first commit

backend/internal/service/domain_constants.go

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+package service
+
+// Status constants
+const (
+	StatusActive   = "active"
+	StatusDisabled = "disabled"
+	StatusError    = "error"
+	StatusUnused   = "unused"
+	StatusUsed     = "used"
+	StatusExpired  = "expired"
+)
+
+// Role constants
+const (
+	RoleAdmin = "admin"
+	RoleUser  = "user"
+)
+
+// Platform constants
+const (
+	PlatformAnthropic   = "anthropic"
+	PlatformOpenAI      = "openai"
+	PlatformGemini      = "gemini"
+	PlatformAntigravity = "antigravity"
+)
+
+// Account type constants
+const (
+	AccountTypeOAuth      = "oauth"       // OAuth类型账号（full scope: profile + inference）
+	AccountTypeSetupToken = "setup-token" // Setup Token类型账号（inference only scope）
+	AccountTypeAPIKey     = "apikey"      // API Key类型账号
+)
+
+// Redeem type constants
+const (
+	RedeemTypeBalance      = "balance"
+	RedeemTypeConcurrency  = "concurrency"
+	RedeemTypeSubscription = "subscription"
+)
+
+// PromoCode status constants
+const (
+	PromoCodeStatusActive   = "active"
+	PromoCodeStatusDisabled = "disabled"
+)
+
+// Admin adjustment type constants
+const (
+	AdjustmentTypeAdminBalance     = "admin_balance"     // 管理员调整余额
+	AdjustmentTypeAdminConcurrency = "admin_concurrency" // 管理员调整并发数
+)
+
+// Group subscription type constants
+const (
+	SubscriptionTypeStandard     = "standard"     // 标准计费模式（按余额扣费）
+	SubscriptionTypeSubscription = "subscription" // 订阅模式（按限额控制）
+)
+
+// Subscription status constants
+const (
+	SubscriptionStatusActive    = "active"
+	SubscriptionStatusExpired   = "expired"
+	SubscriptionStatusSuspended = "suspended"
+)
+
+// LinuxDoConnectSyntheticEmailDomain 是 LinuxDo Connect 用户的合成邮箱后缀（RFC 保留域名）。
+const LinuxDoConnectSyntheticEmailDomain = "@linuxdo-connect.invalid"
+
+// Setting keys
+const (
+	// 注册设置
+	SettingKeyRegistrationEnabled = "registration_enabled" // 是否开放注册
+	SettingKeyEmailVerifyEnabled  = "email_verify_enabled" // 是否开启邮件验证
+
+	// 邮件服务设置
+	SettingKeySMTPHost     = "smtp_host"      // SMTP服务器地址
+	SettingKeySMTPPort     = "smtp_port"      // SMTP端口
+	SettingKeySMTPUsername = "smtp_username"  // SMTP用户名
+	SettingKeySMTPPassword = "smtp_password"  // SMTP密码（加密存储）
+	SettingKeySMTPFrom     = "smtp_from"      // 发件人地址
+	SettingKeySMTPFromName = "smtp_from_name" // 发件人名称
+	SettingKeySMTPUseTLS   = "smtp_use_tls"   // 是否使用TLS
+
+	// Cloudflare Turnstile 设置
+	SettingKeyTurnstileEnabled   = "turnstile_enabled"    // 是否启用 Turnstile 验证
+	SettingKeyTurnstileSiteKey   = "turnstile_site_key"   // Turnstile Site Key
+	SettingKeyTurnstileSecretKey = "turnstile_secret_key" // Turnstile Secret Key
+
+	// LinuxDo Connect OAuth 登录设置
+	SettingKeyLinuxDoConnectEnabled      = "linuxdo_connect_enabled"
+	SettingKeyLinuxDoConnectClientID     = "linuxdo_connect_client_id"
+	SettingKeyLinuxDoConnectClientSecret = "linuxdo_connect_client_secret"
+	SettingKeyLinuxDoConnectRedirectURL  = "linuxdo_connect_redirect_url"
+
+	// OEM设置
+	SettingKeySiteName     = "site_name"     // 网站名称
+	SettingKeySiteLogo     = "site_logo"     // 网站Logo (base64)
+	SettingKeySiteSubtitle = "site_subtitle" // 网站副标题
+	SettingKeyAPIBaseURL   = "api_base_url"  // API端点地址（用于客户端配置和导入）
+	SettingKeyContactInfo  = "contact_info"  // 客服联系方式
+	SettingKeyDocURL       = "doc_url"       // 文档链接
+	SettingKeyHomeContent  = "home_content"  // 首页内容（支持 Markdown/HTML，或 URL 作为 iframe src）
+
+	// 默认配置
+	SettingKeyDefaultConcurrency = "default_concurrency" // 新用户默认并发量
+	SettingKeyDefaultBalance     = "default_balance"     // 新用户默认余额
+
+	// 管理员 API Key
+	SettingKeyAdminAPIKey = "admin_api_key" // 全局管理员 API Key（用于外部系统集成）
+
+	// Gemini 配额策略（JSON）
+	SettingKeyGeminiQuotaPolicy = "gemini_quota_policy"
+
+	// Model fallback settings
+	SettingKeyEnableModelFallback      = "enable_model_fallback"
+	SettingKeyFallbackModelAnthropic   = "fallback_model_anthropic"
+	SettingKeyFallbackModelOpenAI      = "fallback_model_openai"
+	SettingKeyFallbackModelGemini      = "fallback_model_gemini"
+	SettingKeyFallbackModelAntigravity = "fallback_model_antigravity"
+
+	// Request identity patch (Claude -> Gemini systemInstruction injection)
+	SettingKeyEnableIdentityPatch = "enable_identity_patch"
+	SettingKeyIdentityPatchPrompt = "identity_patch_prompt"
+
+	// =========================
+	// Ops Monitoring (vNext)
+	// =========================
+
+	// SettingKeyOpsMonitoringEnabled is a DB-backed soft switch to enable/disable ops module at runtime.
+	SettingKeyOpsMonitoringEnabled = "ops_monitoring_enabled"
+
+	// SettingKeyOpsRealtimeMonitoringEnabled controls realtime features (e.g. WS/QPS push).
+	SettingKeyOpsRealtimeMonitoringEnabled = "ops_realtime_monitoring_enabled"
+
+	// SettingKeyOpsQueryModeDefault controls the default query mode for ops dashboard (auto/raw/preagg).
+	SettingKeyOpsQueryModeDefault = "ops_query_mode_default"
+
+	// SettingKeyOpsEmailNotificationConfig stores JSON config for ops email notifications.
+	SettingKeyOpsEmailNotificationConfig = "ops_email_notification_config"
+
+	// SettingKeyOpsAlertRuntimeSettings stores JSON config for ops alert evaluator runtime settings.
+	SettingKeyOpsAlertRuntimeSettings = "ops_alert_runtime_settings"
+
+	// SettingKeyOpsMetricsIntervalSeconds controls the ops metrics collector interval (>=60).
+	SettingKeyOpsMetricsIntervalSeconds = "ops_metrics_interval_seconds"
+
+	// SettingKeyOpsAdvancedSettings stores JSON config for ops advanced settings (data retention, aggregation).
+	SettingKeyOpsAdvancedSettings = "ops_advanced_settings"
+
+	// =========================
+	// Stream Timeout Handling
+	// =========================
+
+	// SettingKeyStreamTimeoutSettings stores JSON config for stream timeout handling.
+	SettingKeyStreamTimeoutSettings = "stream_timeout_settings"
+)
+
+// AdminAPIKeyPrefix is the prefix for admin API keys (distinct from user "sk-" keys).
+const AdminAPIKeyPrefix = "admin-"