Add a page title update on each route change reflecting the current page name and creator name where applicable

[Chucks1093]

Summary

The browser tab currently shows the same generic title on every page. Updating document.title on each route change to reflect the current page — and the creator's display name on profile pages — improves navigation context and browser history readability.

Scope

• Home page: 'AccessLayer — Creator Key Marketplace'
• Marketplace page: 'Marketplace — AccessLayer'
• Creator profile page: '{CreatorName} — AccessLayer'
• Portfolio page: 'My Portfolio — AccessLayer'
• Revert to the default title on unmount to avoid stale titles after navigation

Acceptance Criteria

• Home page title set correctly
• Marketplace page title set correctly
• Creator profile title includes the creator's display name
• Portfolio page title set correctly
• Title reverts correctly on unmount

ETA: 12 hours

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Coordinate on Telegram

[Zarmaijemimah]

Hi maintainer I’m a full stack developer. I have knowledge and interest in solving any tech issues and I would be glad to contribute my skills. I’d appreciate the opportunity to work on this issue. Thank you.