Send a downloaded book file to a Kindle via the zlib CLI, and walk the user through the one-time SMTP/Amazon setup it needs. Use when the user wants to deliver an ebook to their Kindle, configure Kindle delivery, or fix a failed Kindle send.
Search and download books from Z-Library. Wraps the zlib CLI to search by title/author, download by book ID, browse download history, and check daily download limits. Use when the user wants to find, download, or browse books from Z-Library. For sending books to Kindle, use the zlib:kindle skill instead.