Add app version in footer

[kdid]

Summary

Adds a version indicator to the site footer, similar to how Meadow displays its version. The display very unobtrusive and is environment-aware to avoid showing links to releases that don't exist yet.

Changes

• Production: displays the version as a link to the GitHub release tag (e.g. v3.1.4 -> github.com/nulib/dc-nextjs/releases/tag/v3.1.4)
• Staging: displays the version as plain text with the short commit SHA linking to the commit on GitHub (e.g. v3.1.4 (staging abc1234))
• Dev: displays the version as plain text with the short commit SHA if available (e.g. v3.1.4 (DEV abc1234))
• Version is read from package.json; environment is read from the existing HONEYBADGER_ENV and HONEYBADGER_REVISION env vars already exposed via next.config.js

[bmquinn]

Could we move the env logic into a small app-level helper like lib/build-info.ts with a getBuildInfo() function? The helper could normalize the deployment cases: production gets a release tag link, staging gets the version plus linked short SHA, and every other env gets a non-production label plus the short SHA when available.

That would keep the Honeybadger-specific env names out of the footer and let the component render from the helper instead of deciding the behavior itself. Something like this maybe?

const buildInfo = getBuildInfo();

<FooterVersion as={buildInfo.href ? "a" : "span"} href={buildInfo.href}>
  {buildInfo.label}
  {buildInfo.sha && buildInfo.shaHref && (
    <>
      {" "}
      (<a href={buildInfo.shaHref}>{buildInfo.sha}</a>)
    </>
  )}
</FooterVersion>

[bmquinn]

Looks great 👍