merge: 正确合并 main 分支改动

合并 origin/main 最新改动，正确保留所有配置： - Ops 运维监控配置和功能 - LinuxDo Connect OAuth 配置 - Update 在线更新配置 - 优惠码功能 - 其他 main 分支新功能修复之前合并时错误删除 LinuxDo 和 Update 配置的问题。

merge: 正确合并 main 分支改动
合并 origin/main 最新改动，正确保留所有配置： - Ops 运维监控配置和功能 - LinuxDo Connect OAuth 配置 - Update 在线更新配置 - 优惠码功能 - 其他 main 分支新功能修复之前合并时错误删除 LinuxDo 和 Update 配置的问题。
645609d4 · IanShaw027 · fc4ea659 · 56fc2764 · 645609d4 · 645609d4
Commit 645609d4 authored Jan 11, 2026 by IanShaw027
--- a/backend/ent/user/where.go
+++ b/backend/ent/user/where.go
--- a/backend/ent/user_create.go
+++ b/backend/ent/user_create.go
--- a/backend/ent/user_query.go
+++ b/backend/ent/user_query.go
--- a/backend/ent/user_update.go
+++ b/backend/ent/user_update.go
--- a/backend/ent/userallowedgroup_query.go
+++ b/backend/ent/userallowedgroup_query.go
--- a/backend/ent/userattributedefinition_query.go
+++ b/backend/ent/userattributedefinition_query.go
--- a/backend/ent/userattributevalue_query.go
+++ b/backend/ent/userattributevalue_query.go
--- a/backend/ent/usersubscription_query.go
+++ b/backend/ent/usersubscription_query.go
--- a/backend/internal/config/config.go
+++ b/backend/internal/config/config.go
--- a/backend/internal/handler/admin/promo_handler.go
+++ b/backend/internal/handler/admin/promo_handler.go
--- a/backend/internal/handler/admin/setting_handler.go
+++ b/backend/internal/handler/admin/setting_handler.go
--- a/backend/internal/handler/auth_handler.go
+++ b/backend/internal/handler/auth_handler.go
--- a/backend/internal/handler/dto/mappers.go
+++ b/backend/internal/handler/dto/mappers.go
--- a/backend/internal/handler/dto/settings.go
+++ b/backend/internal/handler/dto/settings.go
--- a/backend/internal/handler/dto/types.go
+++ b/backend/internal/handler/dto/types.go
--- a/backend/internal/handler/handler.go
+++ b/backend/internal/handler/handler.go
@@ -16,6 +16,7 @@ type AdminHandlers struct {
 	AntigravityOAuth *admin.AntigravityOAuthHandler
 	Proxy            *admin.ProxyHandler
 	Redeem           *admin.RedeemHandler
+	Promo            *admin.PromoHandler
 	Setting          *admin.SettingHandler
 	Ops              *admin.OpsHandler
 	System           *admin.SystemHandler

--- a/backend/internal/handler/setting_handler.go
+++ b/backend/internal/handler/setting_handler.go
--- a/backend/internal/handler/wire.go
+++ b/backend/internal/handler/wire.go
--- a/backend/internal/middleware/rate_limiter.go
+++ b/backend/internal/middleware/rate_limiter.go
--- a/backend/internal/pkg/ctxkey/ctxkey.go
+++ b/backend/internal/pkg/ctxkey/ctxkey.go