Metaplex SDKs (Umi, JS SDK)

Client libraries for interacting with Metaplex programs. Umi is the current framework-agnostic TypeScript SDK with plugins for each Metaplex program (Token Metadata, Bubblegum, Core). The older @metaplex-foundation/js SDK is deprecated in favor of Umi. Umi provides a unified interface for serialization, signing, and RPC across all Metaplex operations.