[FRONTEND] Build token send UI inside chat

[codebestia]

Add a payment button (coin icon) in the MessageInput area. Clicking it opens a popover with: token amount input, recipient (pre-filled from conversation), and a confirm button. On confirm: call the token_transfer Soroban contract via Freighter, then post the transaction hash as a special message type in the chat (e.g. { type: 'transfer', amount, txHash }). Render transfer messages with a distinct card style.

Acceptance criteria:

• Amount must be > 0
• Freighter signing flow triggered on confirm
• Transfer card appears in thread with amount, token, and explorer link

[V1ctor-o]

@V1ctor-o has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I have reviewed the issue and understand what needs to be done. Please assign this issue to me if it's available. Thank you.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @V1ctor-o to this issue.

[hartz0]

@hartz0 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I'd love to solve this issue please,

ℹ️ Repo Maintainers: To accept this application, review their application or assign @hartz0 to this issue.

[drips-wave]

Congratulations, @V1ctor-o! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @V1ctor-o: 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

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