bug: use-batch-create has no unmount cleanup — batch keeps running after navigating away

[Austinaminu2]

Problem

`abortRef.current` (`hooks/use-batch-create.ts:45, 203-205`) is only set via the returned `cancel()` function. There's no `useEffect` cleanup that aborts automatically on unmount.

Location

`hooks/use-batch-create.ts:45, 203-205`

Impact

Navigating away mid-batch leaves the async loop running in the background, continuing to trigger wallet-signature popups for a screen the user can no longer see or cancel from.

Suggested fix

Add a `useEffect` cleanup that calls the same abort logic as `cancel()` on unmount.

[amina69]

@amina69 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

hi, let me work on this.

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[Jenks00]

@Jenks00 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi! I'd like to work on this issue because reliable cleanup of asynchronous processes is important for a smooth user experience in React applications. I have experience working with hooks, async workflows, and debugging lifecycle-related issues. I'll implement proper unmount cleanup for the batch process, preserve the existing cancellation behavior, and ensure users are not left with background operations after leaving the page.

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[coredevdave-cmd]

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

i can work on this

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

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[grantfox-oss]

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

@coredevdave-cmd's PR #335 was approved and merged by @Austinaminu2.

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👏 Great work, @coredevdave-cmd! Keep contributing to FlowwStar.

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

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