feat: 付费体系重构 P0 - 配额独立化/简历付费下载/PDF生成

backend/src/modules/resume/resume.schema.ts

@@ -17,6 +17,15 @@ export class Resume {
   @Prop({ default: '' })
   targetPosition: string
 
+  @Prop({ default: 1 })
+  version: number
+
+  @Prop({ default: '' })
+  contentHash: string
+
+  @Prop({ default: false })
+  paidDownload: boolean
+
   readonly createdAt?: Date
   readonly updatedAt?: Date
 }