear = this.state.year
+    this.state.stats.resolveTitle = arch.title
+    this.state.family.flag['resolved'] = true
+    this.chronicle('event', `望气观澜，本族百年气数终有定论——「${arch.title}」。开卷盖印，史入青册。`, undefined, true)
+    this.log('good', `定鼎：${arch.title}。`)
+    return arch
   }
 
   private yearStart(): void {
@@ -343,12 +382,12 @@ export class World {
   }
 
   postCount(def: string): number {
-    return this.aliveMembers().filter((c) => c.post === def).length
+    return this.aliveMembers().filter((c) => c.post === def && c.state !== 'apprentice').length
   }
 
   assignPost(memberId: Id, postId: string | undefined): boolean {
     const c = this.memberById(memberId)
-    if (!c.alive) return false
+    if (!c.alive || c.state === 'apprentice') return false
     if (postId === undefined || postId === '') {
       c.post = undefined
       return true
@@ -402,6 +441,27 @@ export class World {
     return true
   }
 
+  seekSutra(): boolean {
+    const fam = this.state.family
+    if ((fam.buildings['cangshu'] ?? 0) < 3) return false
+    const last = (fam.flag['sutraCD'] as number | undefined) ?? -999
+    if (this.state.year - last < 2) return false
+    if (fam.stones < 150) return false
+    fam.stones -= 150
+    fam.flag['sutraCD'] = this.state.year
+    const pool = TECHNIQUES.filter((t) => t.grade >= 2 && !fam.techniques.includes(t.id))
+    if (pool.length === 0) {
+      this.log('info', '求经访道：天下典籍已入庶几，无可再得。')
+      this.chronicle('event', '求经台广搜天下，经卷已穷。', undefined, false)
+      return true
+    }
+    const t = this.rng.pick(pool)
+    fam.techniques.push(t.id)
+    this.chronicle('event', `遣人下江南求经，携回《${t.name}》。`, undefined, true)
+    this.log('good', `求经台访得《${t.name}》！`)
+    return true
+  }
+
   tauntNpc(npcId: string): boolean {
     const fam = this.state.family
     const npc = this.state.npcFamilies[npcId]
@@ -425,7 +485,7 @@ export class World {
     const me = this.memberById(id)
     const meG = me.gender
     return this.aliveMembers()
-      .filter((c) => c.gender !== meG && c.state !== 'expedition')
+      .filter((c) => c.gender !== meG && c.state !== 'expedition' && c.state !== 'apprentice')
       .filter((c) => w2age(this, c) >= 16 && w2age(this, c) <= 46)
       .filter((c) => !c.spouseId || this.isWidowed(c))
       .filter(