Add CI note for Rollup optional dependency recovery

[emrekayat]

Goal

Document the known recovery path when Rollup optional native dependency installs fail during local or CI-like runs.

Scope

• Add a short troubleshooting note near quality gates or testing docs.
• Mention the symptom involving @rollup/rollup-*-gnu missing.
• Provide safe recovery steps: remove node_modules, reinstall with npm ci, and rerun build.
• Do not change the workflow unless documentation reveals a small obvious fix.

Acceptance criteria

• Docs include the Rollup optional dependency symptom.
• Docs include concise recovery commands.
• Docs do not suggest committing generated artifacts or lockfile churn.
• npm run format:check passes.

Notes

This is intended as documentation, not a CI redesign.

[Tekprecious]

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

I have experience for this and have reviewed the code; I can submit a PR within 24hrs.

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

[drips-wave]

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

🧑‍💻 @Tekprecious: 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 🌊