CKB CCC — Signer Setup

Covers every way to get a working Signer instance: connecting a wallet in a React dApp, or creating a private-key signer in a Node.js backend. Both paths converge on the same Signer interface, so the rest of your code (building and sending transactions) is identical either way — see ckb-ccc-transactions for that part.

Package selection (connector-react vs shell) is covered in ckb-ccc-fundamentals — read that first if you haven't picked a package yet.