feat(recommendation): 实现推荐客户管理全流程功能

- 新增推荐记录、推荐人信息、推荐费结算实体及数据库表结构
- 实现推荐记录小程序端接口，包括新增报备、获取推荐码、查询我的推荐及统计
- 实现后台管理端推荐记录分页查询、确认有效、作废、结算及批量结算接口
- 实现推荐人信息查询及推荐统计汇总逻辑
- 实现推荐记录导出功能，支持导出推荐详情数据
- 完成推荐状态变更时推荐人统计数据同步更新
- 添加相关Mapper接口和Service接口及实现
- 使用MyBatis Plus分页插件支持分页查询
- 集成Spring Security权限校验和操作日志注解
- 优化推荐码生成和唯一性校验机制

.workbuddy/expert-history.json

@@ -0,0 +1,17 @@
+{
+  "version": 2,
+  "sessions": {
+    "8b8cdf8cb3404efeac18615f9f419cb1": [
+      {
+        "expertId": "SeniorDeveloper",
+        "name": "吴八哥",
+        "profession": "高级开发工程师",
+        "avatarUrl": "https://acc-1258344699.cos.accelerate.myqcloud.com/workbuddy/experts/avatars/02-Engineering/SeniorDeveloper/SeniorDeveloper.png",
+        "promptUrl": "https://acc-1258344699.cos.accelerate.myqcloud.com/workbuddy/experts/experts/02-Engineering/SeniorDeveloper/SeniorDeveloper_zh.md",
+        "usedAt": 1776323986694,
+        "industryId": "02-Engineering"
+      }
+    ]
+  },
+  "lastUpdated": 1776324781452
+}