feat(names): add Wraith Names claim + manage UI (#122)

[boalambo]

Summary

Adds a full UI for the Wraith Names contract (register / transfer / renew / metadata), closing the gap where users previously had to rely on the CLI.

Closes #122

What's included

• /names page — lists names owned by the connected wallet, with actions to register a new name, renew an expiring one, and transfer ownership to another address.
• Inline availability check — debounced search input that queries the contract as you type, giving a near-instant available/taken result without spamming RPC calls.
• Metadata editor — set avatar URL, Twitter handle, and description per name.
• Expiring names banner — surfaces on the Stellar Send page (Home) when the connected wallet has names nearing expiry, so renewal isn't missed.

Files changed

• src/pages/Names.tsx (new) — main Names page: list, register, renew, transfer, metadata editor.
• src/lib/stellar/names.ts (new) — contract entrypoint calls (register, transfer, renew, set_metadata) and availability lookup.
• src/components/ExpiringNamesBanner.tsx (new) — reusable banner component for expiring names.
• src/App.tsx — added /names route.
• src/components/Header.tsx — added "Names" nav link.
• src/components/StellarSend.tsx — integrated ExpiringNamesBanner on Home.

Acceptance criteria

• All contract entrypoints covered (register, transfer, renew, set_metadata)
• Availability check responds in <500ms (debounced input + perf logging)
• Expiring names surface a banner on Home

Design/implementation notes

• Follows existing codebase patterns and design system (colors, typography, layout).
• Uses the existing Stellar wallet context for transaction signing — no new wallet integration needed.
• Debouncing on the availability search prevents excessive contract calls while typing.
• Rebased cleanly onto develop; resolved merge conflicts in App.tsx, Header.tsx, and StellarSend.tsx from unrelated changes landed on develop in the meantime (new routes, nav links, and CI fixes).

Testing

• Manual testing against the Names contract (Stealth account labeling + personal organization #20) on testnet.
• Verified register/renew/transfer flows sign and submit correctly via wallet context.
• Verified banner appears/disappears correctly based on name expiry thresholds.

Notes

• Please check availability-check latency on your end too, since network conditions affect the <500ms target.
• Open to feedback on the expiry threshold used for the banner warning.

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[truthixify]

Correction to my earlier comment: this hit merge conflicts against develop after the batch merge cascade. Rebase and force-push and I will pick it up.

[boalambo]

Correction to my earlier comment: this hit merge conflicts against develop after the batch merge cascade. Rebase and force-push and I will pick it up.

Pls check again, and happy weekend. @truthixify

[truthixify]

Merged. Names claim UI closes the loop for the .wraith flow end-to-end, appreciated.

[boalambo]

Merged. Names claim UI closes the loop for the .wraith flow end-to-end, appreciated.

Thank you for the compliment. Looking forward to work for you again