[Stellar] Add Friendbot helper for testnet wallet funding from the UI

[usmanimamu17-create]

Problem Statement

Users creating a fresh Stellar testnet wallet must navigate to Friendbot externally. UI helper would close the loop.

Acceptance Criteria

• "Fund testnet wallet" button on the wallet card.
• Triggers GET https://friendbot.stellar.org?addr=... via backend proxy.
• Toasts success/failure and refreshes balance.
• Network-gated: only visible when STELLAR_NETWORK === 'testnet'.

Difficulty / Effort

• Difficulty: easy
• Effort: ~3 hours

[Osuolale1]

@Osuolale1 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I have experience with React, Stellar, and wallet integrations. I’ll implement the testnet Friendbot helper, route requests through the backend proxy, refresh balances on success, and add tests for reliable behavior.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Osuolale1 to this issue.

[akinboyewaSamson]

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

Hi Maintainer,

I would love to be assigned to this issue.

I’m a Full-Stack Developer and I also actively explore blockchain development and smart contracts, which has strengthened my problem-solving skills and attention to code quality.

After reviewing the issue, I believe I can contribute effectively and deliver a well-tested solution within the expected standards of the project.

ETA: 6 hours

Thank you for your consideration.

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

[DanielCharis1]

@DanielCharis1 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

can i be assigned this

ℹ️ Repo Maintainers: To accept this application, review their application or assign @DanielCharis1 to this issue.

[drips-wave]

Congratulations, @DanielCharis1! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @DanielCharis1: 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.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[grantfox-oss]

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

@Penielka's PR #235 was approved and merged by @usmanimamu17-create.

🏆 @Penielka: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (414 total points). Track your full progress on GrantFox.

👏 Great work, @Penielka! Keep contributing to ApexChainx.

[grantfox-oss]

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

@DanielCharis1's PR #244 was approved and merged by @usmanimamu17-create.

🏆 @DanielCharis1: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (694 total points). Track your full progress on GrantFox.

👏 Great work, @DanielCharis1! Keep contributing to ApexChainx.