[Testing] Expand auth flow tests

[GoSTEAN]

Description

Auth tests exist but may need expansion for edge cases.

File: backend/tests/auth.integration.test.ts

Acceptance Criteria

• Test nonce generation + expiry
• Test valid/invalid signature login
• Test token refresh + rotation
• Test logout + session cleanup
• Test concurrent session limits

Priority

🟠 P1 — High

[drips-wave]

This issue has been added to the Stellar Wave Program and is worth 200 Points.

🧑‍💻 Interested in contributing? Apply to work on this issue on Drips Wave, earn points, and receive rewards.

Warning

Only applications submitted via the apply link above will be considered. Please do not apply by commenting on the issue or opening a PR directly.

🤠 Repo maintainers: You can manage this issue's Points and Complexity on your Maintainer Dashboard here. Please keep an eye on applications and respond quickly 💙

ℹ️ Learn more about Drips Wave

[morelucks]

@morelucks has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hello,

I’m a smart contract and full-stack developer interested in contributing to this issue. I’m an experienced contributor on OnlyDust and participated in Drips Wave 1, with hands-on experience in Rust, Soroban, Cairo, Solidity, and TypeScript.

I’m passionate about building secure and scalable blockchain solutions, with a strong focus on writing clean, maintainable code. Based on the scope of this issue, I’m confident I can deliver a complete solution within 24 hours of assignment.

I would appreciate the opportunity to contribute and help move this forward.

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

[Samaro1]

@Samaro1 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

GM boss, would like to work on this issue, PR in 12 hours tops

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Samaro1 to this issue.

[limitlxx]

@limitlxx has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

can you assign this issue to me

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

[Ndifreke000]

@Ndifreke000 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

can i get this issue??

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Ndifreke000 to this issue.

[drips-wave]

Congratulations, @Ndifreke000! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @Ndifreke000: 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 issued 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 🌊