fix(flyway): 修复Flyway初始化问题并完善测试覆盖

- 修复数据库连接配置，确保Flyway迁移正常执行
- 完善Repository接口的查询方法，支持审计日志和操作日志查询
- 增强Service层业务逻辑，优化用户、角色、菜单等核心功能
- 补充单元测试和集成测试，确保系统稳定性
- 添加测试数据初始化脚本，支持自动化测试环境搭建

关联任务：Flyway数据库迁移优化

scripts/truncate_all.sql

@@ -0,0 +1,41 @@
+TRUNCATE TABLE 
+  audit_log_archive,
+  audit_log,
+  operation_log,
+  sys_operation_log,
+  sys_exception_log,
+  sys_login_log,
+  sys_user_message,
+  sys_role_permission,
+  user_role,
+  sys_permission,
+  sys_file,
+  sys_notice,
+  sys_user,
+  sys_role,
+  sys_menu,
+  sys_dict_data,
+  sys_dict_type,
+  sys_dictionary,
+  sys_config,
+  oauth2_client
+CASCADE;
+
+SELECT setval('sys_user_id_seq', 1, false);
+SELECT setval('sys_role_id_seq', 1, false);
+SELECT setval('sys_menu_id_seq', 1, false);
+SELECT setval('sys_permission_id_seq', 1, false);
+SELECT setval('sys_role_permission_id_seq', 1, false);
+SELECT setval('user_role_id_seq', 1, false);
+SELECT setval('sys_dict_type_id_seq', 1, false);
+SELECT setval('sys_dict_data_id_seq', 1, false);
+SELECT setval('sys_config_id_seq', 1, false);
+SELECT setval('sys_file_id_seq', 1, false);
+SELECT setval('sys_notice_id_seq', 1, false);
+SELECT setval('operation_log_id_seq', 1, false);
+SELECT setval('audit_log_id_seq', 1, false);
+SELECT setval('sys_login_log_id_seq', 1, false);
+SELECT setval('sys_exception_log_id_seq', 1, false);
+SELECT setval('sys_user_message_id_seq', 1, false);
+SELECT setval('oauth2_client_id_seq', 1, false);
+SELECT setval('audit_log_archive_id_seq', 1, false);