What task are you trying to do?

Remove actions/setup-node from jobs that only use bun, unless a step actually shells out to the node CLI.

Context

Split out of #54 (P3 polish). setup-node adds ~10-20s per job; for bun-only workflows this is pure overhead. Audit ci.yml, desktop-smoke.yml, e2e-artifacts.yml and keep setup-node only where the binary is actually invoked.

What would a good result look like?

• Bun-only jobs have no actions/setup-node step.
• Any retained usage has a one-line comment explaining which step needs node.

Audience

Maintainers.