[bulk_payment] Misspelled event topic "rollbck" instead of "rollback"

[Wilfred007]

Description

The rollback event uses symbol_short!("rollbck"), a typo of "rollback". Off-chain indexers and the frontend's contract-error parsing match on event topic strings, so this typo is a small but real footgun for anyone wiring up event listeners expecting the correctly spelled topic.

Where

contracts/bulk_payment/src/lib.rs (~line 755)

Acceptance Criteria

• Fix the symbol to "rollback" (note: Soroban symbol_short! has a 9-character limit, so confirm it fits or pick an equally clear short symbol)
• Grep the frontend/backend for any code already matching on "rollbck" and update those too
• Add/adjust a test asserting the corrected topic

[leocagli]

Hi! I'd like to work on this. I'll fix the typo: rename the event topic from "rollbck" to "rollback". Simple one-character fix. Could I be assigned?

[leocagli]

Hi! I'd like to work on fixing the misspelled event topic — it's a straightforward string correction from "rollbck" to "rollback" in the event emit. Could you assign this to me? Thanks!

[AugistineCreates]

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

PLEASE ASSIGN

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[Timrossid]

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

Hi maintainer, I’ve reviewed this issue and I would love to work on this. I've worked on similar issues and I am confident that I will be able to resolve it neatly. I can have a PR ready for review soon.

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

[devonahi]

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

Hello maintainer, I can handle this issue.

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[drips-wave]

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

🧑‍💻 @devonahi: 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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