/**
 * Simple prompt template loader
 * Provides basic variable substitution for external prompt files
 */
export declare class PromptTemplate {
    private readonly promptsDir;
    constructor();
    /**
     * Load and render a prompt template with variables
     * @param templateName Name of the template file (without .txt extension)
     * @param variables Object containing variable values for substitution
     * @returns Rendered prompt string
     */
    render(templateName: string, variables: Record<string, any>): string;
    /**
     * Check if a template exists
     * @param templateName Name of the template file (without .txt extension)
     * @returns True if template exists
     */
    exists(templateName: string): boolean;
}