Product updates: public library, profiles, and contact refresh

Highlights: - Public library at /public/books with popular and paid filters. - Public home and public profiles for easier discovery. - Updated contact: info@arewapen.com and arewapen@gmail.com, phone/WhatsApp 09165777779. - Privacy and Terms refreshed with clearer language and data practices.

More to come—stay tuned for reading streaks and improved recommendations.