Add regression test for holder count unchanged after a failed buy due to supply cap exceeded

[Chucks1093]

Summary

When a buy reverts because it would exceed the creator's supply cap, the holder count must remain unchanged. A new wallet that did not previously hold keys should not be added to the holder count just because a buy attempt was made and reverted.

Scope

• Register a creator with a supply cap of 10
• Buy 10 keys to reach the cap with one wallet
• Attempt a buy from a second wallet and assert it reverts with SupplyCapExceeded
• Assert holder count is still 1 (only the first wallet)

Acceptance Criteria

• Holder count unchanged after failed buy due to supply cap
• Second wallet not added to holders after failed attempt
• Total supply unchanged after the revert

ETA: 12 hours

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Coordinate on Telegram

[kodinaka30-ship-it]

@kodinaka30-ship-it has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hello Maintainer,
I would like to work on this issue because I have experience writing regression tests for revert scenarios in smart contracts. I can implement the full test sequence registering a creator with a supply cap of 10, filling it with one wallet, asserting the second wallet's buy reverts with SupplyCapExceeded, and verifying holder count and total supply remain unchanged.
Please kindly assign.

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[Kaycee276]

@Kaycee276 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi maintainer, can i work on this issue?

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[harystyleseze]

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

Hi, I would like to work on this

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[gloskull]

Hi, I’d love to work on this issue. I have 4 years of experience across backend, frontend, full-stack, and smart contract development. I understand the task clearly and can deliver a clean, efficient, well-tested solution on time, with strong focus on code quality and maintainability. My PR will be submitted in under 10 hours.

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[grantfox-oss]

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

Next steps:

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[grantfox-oss]

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

@harystyleseze's PR #494 was approved and merged by @Chucks1093.

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👏 Great work, @harystyleseze! Keep contributing to accesslayerorg.

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