chore: remove TestSignMessage overlay from production homepage

[Kalchaqui]

Summary

The marketing homepage (app/page.tsx) still mounts TestSignMessage, a development overlay left from wallet signMessage work (#68 / related PRs). It must not ship to end users.

Current behavior

Landing page renders a test UI for signing messages on top of the public site.

Expected behavior

Homepage has no debug/test wallet components. signMessage remains available via StellarWalletProvider for real flows (wallet link / verification).

Deliverable

• Remove TestSignMessage import and usage from app/page.tsx
• Delete components/test-sign-message.tsx or keep it only under a clearly gated path (e.g. /dev/...) if maintainers want it — default: delete from prod surface

Acceptance criteria

• app/page.tsx does not import or render TestSignMessage
• Public / has no sign-message test overlay
• Real wallet verification / link flows still work

Test plan

1. Open / — no test panel / debug chat for signing.
2. Smoke-test connect wallet from auth/dashboard.

Notes

Small PR. Closes #<this-issue>.

[delfinacorr]

Hi! I'm a full stack developer. I would love to take care of this issue and clean up the production homepage.

My proposed approach:Remove the import and use of TestSignMessage from app/page.tsx.

Ensure that the test component is completely removed or safely isolated if necessary (following the standard of cleaning it off the production surface).

Do a quick test on the main Wallet Connect flow (authentication/dashboard) to ensure that the actual wallet linking and verification processes remain fully functional and intact.

Thank you very much.

[grantfox-oss]

🦊 GrantFox — @delfinacorr 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 #94)
2. Your PR will be reviewed by the Thalos-Infrastructure maintainers

Good luck! Track your progress on GrantFox.

[Kalchaqui]

Hi @delfinacorr — thanks for taking this on. Leaving the issue open for your PR.

Quick update on main: @leandromasotti already added SHOW_SIGN_MESSAGE_TEST (defaults to false), so the overlay is hidden in production unless that env flag is set (see PR #97 / components/test-sign-message.tsx).

What still remains for this issue:

1. Remove the TestSignMessage import and usage from app/page.tsx (it’s still mounted there).
2. Either delete components/test-sign-message.tsx or keep it only behind an explicit /dev route — please don’t leave it wired on the marketing homepage.
3. Keep signMessage available via StellarWalletProvider for real wallet flows.

Please rebase on latest main, open a PR with Closes #94, and include a short test plan (homepage clean + wallet connect still works). Thanks!

[grantfox-oss]

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

@delfinacorr's PR #104 was approved and merged by @Kalchaqui.

🏆 @delfinacorr: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (48 total points). Track your full progress on GrantFox.

👏 Great work, @delfinacorr! Keep contributing to Thalos-Infrastructure.