Validate Notification Payload Length

[Abd-Standard]

Description
Restrict notification payload size to prevent oversized data from being stored or processed.

Acceptance Criteria
Payload size is validated before storage.
Invalid payloads are rejected.
Maximum payload size is documented.

[ebubeb683-ship-it]

I'd like to work on this issue.

[Enemuo-debug]

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

Can I please work on this??

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[caxtonacollins]

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

Hi Maintainer! I'm a Full-Stack Engineer with experience building production-ready web applications and blockchain products. I've reviewed the issue and understand the requirements. I'd love to work on it and can submit a clean PR promptly. Please assign it to me.

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

[Dami24-hub]

@Dami24-hub has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

i will love to work on this issue

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[drips-wave]

Congratulations, @Dami24-hub! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @Dami24-hub: 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.

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[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign | FWC26 campaign!

@Dami24-hub's PR #420 was approved and merged by @Abd-Standard.

🏆 @Dami24-hub: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (341 total points). Track your full progress on GrantFox.

👏 Great work, @Dami24-hub! Keep contributing to Core-Foundry.

[drips-wave]

This issue has been completed by @Dami24-hub as part of the Stellar Wave Program's 7th Wave 🥳

😎 @Dami24-hub: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

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