Add error toast on failed wallet sign

[Baskarayelu]

Summary

Differentiate between user-rejection (silent) and unexpected errors (toast).

Background

The current behaviour does not match the documented or expected behaviour. The fix should restore the intended semantics rather than paper over the symptom, and the same fix should be reachable through a regression test so it does not come back.

Acceptance criteria

• The change matches the summary above.
• A regression test that fails before the fix and passes after.
• The PR description names the user-visible impact and any mitigations users were applying.
• Lint, type-check, and tests all pass locally.
• PR description references this issue with Closes #<this-issue>.

Implementation hints

• Start with a failing test that reproduces the bug, then write the fix. Land both in the same PR.
• If the bug was hidden by an over-broad catch/unwrap, tighten the error path while you are there.
• Verify the fix in the dev environment (or via the equivalent integration test) before requesting review.
• Note the user-visible impact in the PR description so the release notes can pick it up.

Repo-specific notes

• Run npm run lint, npm run build, and the unit tests locally before pushing.
• If you change a public component prop, update the matching Storybook story and the docs/COMPONENTS.md entry.
• Respect the design tokens (CSS variables / Tailwind config); do not hard-code colours, spacing, or radii.

Out of scope

• Unrelated refactors in adjacent files.
• Stylistic-only changes (formatting, renaming) that are not required by the fix.
• Anything beyond the acceptance criteria above; surface follow-ups as separate issues.

How to claim and submit

1. Comment on this issue saying you'd like to take it on; wait for a maintainer to assign you (avoids duplicated effort).
2. Open a PR that references this issue (Closes #<this-issue>).
3. Make sure CI is green and request review from a CODEOWNERS maintainer.
4. PRs that close this issue and pass review may qualify for a reward — see the MAYBE REWARDED label and the GrantFox OSS campaign page.

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Category: bug  ·  Campaign: GrantFox OSS · Official Campaign · Maybe Rewarded

[YfengJ]

Hi maintainers, I would like to apply for this issue if it is available.

If assigned, I will keep the fix narrowly scoped to wallet-sign error handling UI: add a regression test that distinguishes user rejection from unexpected sign failures, keep user rejection silent, show the existing token-styled error toast for unexpected errors, and avoid changing wallet credentials, signing payloads, or transaction flow semantics.

I will wait for maintainer/GrantFox assignment before cloning, implementing, or opening a PR.

[GBOYEE]

I'll take this one. Extract inline styles into CSS modules or Tailwind classes.

Plan

1. Extract inline styles into CSS modules or Tailwind classes
2. Ensure responsive behavior preserved
3. Verify no visual regression

Files

• components/
• styles/
• app/globals.css

PR incoming shortly. Closes #400

[SudiptaPaul-31]

May I be assigned to this issue please my name is Sudipta Paul a active open source contributor with more than 50+ merged pr's and also an active contributor of GrantFox from begining and would love to work on this issue and get a pr merged

[grantfox-oss]

🦊 GrantFox — @SudiptaPaul-31 has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #400)
2. Your PR will be reviewed by the CredenceOrg maintainers

Good luck! Track your progress on GrantFox.

[HassanKorey]

@HassanKorey has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Pls assign

ℹ️ Repo Maintainers: To accept this application, review their application or assign @HassanKorey to this issue.

[Anadudev]

@Anadudev has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I would like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Anadudev to this issue.