Backend: Add Smart Contract Upgrade Health Check and Validation Service

[Smartdevs17]

Context

Smart contract upgrades carry significant risk. A faulty upgrade can lock funds, break integrations, or introduce vulnerabilities.

Current Limitation/Problem

Contract upgrades are deployed with manual verification. There is no automated pre-deployment health check, state compatibility validation, or post-deployment smoke test suite.

Expected Outcome

An automated upgrade safety service that validates contract upgrades before deployment, checks storage layout compatibility, simulates upgrade, and runs smoke tests post-deployment.

Acceptance Criteria

• Storage layout diff checker: detect variable reordering, type changes, slot collisions
• Simulate upgrade on a fork (Hardhat mainnet fork / Soroban sandbox)
• Run automated test suite against upgraded contract on fork
• Check admin/key permissions are preserved after upgrade
• Verify proxy admin ownership is not accidentally renounced
• Post-deployment: verify implementation address, run health check transactions
• Rollback capability if smoke tests fail
• Dashboard showing upgrade history and safety check results

Technical Scope

• backend/src/services/contracts/upgrade-validator.ts - upgrade validation
• Hardhat mainnet forking for EVM simulation
• Soroban sandbox for Stellar simulation
• Prisma: ContractUpgrade, UpgradeValidationReport models
• CI integration: required before deployment to mainnet
• Edge cases: immutable variables, constructor args in upgrades, beacon proxies

[idrisososanwo]

@idrisososanwo 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 @idrisososanwo to this issue.

[code-0-stella]

@code-0-stella has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi, I'd like to work on this issue.

I've gone through the requirements, understand the problem, and have the skills needed to implement a solution.

Could you please assign it to me?

ℹ️ Repo Maintainers: To accept this application, review their application or assign @code-0-stella to this issue.

[Bigmehelen]

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

I would like to work on this issue, please assign me to this issue

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

[thefifthdev]

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

I have full stack experience, I can work on this

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

[devsimze]

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

Hi I'd like to work on this issue

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

[drips-wave]

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

🧑‍💻 @devsimze: 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 🌊

[drips-wave]

This issue has been completed by @devsimze as part of the Stellar Wave Program's 6th Wave 🥳

😎 @devsimze: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

🧑‍💻 Repo maintainers: How'd the contributor do? Leave a review to share your experience working with them.