Implement guild owner lookup in ContractClient

[Lakes41]

ContractClient.getGuildOwner is currently a stub. Implement the method so developers can fetch guild ownership data from the configured contract.

Suggested tasks

• Define the contract ABI or interface needed for owner lookup
• Use the configured rpcUrl and contract address
• Validate guildId
• Return the owner wallet address
• Handle missing provider configuration
• Add tests with mocked contract responses

Acceptance criteria

• getGuildOwner returns the owner address
• Invalid or missing config throws a clear SDK error
• The method is covered by tests

[leocagli]

This is right in my wheelhouse — please assign me to get started.

[GBOYEE]

Hey! I can work on this. I will implement getGuildOwner using the configured rpcUrl and contract address, validate guildId, return owner address, and add tests with mocked contract responses. PR incoming shortly.

[gloskull]

Hi, I’d love to work on this issue. I have 4 years of experience across backend, frontend, full-stack, and smart contract development. I understand the task clearly and can deliver a clean, efficient, well-tested solution on time, with strong focus on code quality and maintainability. My PR will be submitted in under 10 hours.

[GBOYEE]

Looks like this was already implemented — getGuildOwner is fully functional with JSON-RPC eth_call, address decoding, chain config resolution, and 15+ test cases covering validation, error paths, and batch operations. All 93 tests pass. Issue can be closed.

[GBOYEE]

The guild owner lookup is already implemented in ContractClient with full test coverage. This can be closed. Thanks!