Validate User Inputs Across Services

[Abd-Standard]

Description
Strengthen input validation throughout the application to reduce unexpected behavior and improve security. Validation should occur before processing.

Acceptance Criteria
Invalid inputs are rejected.
Validation messages are meaningful.
Tests cover common validation failures.

[BigNathan1]

Hello maintainer, I would love to resolve this issue within few hours. I am a Full-Stack Dev with contributions to Oss projects. Please assign

[VeronicDev]

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

Good day maintainer I'd like to work on this pls assign.

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

[CollinsC1O]

@CollinsC1O has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would love to provide implementations to this issue and fully resolve it

ℹ️ Repo Maintainers: To accept this application, review their application or assign @CollinsC1O to this issue.

[drips-wave]

Congratulations, @CollinsC1O! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @CollinsC1O: 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.

🌊 Happy Wave 🌊

[grantfox-oss]

🦊 GrantFox — @CollinsC1O has been assigned to this issue as part of the Official Campaign | FWC26 campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #401)
2. Your PR will be reviewed by the Core-Foundry maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox!

@CollinsC1O's PR #455 was approved and merged by @Abd-Standard.

🏆 @CollinsC1O: You earned 40 FoxPoints for this contribution! Your current tier: Builder (1,052 total points). Track your full progress on GrantFox.

👏 Great work, @CollinsC1O! Keep contributing to Core-Foundry.