feat: sync deployed v1.0.0-rc.38-custom.42

Sync production source including routing, billing, Astra detection and public uptime. Update custom build instructions and license packaging.

relaykit/dto/user_settings.go

@@ -16,6 +16,7 @@ type UserSetting struct {
 	SidebarModules                   string  `json:"sidebar_modules,omitempty"`                      // SidebarModules 左侧边栏模块配置
 	BillingPreference                string  `json:"billing_preference,omitempty"`                   // BillingPreference 扣费策略（订阅/钱包）
 	Language                         string  `json:"language,omitempty"`                             // Language 用户语言偏好 (zh, en)
+	AstraCostNoticeAck               bool    `json:"astra_cost_notice_ack,omitempty"`                // Astra 费用说明已确认
 }
 
 var (