Implement transaction confirmation flow with Stellar Explorer link

[ogazboiz]

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Description

There is no transaction confirmation UI. After Freighter signs a transaction, users see nothing — no pending state, no confirmation, no explorer link. This is confusing for blockchain newcomers.

What Needs to Happen

• Show transaction lifecycle: idle → signing → submitted → confirming → confirmed | failed
• On submitted: show transaction hash with a link to Stellar Expert/Explorer
• Poll GET /v1/streams/{id} every 2 seconds to detect indexer confirmation
• On confirmed: show success state and update UI
• On failed: show error with the Stellar error code and a retry button
• Build a reusable <TransactionTracker /> component

Files

• frontend/src/components/TransactionTracker.tsx (create)

Acceptance Criteria

• All 5 states render correctly
• Explorer link shown after submission
• Reusable across stream creation, withdraw, top-up, cancel

[khanavi272-spec]

@khanavi272-spec has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

I would like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @khanavi272-spec to this issue.

[mikevill20]

@mikevill20 has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Hello maintainer, please assign this issue to me. Thanks

ℹ️ Repo Maintainers: To accept this application, review their application or assign @mikevill20 to this issue.

[Smartdevs17]

@Smartdevs17 has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

can i work on this?

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Smartdevs17 to this issue.

[drips-wave]

Congratulations, @Smartdevs17! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on April 29, 2026.

🧑‍💻 @Smartdevs17: 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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[drips-wave]

This issue has been completed by @Smartdevs17 as part of the Stellar Wave Program's 4th Wave 🥳

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