D-39: Add Contract Storage Migration Tool

[Nanle-code]

Create a tool for migrating contract storage between versions, handling data transformation, and ensuring data integrity during upgrades.

Proposed Changes:

• Implement storage migration engine
• Add data transformation tools
• Create migration validation
• Implement rollback support
• Add migration testing
• Create migration documentation

Acceptance Criteria:

• Migration engine works
• Data transformation
• Migration validation
• Rollback support
• Migration testing
• Documentation

Priority: Medium
Complexity: Medium
Labels: enhancement, migration, storage

[Jenola344]

@Jenola344 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I’d like to work on this issue. I have experience building migration frameworks, data validation workflows, rollback mechanisms, and comprehensive testing for smart contract storage upgrades.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Jenola344 to this issue.

[drips-wave]

Congratulations, @Jenola344! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @Jenola344: 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 🌊