Frontend: Add donation tip feature

[Smartdevs17]

Problem

Users cannot send tips/donations.

Proposed Solution

Add tip functionality.

Acceptance Criteria

• Add tip button
• Configure tip amounts
• Process tip payment
• Show top tippers

Technical Notes

• Use existing payment flow

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This issue has been added to the Stellar Wave Program and is worth 200 Points.

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[5elc0uth]

@5elc0uth has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

I’d like to work on this because it adds a simple way for users to show support, while building on the existing payment flow to keep the experience smooth and familiar.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @5elc0uth to this issue.

[kingsleyobinwa1]

@kingsleyobinwa1 has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

I'll add a donation tip feature to this UI

ℹ️ Repo Maintainers: To accept this application, review their application or assign @kingsleyobinwa1 to this issue.

[drips-wave]

Congratulations, @kingsleyobinwa1! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on March 30, 2026.

🧑‍💻 @kingsleyobinwa1: 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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