D-21: Add Network Simulation and Testing Environment

[Nanle-code]

Create a local network simulation environment that mimics Stellar/Soroban behavior for testing contracts in controlled conditions with deterministic execution.

Proposed Changes:

• Implement local network simulator
• Add deterministic execution
• Create state snapshot/restore
• Implement time control for testing
• Add failure injection
• Create simulation scenarios

Acceptance Criteria:

• Local simulator works
• Deterministic execution
• State management
• Time control
• Failure injection
• Test scenarios

Priority: High
Complexity: Large
Labels: enhancement, testing, simulation

[BrightHeart23]

@BrightHeart23 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi Maintainer,

I'd like to work on this issue. I have experience building developer tooling and blockchain testing environments, and I can implement a deterministic local Stellar/Soroban simulation with state snapshot and restore, time control, failure injection, and reusable simulation scenarios to improve contract testing. Please assign this issue to me. Thank you!

ℹ️ Repo Maintainers: To accept this application, review their application or assign @BrightHeart23 to this issue.

[Enniwealth]

@Enniwealth has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi, i would love to work on this. Assign me this issue.

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

[drips-wave]

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

🧑‍💻 @Enniwealth: 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 awarded 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.

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