Implement SDK method for `hasVoted`

[Levi-Ojukwu]

Description:

The SDK needs a method to check if an address has voted on a proposal.

Why it matters: Voting UIs need to show vote status.

Acceptance Criteria:

• Create hasVoted(voter, proposalId) view method
• Add tests

Relevant Files: contracts/iln_governance/src/lib.rs:879-883, sdk/src/methods/governance.ts

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[abdesigns1]

@abdesigns1 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi team! I’d like to work on this issue.

Why I’d like to work on this:
A seamless voting UX relies on instant and accurate state feedback. Adding hasVoted(voter, proposalId) directly to the SDK will eliminate duplicate logic across frontend integrations and ensure UIs can cleanly query and reflect vote status.

Relevant Experience:

Smart Contract & SDK Integration: Strong experience working with Rust-based smart contracts (Soroban/Stellar) and building type-safe TypeScript SDK wrappers for blockchain interaction.

State Management & Data Parsing: Skilled in mapping contract storage structures into client-facing view methods, managing ScVal serialization/deserialization, and handling RPC simulation queries efficiently.

Testing Rigor: Hands-on experience writing contract tests in Rust (cargo test) and SDK unit tests in TypeScript/Jest to ensure accurate return values and edge-case handling (e.g., non-existent proposals or non-voters).

Implementation Plan:

Verify/implement the read-only has_voted view function in contracts/iln_governance/src/lib.rs.

Implement hasVoted(voter: string, proposalId: number | bigint): Promise in sdk/src/methods/governance.ts.

Add unit test coverage for both Rust contract logic and TypeScript SDK invocations.

Looking forward to being assigned!

ℹ️ Repo Maintainers: To accept this application, review their application or assign @abdesigns1 to this issue.

[CodedMumu]

@CodedMumu has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Dear maintainer,

I would love to take on this issue. I have solid experience working with smart contracts, state validation, and writing robust test suites, and frontensd and I am confident I can implement this cleanly and submit a clean, mergeable PR.

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

[gotethry]

@gotethry has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi maintainer I have thoroughly read the description to this issue and I can resolve this according to the description required ensuring it meet all the acceptance criteria

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

[drips-wave]

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

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[drips-wave]

This issue has been completed by @gotethry as part of the Stellar Wave Program's 7th Wave 🥳

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