Revert "注册登录,用户等级,社交,动态,新手任务"

This reverts commit 1c359108ca33d46271920ee0cd57dddcb7012937.

Reason for revert: <冲突>

Change-Id: Ie586267169acac99130b1fadf4a5f433441c4b8c
diff --git a/src/main/java/com/example/myproject/entity/Promotion.java b/src/main/java/com/example/myproject/entity/Promotion.java
new file mode 100644
index 0000000..4ca846b
--- /dev/null
+++ b/src/main/java/com/example/myproject/entity/Promotion.java
@@ -0,0 +1,34 @@
+package com.example.myproject.entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Data
+@TableName("promotion")
+public class Promotion {
+    @TableId(type = IdType.AUTO)
+    private Long id;
+    
+    private String name;
+    
+    private String description;
+    
+    private LocalDateTime startTime;
+    
+    private LocalDateTime endTime;
+    
+    private double discountPercentage;
+    
+    private String applicableTorrentIds;
+    
+    private LocalDateTime createTime;
+    
+    private LocalDateTime updateTime;
+    
+    private Boolean isDeleted;
+} 
\ No newline at end of file