chore: sync latest changes

engine/types.ts

@@ -79,11 +79,21 @@ export interface ChapterInfo {
   defaultVariables?: Record<string, number>
 }
 
+export interface AchievementDef {
+  id: string
+  title: string
+  description: string
+  icon?: string
+  hidden?: boolean
+  condition: Condition
+}
+
 export interface GameData {
   scenes: Record<string, SceneNode>
   startScene: string
   variables: Record<string, number>
   chapters?: ChapterInfo[]
+  achievements?: AchievementDef[]
 }
 
 export interface ChoiceRecord {
@@ -115,3 +125,4 @@ export type EngineEvent =
   | 'hotspotRequest'
   | 'hotspotUpdate'
   | 'chapterUnlock'
+  | 'achievementUnlock'