Give icon-only controls an accessible name

[RaymondAbiola]

Summary

Controls that show only an icon, such as the copy action, have no text for assistive technology to announce. Adding accessible names is a small change with a large effect.

Acceptance criteria

• Every icon-only control has an accessible name.
• The names describe the action rather than the icon.
• The visual layout is unchanged.

Getting started

Fork this repository, clone your fork, and add this repo as upstream:

git clone https://github.com/<your-username>/tricklepay-frontend.git
cd tricklepay-frontend
git remote add upstream https://github.com/TricklePay/tricklepay-frontend.git

Create a branch for this issue:

git checkout -b a11y/issue-165

Suggested commit message:

fix: name icon-only controls

Run npm run lint, npm run typecheck, npm test, and npm run build before opening a pull request and linking this issue.