feat: 自适应支线插入引擎（WIP：scoring/branching 抽取、挂点重定向、10 条支线 JSON、决策落库）

src/App.tsx

@@ -1,6 +1,7 @@
 import { useEffect, useMemo, useState } from 'react';
 import './App.css';
 import { StoryEngine } from './engine/engine';
+import { BRANCHES } from './engine/branches';
 import { LocalStorageEventStore } from './engine/eventStore';
 import { LocalStorageProgressStore } from './engine/progress';
 import { SqliteEventStore, isTauriRuntime } from './engine/sqliteEventStore';
@@ -25,7 +26,7 @@ export default function App() {
     const store = isTauriRuntime() ? new SqliteEventStore() : new LocalStorageEventStore();
     const jev = getJevClient();
     const progress = new LocalStorageProgressStore();
-    return { engine: new StoryEngine(chapters, store, jev, undefined, progress), store, jev, progress };
+    return { engine: new StoryEngine(chapters, store, jev, undefined, progress, BRANCHES), store, jev, progress };
   }, []);
 
   useEffect(() => {