[Golden-Pigeon]

Fixes #20.

Original problem

On a fresh remote host without Node, the generated bootstrap exited with status 2 before the automatic Node install could run. nodePathPrelude() ran an unguarded ls over the nvm version glob under set -euo pipefail; with no nvm installation, the glob did not match, ls exited non-zero, and set -e terminated the script.

Change

• Treat the nvm probe as best-effort (|| true) so a missing nvm directory cannot abort the bootstrap.
• Add a POSIX-shell regression test that executes the generated prelude with a temporary HOME containing no nvm and a PATH containing no node, and asserts the script continues.

Fixed during this change

• None.

Resolved

• Remote provisioning on hosts without Node/nvm no longer exits before installing the configured Node version.
• Added regression coverage for the no-nvm prelude path.

Unresolved

• None within the scope of Remote provisioning fails on fresh hosts without Node (bootstrap exits 2 in nodePathPrelude) #20.

Testing

• pnpm --filter @dsh-remote/installer test (20/20)
• pnpm --filter @dsh-remote/installer typecheck
• pnpm --filter @dsh-remote/installer build
• Real provisioning E2E against an isolated Ubuntu 24.04 container with no Node/nvm: the fixed installer uploaded the agent and ran the full bootstrap; Node 22.19.0 was auto-installed, DSH 0.2.2-rc.1 and the remote agent were installed, dsh web started, and the agent state reached ready.