export declare function isLiveTestEnabled(extraEnvVars?: readonly string[], env?: NodeJS.ProcessEnv): boolean; export declare function isLiveProfileKeyModeEnabled(env?: NodeJS.ProcessEnv): boolean; export declare function createSingleUserPromptMessage(content?: string): { role: "user"; content: string; timestamp: number; }[]; export declare function extractNonEmptyAssistantText(content: Array<{ type?: string; text?: string; }>): string;