extractPostUuids(data) {
        return data
            .map((item) => {
                // Only use explicit post_uuid property
                return (item.post_uuid && item.post_uuid.trim() !== '') ? item.post_uuid : null;
            })
            .filter(Boolean);
    }
Extract post UUIDs from page data (internal method)
@param {Array<TopContentDataItem>} data - Raw page data
@returns {Array<string>} Array of post UUIDs