fix: 订阅模式登录验证、永久会员类型区分、动态代码HTTP返回值修复、侧边栏滚动位置保持

- 修复订阅模式登录时错误检查余额的问题
- 区分无限余额和永久订阅两种永久会员类型
- 修复动态代码HTTP请求返回值在JS中无法正确访问的问题
- 添加侧边栏滚动位置保持功能
- 移除developer角色相关代码，统一使用admin
- 添加缺失的i18n翻译key

backend/internal/router/router.go

@@ -6,7 +6,7 @@ import (
 	"verification-platform-backend/internal/middleware"
 	"verification-platform-backend/internal/router/agent"
 	"verification-platform-backend/internal/router/app"
-	"verification-platform-backend/internal/router/developer"
+	"verification-platform-backend/internal/router/admin"
 	"verification-platform-backend/internal/router/extension"
 	"verification-platform-backend/internal/router/frontend"
 	"verification-platform-backend/pkg/response"
@@ -32,9 +32,9 @@ func SetupRoutes(r *gin.Engine) {
 		devGroup := api.Group("/dev")
 		{
 			devGroup.Use(middleware.JWT())
-			devGroup.Use(middleware.DeveloperAuth())
-			developer.SetupRoutes(devGroup)
-			developer.SetupRoutesWithoutPackage(devGroup)
+			devGroup.Use(middleware.AdminAuth())
+			admin.SetupRoutes(devGroup)
+			admin.SetupRoutesWithoutPackage(devGroup)
 		}
 
 		agentGroup := api.Group("/agent")