Contract: Add migration and compatibility testing for state schema updates

[Junirezz]

Summary

Verify upgrades do not corrupt or misread existing contract storage.

Problem

State schema changes can break compatibility without obvious failures.

Acceptance Criteria

• Test upgrade paths against existing saved state
• Validate storage compatibility and conversions
• Add regression checks for historic data
• Document migration steps and rollback expectations

[ginajones025-tech]

@ginajones025-tech has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

I’m ready to take this on and deliver. I understand the challenge, have the technical ability to solve it, and I’m prepared to turn the requirements into a clean, reliable PR. Let’s ship it.

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[Skype-F]

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

I can work on this issue please
Kindly assign

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[Glory123-gif-cyber]

@Glory123-gif-cyber has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Interested in working on this. I'll ensure the implementation is clean, tested, and aligned with project standards.

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[iheanyiezumaukom-ai]

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

Hello Maintainer I desire to work on this task..

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[KayMuna]

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

Hi maintainer, I’d love to work on this issue.

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[BigDella]

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

i will love to work on this issue

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[drips-wave]

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

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[drips-wave]

This issue has been completed by @BigDella as part of the Stellar Wave Program's 8th Wave 🥳

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