/**
 * Removes all null fields and empty objects from an object recursively.
 * Empty arrays are preserved as they carry semantic meaning (e.g., "no results found").
 * This ensures that data sent to agents doesn't include unnecessary empty values.
 *
 * @param obj - The object to sanitize
 * @returns A new object with all null fields and empty objects removed
 */
export declare function removeNullFields<T>(obj: T): T;
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