chore: engine, types, demo, and UI updates

src/App.vue

@@ -195,6 +195,32 @@ function handleSpeedChange(rate: number) {
   currentSpeed.value = rate
 }
 
+function onBattleResultContinue() {
+  store.setShowBattleResult(false)
+  const scene = store.currentScene
+  if (!scene) return
+  if (scene.nextScene) {
+    if (Array.isArray(scene.nextScene)) {
+      for (const route of scene.nextScene) {
+        if (!route.conditions || engine.stateManager.evaluate(route.conditions)) {
+          const next = engine.sceneManager.getScene(route.targetScene)
+          if (next) { engine.goToScene(next) }
+          return
+        }
+      }
+    } else {
+      const next = engine.sceneManager.getScene(scene.nextScene)
+      if (next) { engine.goToScene(next) }
+      return
+    }
+  }
+  if (scene.choices && scene.choices.length > 0) {
+    const first = scene.choices[0]
+    const next = engine.sceneManager.getScene(first.targetScene)
+    if (next) { engine.goToScene(next) }
+  }
+}
+
 watch(() => store.currentScene?.id, async (newId) => {
   if (!newId) { canSkip.value = false; return }
   const scene = store.currentScene
@@ -370,7 +396,7 @@ init()
       <BattleResult
         v-if="store.showBattleResult"
         :result="store.battleResultData"
-        @continue="store.setShowBattleResult(false)"
+        @continue="onBattleResultContinue"
       />
       <MainMenu
         v-if="!started || store.gameEnded"