Add WASM build and Stellar CLI optimization step to contracts CI

[ogazboiz]

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Description

The contracts CI job runs cargo test but never builds the WASM artifact. The deployable binary could fail to compile while CI passes green.

What Needs to Happen

• Add wasm32-unknown-unknown to Rust toolchain step
• Add: cargo build --target wasm32-unknown-unknown --release
• Install stellar-cli and run stellar contract optimize on the output
• Upload optimized WASM as CI artifact
• CI fails if WASM compilation fails

Files

• .github/workflows/ (contracts job)

Acceptance Criteria

• WASM builds successfully in CI
• Optimized WASM uploaded as artifact
• CI fails if WASM compilation breaks

[0xElyte]

@0xElyte has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

I would love to resolve this

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

[Opeyemi01-del]

@Opeyemi01-del has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

I would love to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Opeyemi01-del to this issue.

[Francis6-git]

@Francis6-git has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

I'd love to work on this please.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Francis6-git to this issue.

[drips-wave]

Congratulations, @Francis6-git! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on April 29, 2026.

🧑‍💻 @Francis6-git: 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

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[ogazboiz]

Closing as duplicate — superseded by a newer issue with the same scope.

[drips-wave]

This issue has been completed by @Francis6-git as part of the Stellar Wave Program's 4th Wave 🥳

😎 @Francis6-git: 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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