User Profile

Retrieves a Snapchat user's public profile by handle, including identity, stories, and spotlight content. Returns userProfile with username, title, snapcodeImageUrl, subscriberCount, bio, and profilePictureUrl. Also includes highlightStoryMetadata with individual story snaps (mediaUrl, mediaType, thumbnailUrl) and spotlightStoryMetadata with video details and engagement stats (viewCount, shareCount, commentCount).