On the dev VM, 20-zsh.sh hands off to zsh via an exec in .bashrc
(chsh is blocked on the corp VM), and 40-node.sh's nvm installer only
patches .bashrc. The hand-off execs zsh before the nvm block runs and
.zshrc has no nvm init, so zsh sessions get neither node nor pnpm on
PATH on a fresh clone.
40-node.sh now appends an idempotent nvm-init block to .zshrc after
corepack enable (same marker pattern 20-zsh.sh uses for .bashrc).
Document the .zshrc patch in the bootstrap table.
Already-provisioned VMs: re-run 40-node.sh (marker-safe) or append the
block manually.
Julien Gautier