Add distribution-level smoke tests for package exports

[Lakes41]

Summary

Add tests that verify the built package can be consumed through its declared ESM, CommonJS, and TypeScript declaration exports.

Current Behaviour

Tests import from src, while package.json publishes dist through main, module, types, and exports. This leaves a gap where source tests can pass but package consumers still receive broken exports.

Expected Behaviour

CI should confirm that built package outputs are importable by downstream consumers.

Suggested Implementation

Add a smoke test script that runs after pnpm build. It should verify ESM import, CommonJS require, and TypeScript type resolution against the built package.

Files or Areas Likely Affected

• package.json
• tsup.config.ts
• tests/
• .github/workflows/ci.yml

Acceptance Criteria

• A build smoke test imports the package using ESM
• A build smoke test requires the package using CommonJS
• A TypeScript compile check resolves dist/index.d.ts
• CI runs the smoke test after pnpm build
• The test fails clearly if package exports are misconfigured

Additional Notes

This should test the published package shape, not only internal source imports.

[OlaGreat]

I'd like to take this on.

I'm a software engineer with experience in blockchain, backend systems, and open-source contribution. I've reviewed the issue and I'm confident I can deliver a clean implementation with tests covering the acceptance criteria. Happy to follow the project's existing conventions.

[OlaGreat]

I'd like to take this on.

I'm a software engineer with experience in blockchain, backend systems, and open-source contribution. I've reviewed the issue and I'm confident I can deliver a clean implementation with tests covering the acceptance criteria. Happy to follow the project's existing conventions.

[Swayymalcolm99]

Hey maintainer, I can work on this

[shadrach68]

Hi maintainer, I am confident that I can resolve this issue before 24hrs if assigned to me because I have the technical expertise to resolve it.

[shadrach68]

Hi maintainer, I am confident that I can resolve this issue before 24hrs if assigned to me because I have the technical expertise to resolve it.

[grantfox-oss]

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

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #23)
2. Your PR will be reviewed by the Adamantine-guild maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign campaign!

@OlaGreat's PR #37 was approved and merged by @Lakes41.

🏆 @OlaGreat: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (83 total points). Track your full progress on GrantFox.

👏 Great work, @OlaGreat! Keep contributing to Adamantine-guild.