Add mobile vault action failure recovery

[Brainoncrack]

Description

Difficulty: Expert

Type: UX

Summary

Add recovery states for failed vault actions.

Current Behaviour

Vault actions may fail due to validation, unsupported features, network errors, signing rejection, or contract errors.

Expected Behaviour

The app should map failure categories to clear recovery options.

Suggested Implementation

Create error mapping and UI states for common vault failure categories.

Files or Areas Likely Affected

app/
src/features/vault/
src/utils/
src/components/

Acceptance Criteria

• Vault failure categories are mapped.
• User-facing copy is clear.
• Retry guidance is safe.
• Unsupported-feature cases are handled.
• Sensitive details are hidden.

Additional Notes

This aligns with SDK vault error taxonomy.

[akinboyewaSamson]

Hi Maintainer,

I would love to be assigned to this issue.

I’m a Full-Stack Developer and I also actively explore blockchain development and smart contracts, which has strengthened my problem-solving skills and attention to code quality.

After reviewing the issue, I believe I can contribute effectively and deliver a well-tested solution within the expected standards of the project.

ETA: 6 hours

Thank you for your consideration.

[Favouratambi]

I'm interested in taking this on. I'll implement clear recovery states for common vault action failures, map each error category to appropriate user guidance, handle unsupported features gracefully, and ensure sensitive error details are never exposed while keeping the experience consistent and well-tested.

[grantfox-oss]

🦊 GrantFox — @Favouratambi has been assigned to this issue as part of the Official Campaign | FWC26 campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #334)
2. Your PR will be reviewed by the Axionvera maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign | FWC26 campaign!

@Favouratambi's PR #405 was approved and merged by @El-swaggerito.

🏆 @Favouratambi: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (153 total points). Track your full progress on GrantFox.

👏 Great work, @Favouratambi! Keep contributing to Axionvera.