Add an engines field to package.json

[grantfox-oss]

package.json has no engines field, so there's nothing stopping (or even warning) a contributor from running this on an incompatible Node version — relevant for a project onboarding many external GrantFox contributors who will each have their own local Node setup.

Scope: Add an engines.node field matching whatever version this project is actually built/tested against (check .github/workflows/ and any Docker/CI config for the Node version already in use elsewhere, so this doesn't introduce a new, undocumented requirement — it should just make an existing implicit one explicit).

Acceptance criteria:

engines.node is set to match the version already used in CI
npm install on that Node version proceeds without a new warning

[angelraph]

Hi, I’d like to take on this issue.

I’m a software engineer with experience working across JavaScript/TypeScript projects, development environments, CI workflows, and dependency configuration.

I’ll first verify the Node.js version currently used by the project’s GitHub Actions and Docker/CI configuration, then add the matching "engines.node" requirement to "package.json". I’ll make sure this reflects the project’s existing environment rather than introducing a new version requirement.

After the change, I’ll run the relevant checks and verify that "npm install" works cleanly with the declared Node version.

I’ll keep the PR focused, minimal, and limited to the scope of this issue.

[grantfox-oss]

🦊 GrantFox — @angelraph has been assigned to this issue as part of the Third Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #425)
2. Your PR will be reviewed by the Open-audit-foundation maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox!

@angelraph's PR #432 was approved and merged by @Osuochasam.

🏆 @angelraph: You earned 35 FoxPoints for this contribution! Your current tier: Builder (1,024 total points). Track your full progress on GrantFox.

👏 Great work, @angelraph! Keep contributing to Open-audit-foundation.