Wrap async exit handler in try/catch to prevent potential hang

[mgoldsborough]

Context

From QA review of issue-37-cli-add-bundle-update-awareness branch.

Problem

In packages/cli/src/commands/packages/run.ts, the child.on("exit", async (code) => { ... }) handler awaits the update check promise before calling process.exit(). If the await Promise.race rejects unexpectedly, process.exit never fires and the process hangs. The 3-second timeout mitigates this, but a try/catch would be defensive.

Suggested Fix

child.on("exit", async (code) => {
  if (updateCheckPromise) {
    try {
      await Promise.race([updateCheckPromise, new Promise((r) => setTimeout(r, 3000))]);
    } catch {}
  }
  process.exit(code ?? 0);
});

Severity

Warning — low probability but easy fix.