export interface ValidationRuleRow {
    id: string;
    name: string;
    description?: string;
    pattern: string;
}
/**
 * List all custom validation rules from the database.
 */
export declare function listCustomRules(): Promise<ValidationRuleRow[]>;
/**
 * Get a single custom validation rule by ID.
 */
export declare function getCustomRule(id: string): Promise<ValidationRuleRow | null>;
/**
 * Add a new custom validation rule.
 */
export declare function addCustomRule(rule: ValidationRuleRow): Promise<void>;
/**
 * Update an existing custom validation rule.
 */
export declare function updateCustomRule(rule: ValidationRuleRow): Promise<void>;
/**
 * Delete a custom validation rule by ID.
 */
export declare function deleteCustomRule(id: string): Promise<void>;