[FEATURE] Add dependency audit to CI (npm audit + cargo audit)

[ritik4ever]

Category: security / devops
Project area: .github/workflows/

Implementation:

• npm audit --audit-level=high for backend and frontend.
• cargo audit for contracts.
• Block merge on high/critical CVEs.
• Dependabot enabled.

Acceptance Criteria:

• Audit runs on every PR.
• High CVEs block merge.
• Dependabot PRs auto-labeled.

[kosisochukwu1234]

@kosisochukwu1234 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hello, I would love to take on this issue. I'm a software engineer with over 4 years experience. and i'm confident I can resolve this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @kosisochukwu1234 to this issue.

[Halisky]

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

I’d like to work on this issue because it combines dependency security, CI automation, and proactive vulnerability management. I have experience working with JavaScript/TypeScript projects, GitHub Actions, and Rust-based blockchain projects, and I can configure dependency audits for both the backend and frontend with npm audit, alongside cargo audit for the contracts. I’ll ensure high and critical vulnerabilities block merges, audits run consistently on every pull request, Dependabot is enabled with appropriate automatic labeling, and the workflow provides clear, actionable feedback when vulnerabilities are detected.

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

[drips-wave]

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

🧑‍💻 @Halisky: 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.

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