Add role="status" and aria-live to Spinner so loading states are announced to screen readers

[Jagadeeshftw]

📌 Description

Spinner (src/components/Spinner.tsx) renders a spinning glyph and a text label but exposes no ARIA semantics, so screen-reader users get no announcement when a panel (e.g. AnchorDetail, SettlementDetail, PoolsPanel) switches into a loading state. The spinning span is already aria-hidden, but the wrapping element carries no role or live-region attribute.

🧩 Requirements and context

• Add role="status" and aria-live="polite" to Spinner's root element so its label text is announced when it mounts.
• Keep the visual aria-hidden spinner glyph unchanged.
• Do not change Spinner's props API (label).

🛠️ Suggested execution

• Update src/components/Spinner.tsx to add role="status" and aria-live="polite" to the wrapping div.
• Extend src/components/Spinner.test.tsx to assert the role/aria-live attributes are present and the label text is queryable via getByRole("status").
• Spot-check that pages embedding Spinner (e.g. src/app/anchors/loading.tsx) don't end up with duplicate/competing live regions.

✅ Acceptance criteria

• Spinner's root element has role="status" and aria-live="polite".
• A screen reader announces the label text when Spinner mounts.
• Existing visual rendering and props are unchanged.

🔒 Security notes

No new attack surface; purely an accessibility fix.

📋 Guidelines

• Minimum 95% test coverage
• Clear documentation
• Timeframe: 96 hours

[onyekachi66]

I am confident that I am experienced enough to implement this issue

[grantfox-oss]

🦊 GrantFox — @onyekachi66 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 #123)
2. Your PR will be reviewed by the AnchorNet-Org maintainers

Good luck! Track your progress on GrantFox.

[Baskarayelu]

🦊 @onyekachi66 you're assigned, via repo automation. looking forward to the fix. join our community: discord.gg/WC53JxDqx

[grantfox-oss]

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

@onyekachi66's PR #390 was approved and merged by @Jagadeeshftw.

🏆 @onyekachi66: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (328 total points). Track your full progress on GrantFox.

👏 Great work, @onyekachi66! Keep contributing to AnchorNet-Org.