移除 target 目录的 Git 跟踪，添加 .gitignore 规则

target/classes/application.yaml

@@ -1,22 +0,0 @@
-spring:
-  datasource:
-    driver-class-name: com.mysql.cj.jdbc.Driver
-    url: jdbc:mysql://localhost:3306/student_management?useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai
-    username: root
-    password: 123456
-
-
-# MyBatis-Plus ??
-mybatis-plus:
-  mapper-locations: classpath:mapper/*.xml  # Mapper.xml ????
-  type-aliases-package: com.example.student.entity  # ??????
-  configuration:
-    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl  # ??SQL?????????
-
-sa-token:
-  token-name: Authorization    # token名称（与前端对应）
-  timeout: 7200               # token有效期（秒）
-  active-timeout: -1          # 活跃有效期（-1代表不限制）
-  is-concurrent: true         # 是否允许并发登录
-  is-share: false              # 在多人登录时是否共享token
-  token-style: uuid           # token生成风格