新功能(#89): 增强邀请列表接口 + 新增全局邀请管理接口

P01: GET /v1/admin/user/invite/list 增加 search/enable/user_id_search
筛选参数，响应新增 order_count/has_purchased/inviter_commission/
inviter_gift_days/invitee_gift_days 权益字段。

P02: 新增 GET /v1/admin/invite/list 全局邀请管理接口，支持按
邀请人/被邀请人筛选和搜索，返回邀请关系及权益聚合数据。

共用 QueryBenefits 批量查询防 N+1，分页上限 100。

Co-authored-by: multica-agent <github@multica.ai>

internal/handler/routes.go

@@ -13,6 +13,7 @@ import (
 	adminCoupon "github.com/perfect-panel/server/internal/handler/admin/coupon"
 	adminDocument "github.com/perfect-panel/server/internal/handler/admin/document"
 	adminGroup "github.com/perfect-panel/server/internal/handler/admin/group"
+	adminInvite "github.com/perfect-panel/server/internal/handler/admin/invite"
 	adminLog "github.com/perfect-panel/server/internal/handler/admin/log"
 	adminMarketing "github.com/perfect-panel/server/internal/handler/admin/marketing"
 	adminOrder "github.com/perfect-panel/server/internal/handler/admin/order"
@@ -194,6 +195,14 @@ func RegisterHandlers(router *gin.Engine, serverCtx *svc.ServiceContext) {
 		adminDocumentGroupRouter.GET("/list", adminDocument.GetDocumentListHandler(serverCtx))
 	}
 
+	adminInviteGroupRouter := router.Group("/v1/admin/invite")
+	adminInviteGroupRouter.Use(middleware.AuthMiddleware(serverCtx))
+
+	{
+		// Get invite manage list
+		adminInviteGroupRouter.GET("/list", adminInvite.GetInviteManageListHandler(serverCtx))
+	}
+
 	adminGroupGroupRouter := router.Group("/v1/admin/group")
 	adminGroupGroupRouter.Use(middleware.AuthMiddleware(serverCtx))