[Backend] Implement Notification Payload Compression

[Abd-Standard]

Description

Reduce storage and transmission costs by compressing large notification payloads before processing.

Tasks
Compress supported payloads.
Decompress during retrieval.
Measure compression efficiency.
Add fallback handling.

Acceptance Criteria
Compression reduces payload size.
Retrieval restores original data.
Unsupported payloads are handled safely.

Contributors start work by running:
git checkout -b backend/payload-compression

[Menjay7]

Hi! I’m a full-stack developer with a strong blockchain background. I’d love to handle this issue and can deliver a clean, reliable solution. Kindly assign it to me.

[Menjay7]

Hi! I’m a full-stack developer with a strong blockchain background. I’d love to handle this issue and can deliver a clean, reliable solution. Kindly assign it to me.

[prodbydeco]

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

I would love to work on resolving this issue

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

[jaynomyaro]

Hi! I came across this issue and would love to work on it. I have experience with similar tasks and I'm confident I can investigate, implement a clean solution, and thoroughly test it before submitting a PR. If the issue is still open, I would appreciate it if you could assign it to me. Thank you!

[numdinkushi]

@numdinkushi 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

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

[Osuochasam]

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

Dear maintainer, pls assign this issue to me

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

[grantfox-oss]

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

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #308)
2. Your PR will be reviewed by the Core-Foundry maintainers

Good luck! Track your progress on GrantFox.

[drips-wave]

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

🧑‍💻 @Osuochasam: 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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