refactor(backend): 重构项目结构，将模块代码移动到plugin目录

feat(backend): 添加数据库表创建和删除工具函数
fix(backend): 修复日志输出和Redis连接提示信息
style(frontend): 调整导航栏头像大小
perf(backend): 优化系统配置和字典数据缓存逻辑
chore(backend): 更新模板文件路径配置

frontend/src/layouts/components/NavBar/components/NavbarActions.vue

@@ -34,10 +34,10 @@
         <div class="user-profile">
           <div class="user-profile__avatar-wrapper">
             <template v-if="userStore.basicInfo.avatar">
-              <el-avatar size="default" :src="userStore.basicInfo.avatar" />
+              <el-avatar :size="30" :src="userStore.basicInfo.avatar" />
             </template>
             <template v-else>
-              <el-avatar size="default" icon="UserFilled" />
+              <el-avatar :size="30" icon="UserFilled" />
             </template>
             <span class="user-profile__online-indicator"></span>
           </div>