No CONTRIBUTING.md documenting build/test/PR conventions

[chonilius]

This repository's entire product premise (per README.md's opening paragraph) is external contributors doing paid work via GitHub issues-as-bounties. That makes the absence of a CONTRIBUTING.md — covering how to run make build/make test, the cargo fmt/cargo clippy -D warnings gate CI enforces, expectations for test coverage on new code, and how PRs should reference the issue(s) they close — a more consequential gap here than in a typical internal-only repo. New contributors currently have to reverse-engineer conventions from .github/workflows/ci.yml and existing PR history rather than reading a single onboarding document.

[Genesis000001]

@Genesis000001 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Assign for quick delivery please

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[SaviourBosan]

@SaviourBosan has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Good day maintainer, I would love to work on this issue. I am a software engineer with 2 years experience. I have read and understood the issue and its needed criteria, and I'm sure I can solve. Please consider my application and assign me this issue to solve.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @SaviourBosan to this issue.

[rikkk-j]

@rikkk-j has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

hello miantainer, i would like to work on this

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[drips-wave]

Congratulations, @rikkk-j! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @rikkk-j: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

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