feat: add end-to-end lifecycle test for alien-gateway

[ryzen-xp]

📝 Description

Add test_full_identity_lifecycle covering: register -> set_root -> add_stellar_address -> transfer -> new_owner updates root. Verify SMT root, owner, and events at each step. Commit snapshot.

✅ Requirements

• Add test_full_identity_lifecycle covering: register -> set_root -> add_stellar_address -> transfer -> new_owner updates root
• Verify SMT root, owner, and events at each step
• Commit snapshot.

🎯 Acceptance Criteria

• Implementation matches the description above
• Tests added or updated to cover the new behaviour
• cargo test and cargo clippy pass with no warnings
• CI (Smart Contracts CI) passes

📁 Expected files to change

• gateway-contract/contracts/core_contract/src/lib.rs
• gateway-contract/contracts/core_contract/src/test.rs

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💬 Commit: feat: add end-to-end lifecycle test for alien-gateway
🌿 Branch: feat/add-end-to-end-lifecycle-test-for-alien-gateway | Priority: MEDIUM | Difficulty: ☕ one-coffee

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Type: Feature · Priority: MEDIUM · Difficulty: ☕ one-coffee · Track: Contract

[Chinonso-Peter]

@Chinonso-Peter has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

Can i work on this issue

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[Marvy247]

@Marvy247 has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

Can I Work On This Issue Please?

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Marvy247 to this issue.

[drips-wave]

Congratulations, @Chinonso-Peter! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on March 30, 2026.

🧑‍💻 @Chinonso-Peter: 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.

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[drips-wave]

This issue has been completed by @Chinonso-Peter as part of the Stellar Wave Program's 3rd Wave 🥳

😎 @Chinonso-Peter: 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.

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