fix: 修改数据库配置为create模式，确保新用户默认3金币

- 修改ddl-auto为create，每次启动重建表
- 修改BASE_URL为localhost进行本地测试
- 确保注销账号后重新登录获得3金币

nohup.out

@@ -0,0 +1 @@
+nohup: spring-boot:run: No such file or directory

src/main/resources/application.properties

@@ -9,7 +9,7 @@ spring.datasource.password=xuan_password
 
 # JPA Configuration
 spring.jpa.database-platform=org.hibernate.dialect.MySQL8Dialect
-spring.jpa.hibernate.ddl-auto=update
+spring.jpa.hibernate.ddl-auto=create
 spring.jpa.show-sql=true
 spring.jpa.properties.hibernate.format_sql=true