[Testing] Fuzz: Exchange rate math

[p3ris0n]

Epic: Yield-Bearing Fee Vaults
Bucket: Testing

📝 Description

Fuzz the share_price formula with extreme values.

🛠️ Implementation Guide

1. Proptest with u128::MAX.
2. Proptest with huge yield injections.

✅ Acceptance Criteria

• Code compiles and adheres to Soroban/Rust/TypeScript best practices.
• Unit tests cover both happy paths and expected error states.
• All CI/CD pipelines pass successfully.

[Opulencechuks]

@Opulencechuks has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

I am confident that I can implement this issue having worked on something similar in the past

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

[sojetunde8]

@sojetunde8 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

I'd like to work on this issue.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @sojetunde8 to this issue.

[AbuJulaybeeb]

@AbuJulaybeeb has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

hi maintainer, i am a Full-Stack and web3 Developer, with 4+ years of experience. I have carefully read and understand the description of this issue, and i would like to take on this issue

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

[adams813]

@adams813 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

GM GM Maintainer, pls can I work on this issue ? ETA - 12hrs

ℹ️ Repo Maintainers: To accept this application, review their application or assign @adams813 to this issue.

[drips-wave]

Congratulations, @adams813! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @adams813: 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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🌊 Happy Wave 🌊