Add slippage protection warning and override on large trade execution

[Chucks1093]

Summary

Detect when a pending trade will exceed the user's slippage tolerance and surface a warning with the estimated actual price impact, requiring explicit acknowledgement before execution.

Scope

• Slippage tolerance setting in user preferences (default 1%)
• Price impact calculation shown on trade form in real time
• Warning banner when impact exceeds tolerance threshold
• Override checkbox to acknowledge and proceed
• Transaction blocked until override checked when warning active

Acceptance Criteria

• Tolerance setting persists in user preferences
• Price impact calculated correctly on amount input change
• Warning banner appears when impact exceeds tolerance
• Override checkbox required before submit when warning active
• Transaction proceeds correctly after override acknowledged

ETA

12 hours

[guptakumarranjeet150]

Hello! I would like to work on this issue.

I would like to resolve this issue. Here is my proposed execution plan:

• Implementation: Implement Add slippage protection warning and override on large trade execution following the existing UI design system, accessibility standards, and responsive styling.
• Testing: Add component unit tests verifying user interactions and rendering states.

Ready to deliver a clean, tested PR within 12–24 hours. Please assign!

[sarah-obasi-analytics]

@sarah-obasi-analytics has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

hello maintainer, i'd love to work on this issue! please assign me

ℹ️ Repo Maintainers: To accept this application, review their application or assign @sarah-obasi-analytics to this issue.

[code-cannot-be-blank]

@code-cannot-be-blank has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

Hello, I've examined the issue requirements and the related areas of the project. I'm confident I can deliver a clean and scalable implementation.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @code-cannot-be-blank to this issue.

[Gojv-byte]

@Gojv-byte has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

Hello maintainer, please assign

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

[Ahbiz]

@Ahbiz has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

Hi, I’m interested in working on this issue. I’ve reviewed the details and would like to take responsibility for the implementation. Please assign it to me, and I’ll get started.

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

[drips-wave]

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

🧑‍💻 @Gojv-byte: 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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[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox!

@Gojv-byte's PR #1008 was approved and merged by @Chucks1093.

🏆 @Gojv-byte: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (258 total points). Track your full progress on GrantFox.

👏 Great work, @Gojv-byte! Keep contributing to accesslayerorg.

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This issue has been completed by @Gojv-byte as part of the Stellar Wave Program's 9th Wave 🥳

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