🔖 fix: Agent Marketplace Bookmark and New Chat buttons

[ruggishop]

Summary

This PR fixes two issues with the Agent Marketplace page:

1. Bookmark button no longer requires an active conversation - Previously, the bookmark navigation component required a conversation object from the Recoil store, preventing it from functioning on pages without an active chat (like the marketplace).

Before	After

2. Fixed React context access in Agent Marketplace - The MarketplaceProvider was being rendered inside the component that needed to consume it, causing context hook errors; these errors caused the New Chat button to be unresponsive (with a NPE error in the console) when clicked from the Agent Marketplace page. Moved the provider to wrap the component at the route level.

Before	After

Change Type

• Bug fix (non-breaking change which fixes an issue)

Testing

Test Process:

1. Navigate to /agents or /agents/:category routes
2. Verify the bookmark button dropdown opens and displays available bookmarks
3. Verify the new chat button creates a new conversation
4. Confirm no React context errors in the console
5. Test that bookmark filtering still works as expected

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• My changes do not introduce new warnings
• Local unit tests pass with my changes