a11y(frontend): make send and transfer flows keyboard-complete

[arisu6804]

Problem

A financial send flow can be inaccessible when controls are unlabeled, focus is lost, or validation is not announced.

Objective

Deliver a production-quality improvement to send form, quote confirmation, and result dialogs that creates measurable value for correctness, security, reliability, performance, or maintainability.

Implementation scope

• Use semantic labels, keyboard operation, focus management, error association, and clear status announcements.

Acceptance criteria

• The complete flow works without a pointer; all errors are associated and announced; dialogs return focus correctly.

Required validation

• Keyboard, focus, screen-reader semantics, and automated accessibility tests.
• Existing tests and CI remain passing.
• Add regression coverage for the original failure mode.
• Do not weaken, delete, or skip unrelated tests to obtain a green build.

PR quality bar

• Keep the PR focused and explain design tradeoffs, compatibility impact, and test evidence.
• Avoid typo-only, documentation-only, cosmetic-only, or unrelated refactor submissions.

Out of scope

• Broad rewrites not required by the acceptance criteria.
• Changes to unrelated services, contracts, or user flows.

[TechBroAfrica]

Focused on building trust through consistent, meaningful contributions. I approach every issue with curiosity, attention to detail, and a commitment to delivering clean, maintainable, and well-tested solutions. Driven by impact, not just commits, I value clear communication, effective collaboration with maintainers, continuous learning, and delivering meaningful value to every project I contribute to.

[Prozaks]

Hi Maintainer,

I'd like to work on this issue. I'm a full-stack developer with experience in JavaScript, Python, TypeScript, and Rust, and a history of contributing to open-source projects.

I've reviewed the scope and can deliver a solid implementation within 24 hours of being assigned. Happy to share past work if helpful.

Thanks for considering me!

[grantfox-oss]

🦊 GrantFox — @TechBroAfrica has been assigned to this issue as part of the Third Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #284)
2. Your PR will be reviewed by the RemitFlow maintainers

Good luck! Track your progress on GrantFox.

[TechBroAfrica]

Hi @arisu6804 Kindly review task for merge, Thanks