Meshmell CLI

Set up Meshmell CLI for me. Read and schema-validate https://meshmell.com/cli/agent-bootstrap.json. Before running its installer, verify that Node.js satisfies the declared minimum version and that npm is available. If either prerequisite is missing, choose an actively supported Node.js LTS release that satisfies the minimum and includes npm, using nodejs.org or a trusted operating-system package manager. Show me the proposed source, version, and commands, then pause for my approval before installing software or elevating privileges. Never run an unverified remote install script or disable signature or checksum verification. After approval, install the prerequisite, refresh PATH if needed, verify node --version and npm --version, and continue. Use only the descriptor's canonical same-origin Meshmell installer and run it with structured JSON output. If it returns INSTALL_PREREQUISITE, resolve the declared Node.js/npm requirement under the same approval rule and rerun the installer. Then follow only trusted command data returned by meshmell --json setup --agent. Pause and ask me before account authorization, privilege elevation, plaintext credential storage, unsafe networking, expanded scopes, updates, or destructive actions. Never request or display a token, refresh credential, resumable upload URI, or signed URL.