feat(v0.4): 回响编年史 — 跨周目叙事时间轴系统

- 新增 ChronicleEntry / RunStartSnapshot 类型与 GameState 字段
- 新建 chronicle.ts: 5 纪元名生成、模板化叙事、里程碑检测、run delta 计算
- engine.ts performPrestige 构建编年史条目并重置 runStart
- gameStore: init 兼容旧存档 + tickTide 记录星潮 + resolveCurrentNode 计 BOSS 击杀
- chooseConstellationPerk 回填最近一条 entry 的 perksThisAscension
- 新建 ChronicleDialog.tsx: 时间轴 UI + 5 纪元循环色 + 入场动画
- 新增 6 项成就: 首部编年/三纪元回响/五纪元闭环/首杀维度/维度猎手/星潮亲历者
- 新增 chronicle / chronicleOpen 程序化音效
- 修复关键 BUG: PrestigeDialog disabled 逻辑错误导致玩家永远无法飞升
- 修复 UX: newBp=0 时不再永久禁用飞升按钮（v0.3.1 星图+v0.4 编年史已提供动机）
- 统计面板新增 BOSS 击破/星潮亲历/编年史条目 3 行
- 版本号升至 v0.4

src/app/page.tsx

@@ -14,6 +14,7 @@ import { AchievementsPanel } from "@/components/game/AchievementsPanel";
 import { AchievementNotifier } from "@/components/game/AchievementNotifier";
 import { ConstellationPanel } from "@/components/game/ConstellationPanel";
 import { ConstellationDialog } from "@/components/game/ConstellationDialog";
+import { ChronicleDialog } from "@/components/game/ChronicleDialog";
 import {
   StarTideNotifier,
   StarTideIndicator,
@@ -47,6 +48,7 @@ export default function Page() {
   const [prestigeOpen, setPrestigeOpen] = useState(false);
   const [settingsOpen, setSettingsOpen] = useState(false);
   const [constellationOpen, setConstellationOpen] = useState(false);
+  const [chronicleOpen, setChronicleOpen] = useState(false);
   const [mounted, setMounted] = useState(false);
 
   const contact = useGameStore((s) => s.contact);
@@ -63,6 +65,7 @@ export default function Page() {
   const activeTide = useGameStore((s) => s.activeTide);
   const energy = useGameStore((s) => s.energy);
   const hasActiveExpedition = useGameStore((s) => !!s.activeExpedition && !s.activeExpedition.finished);
+  const chronicleCount = useGameStore((s) => s.chronicle?.length ?? 0);
 
   // 挂载检测：避免持久化 store 在 SSR/CSR 间产生 hydration 不一致
   useEffect(() => {
@@ -135,12 +138,27 @@ export default function Page() {
             <div className="leading-tight">
               <h1 className="text-base sm:text-lg font-bold text-gradient">回响星核</h1>
               <p className="text-[9px] sm:text-[10px] text-muted-foreground/70 -mt-0.5 tracking-wider">
-                ECHO NEXUS · v0.3.1
+                ECHO NEXUS · v0.4
               </p>
             </div>
           </div>
           <div className="ml-auto flex items-center gap-1.5">
             <StarTideIndicator />
+            <Button
+              size="icon"
+              variant="ghost"
+              onClick={() => setChronicleOpen(true)}
+              className="h-8 w-8 relative group"
+              aria-label="编年史"
+              title="回响编年史"
+            >
+              <BookOpen className="h-4 w-4 group-hover:text-fuchsia-300 transition-colors" />
+              {chronicleCount > 0 && (
+                <span className="absolute -top-0.5 -right-0.5 min-w-[14px] h-[14px] px-1 rounded-full bg-fuchsia-500 text-[9px] font-mono font-bold text-white flex items-center justify-center border border-fuchsia-300/50">
+                  {chronicleCount}
+                </span>
+              )}
+            </Button>
             {hasPendingPerk && (
               <Button
                 size="sm"
@@ -307,6 +325,7 @@ export default function Page() {
       </footer>
 
       <PrestigeDialog open={prestigeOpen} onOpenChange={setPrestigeOpen} />
+      <ChronicleDialog open={chronicleOpen} onOpenChange={setChronicleOpen} />
       <ConstellationDialog open={constellationOpen} onOpenChange={setConstellationOpen} />
       <SettingsDialog open={settingsOpen} onOpenChange={setSettingsOpen} />
       <AchievementNotifier />
@@ -331,6 +350,9 @@ function StatsPanel() {
     { label: "仓库上限", value: `${formatNum(s.crystalCap)}` },
     { label: "洞见倍率", value: `×${s.insightMult.toFixed(2)}` },
     { label: "累计探险", value: `${s.totalExpeditions} 次` },
+    { label: "BOSS 击破", value: `${s.bossKills ?? 0} 次` },
+    { label: "星潮亲历", value: `${(s.starTidesEncountered ?? []).length} / 6` },
+    { label: "编年史条目", value: `${(s.chronicle ?? []).length} 纪元` },
     { label: "探险能量", value: `${Math.floor(s.energy)} / ${s.energyMax}` },
   ];
   return (