feat: implement contract version and capability discovery for clients

[greatest0fallt1me]

Description:

Expose contract version (e.g., semver string) and optional capability flags (e.g., supports_batch_bet, supports_multi_outcome) so that clients can adapt.

Requirements and Context:

• Must be secure, tested, and documented
• Should add version() -> String (or similar) returning e.g. "1.2.0"
• Optional: add capabilities() -> Vec<Symbol> or struct listing supported features
• Should be read-only and gas-cheap
• Should document versioning policy and capability list
• Must not change business logic

Suggested Execution:

1. Fork the repo and create a branch

   git checkout -b feature/version-capability-discovery

2. Implement changes

   • Write contract: src/lib.rs (add version, optionally capabilities)
   • Add version constant or module; add documentation and NatSpec-style comments

3. Test and commit

   • Run tests; cover version and capabilities return correct values
   • Include test output

Example Commit Message:

feat: implement contract version and capability discovery for clients

Guidelines:

• Minimum 95 percent test coverage
• Clear documentation
• Timeframe: 24 hours

[drips-wave]

This issue has been added to the Stellar Wave Program and is worth 200 Points.

🧑‍💻 Interested in contributing? Apply to work on this issue on Drips Wave, earn points, and receive rewards.

Warning

Only applications submitted via the apply link above will be considered. Please do not apply by commenting on the issue or opening a PR directly.

🤠 Repo maintainers: You can manage this issue's Points and Complexity on your Maintainer Dashboard here. Please keep an eye on applications and respond quickly 💙

ℹ️ Learn more about Drips Wave

[Spagero763]

@Spagero763 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

i will like to work on it

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Spagero763 to this issue.

[drips-wave]

Congratulations, @Spagero763! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @Spagero763: 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 issued 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 🌊

[Hallab7]

@Hallab7 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

i would like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Hallab7 to this issue.

[Yunusabdul38]

@Yunusabdul38 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hi, I am a full stack developer and will love to work on this

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Yunusabdul38 to this issue.

[Jagadeeshftw]

@Jagadeeshftw has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hi, I’d love to take on this issue! With my expertise in Rust, Stellar, and smart contract development, I can implement a clean and efficient solution.

🚀 Why Me?

• Proven Blockchain Experience – Hands-on work with Stellar, Solidity, and Rust, building secure and optimized smart contracts.
• Open Source Contributor – Actively contributed to 50+ open-source projects, showcasing adaptability and collaboration.
• Efficient & Reliable – I deliver high-quality, production-ready solutions quickly, ensuring security and scalability.

⏱ Timeline

I estimate completing this within 24 hours. Let me know if I can proceed!

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

[ryzen-xp]

@ryzen-xp has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hi maintainers 👋
I’m a blockchain developer with strong expertise in Stellar, Rust,TS and Stellar SDK integrations. I’ve worked on multiple Stellar-based smart contract and backend systems.

I understand the scope of this issue and can deliver a reliable, production-quality solution with proper tests and documentation.
Plz assign me !!

ETA: 4 hours

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