v0.1.9: 百年报告 & 发布之窗（报告/迁移/阵型/冬祷/哨兵）

- 百年族史报告：buildReport 纯函数（人口/声望/战力三线、死因榜、突破密度、
  大比战绩、代际长度带）+ 春秋原 SVG 折线视图 + 自动措辞结语
- 存档迁移管线 v2：migrate 链（v1→v2）+ 未来版本拒载（TOO_NEW）+ 导出信封
  带 appId/schemaVersion + 导入全链路迁移校验；saveState 自动写 CURRENT_SCHEMA
- 战斗阵型：锋阵(+10%攻)/雁阵(御5%+溃伤-15%)/蛇阵(溃伤-30%)，三处出战接入
  （遣队/大比/劫掠）点将面板下拉 + 战报首行标阵
- 冬至岁祷：每年十一月三选（观星+3声望/祈福全族修为/问卜吉凶）
- 发布准备：scripts/verify-release.mjs 验收哨兵（npm run verify/verify:package）
  + README 全面重写（架构/守护/版本沿革）；版本号三处归一
- 测试 861→881（报告四例/迁移五链/阵型六则含胜率统计/冬祷四则）；
  金钟罩三指纹零漂移；typecheck/build 通过

src/renderer/game/storage/slots.ts

@@ -1,4 +1,5 @@
 import { GameState, SaveMeta, SnapshotMeta, Id } from '../types/domain'
+import { CURRENT_SCHEMA, APP_ID, exportEnvelope, parseImportEnvelope, migrateIfNeeded } from './migrate'
 
 const DB_PREFIX = 'cotyc-save-'
 let seqCounter = 0
@@ -40,6 +41,7 @@ export class SaveSlot {
 
   async saveState(state: GameState, label: string): Promise<string> {
     const id = `${state.year}.${state.month}.${Date.now().toString(36)}-${(seqCounter++ % 1296).toString(36)}`
+    state.schemaVersion = CURRENT_SCHEMA
     const json = JSON.stringify(state)
     await this.driver.run(
       `INSERT INTO snapshot (id, year, month, savedAt, label, data) VALUES (?, ?, ?, ?, ?, ?)`,
@@ -112,19 +114,23 @@ export class SaveSlot {
 
   async exportAll(): Promise<string> {
     const state = await this.loadState()
+    if (!state) throw new Error('无可导出存档')
     const meta = await this.getMeta()
-    return JSON.stringify({ app: 'cotyc', schemaVersion: 1, meta, state })
+    const envelope = JSON.parse(exportEnvelope(state)) as { schemaVersion: number; payload: GameState }
+    return JSON.stringify({ app: APP_ID, schemaVersion: envelope.schemaVersion, meta, state: envelope.payload })
   }
 
   async importAll(data: string): Promise<boolean> {
     try {
-      const parsed = JSON.parse(data) as { app?: string; schemaVersion?: number; state?: GameState }
-      if (!parsed.state) return false
+      const parsed = parseImportEnvelope(data)
+      if (!parsed.ok) return false
+      const state = parsed.state
+      state.schemaVersion = CURRENT_SCHEMA
       await this.driver.exec(`DELETE FROM snapshot`)
       await this.driver.exec(`DELETE FROM meta`)
-      await this.saveState(parsed.state, 'import')
-      const aliveCount = Object.values(parsed.state.members).filter((c) => c.alive).length
-      await this.setMeta(buildSimpleMeta(parsed.state, this.slot, aliveCount))
+      await this.saveState(state, 'import')
+      const aliveCount = Object.values(state.members).filter((c) => c.alive).length
+      await this.setMeta(buildSimpleMeta(state, this.slot, aliveCount))
       return true
     } catch {
       return false