docs: CHANGELOG.md generation from conventional commits

[nanaf6203-bit]

Add a release workflow that consumes conventional commit messages and produces CHANGELOG.md. Use git-cliff or conventional-changelog. Wire up under .github/workflows/release.yml.

[ppaker119]

@ppaker119 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi maintainer. I am interested in this issue.

I have experience working across frontend, backend, smart contracts, and developer tooling, and I’m comfortable making targeted fixes and improvements in existing codebases. I’ll ensure the implementation is clean, tested, and aligned with the project requirements.

Thanks!

ℹ️ Repo Maintainers: To accept this application, review their application or assign @ppaker119 to this issue.

[Waffiyyi]

@Waffiyyi has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I would love to work on this issue. Please assign this to me.

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

[Dataguru-tech]

@Dataguru-tech has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi maintainer, I would like to work on this issue

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

[drips-wave]

Congratulations, @Dataguru-tech! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @Dataguru-tech: 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.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊