Add unit tests for the creator fee split function distributing fees correctly between the protocol treasury and creator recipient

[Chucks1093]

Summary

The fee split function divides the total fee between the protocol treasury and the creator's fee recipient according to configured basis points. Unit tests should confirm the split is exact, that the two amounts sum to the total fee, and that no stroop is lost to rounding.

Scope

• Test a total fee of 1000 stroops split 70/30 returns 700 to protocol and 300 to creator
• Test a total fee of 1001 stroops split 70/30 — assert the remainder stroop goes to protocol (floor division)
• Test a split of 100/0 returns the full fee to protocol and 0 to creator
• Test a split of 0/100 returns 0 to protocol and the full fee to creator
• Assert protocol_amount + creator_amount always equals total_fee

Acceptance Criteria

• 70/30 split correct for even amounts
• Remainder stroop assigned to protocol on odd amounts
• 100/0 split assigns full fee to protocol
• 0/100 split assigns full fee to creator
• Sum of both amounts always equals total fee

ETA: 12 hours

---

Coordinate on Telegram

[devJaja]

Hello Maintainer, can I handle this issue please

[grantfox-oss]

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

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #710)
2. Your PR will be reviewed by the accesslayerorg maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

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

@devJaja's PR #712 was approved and merged by @Chucks1093.

🏆 @devJaja: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (742 total points). Track your full progress on GrantFox.

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