Build a complete send and receive payment flow so users can initiate transfers with validation and clear confirmation feedback.

[memplethee-lab]

Issue Description

Build a complete send and receive payment flow so users can initiate transfers with validation and clear confirmation feedback.

Problem

The wallet experience lacks a polished transaction flow, which makes it difficult for users to confidently send or receive funds.

Scope

• Add a payment form for entering recipient address and amount.
• Validate required fields, supported amounts, and basic recipient format.
• Show success, pending, and failure states clearly after submission.

Acceptance Criteria

• Users can submit a valid payment request from the UI.
• Invalid input is blocked with clear inline validation.
• Successful and failed payments are surfaced with understandable feedback.
• The flow is usable on mobile and desktop screens.

Suggested Implementation Notes

• Reuse the existing Stellar utility layer where possible.
• Keep the interaction simple and accessible while preserving user trust.
• Ensure loading and error states are visually clear.