feat(mobile): add accessibility semantics and debounce FX quotes" --body-file - <<'EOF'

[meetdarc-tech]

Summary

This PR addresses the mobile accessibility blockers and the noisy FX/fee polling in the send flow.

What changed

Accessibility

• Added explicit accessibilityRole and descriptive labels for primary home action cards, navigation buttons, and transaction actions.
• Added accessibilityState={{ selected }} for currency pills, anchor cards, and dispute reason toggles so assistive technology communicates the current selection.
• Wrapped the transfer progress stepper in a screen-reader-friendly progressbar with a textual status summary.
• Labeled tab icons with accessibility text for Home, History, and KYC tabs.

FX/fee fetch behavior

• Debounced the FX rate and fee breakdown requests by 450 ms before triggering fetches from the amount input.
• Added stale-request protection so older responses cannot overwrite newer ones.
• Added retry UX for quote failures instead of silently leaving the data blank.
• Prevents repeated network calls while a user is typing a value, reducing battery/data waste and race conditions.

Regression coverage

• Added targeted assertions for assistive-state semantics in the send-money flow.
• Added a coverage check for the transfer progressbar accessibility label.
• Added a debounce regression test ensuring only one quote fetch pair occurs per typing window.

Validation

• Static editor checks for the touched mobile files reported no TypeScript errors.
• Full Jest execution is currently blocked in this Windows environment by the local React Native package installation/resolution issue in the workspace, so runtime verification needs one more pass in a clean mobile install environment.

Notes

This change is scoped to the mobile app and focuses on the SR-182 and SR-183 issues without broadening scope outside the affected screens.
EOF

closes #1325
closes #1326

[vercel]

Someone is attempting to deploy a commit to the Harold's projects Team on Vercel.

A member of the Team first needs to authorize it.

[drips-wave]

@meetdarc-tech Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits