Stakgraph: Set Base URL command does not persist when connected to remote server

Description

When using the VSCode extension, the Stakgraph: Set Base URL command appears to successfully set the new base URL. However, when the extension is connected to a remote server, initiating a new chat session using Stakgraph Chat unexpectedly reverts the base URL back to localhost.

Steps to Reproduce:

• Open VSCode and connect to a remote server
• Run the command Stakgraph: Set Base URL and enter a valid remote URL e.g. https://mcp.repo2graph.sphinx.chat/
• Start a new chat session via Stakgraph Chat.

Observe that the base URL used for the chat session reverts to http://localhost.

Expected Behavior:

• The base URL set via Stakgraph: set base url should persist across all operations, including when connected to a remote server and initiating a new chat session.

Actual Behavior:

• The base URL is reset to localhost when starting a chat session after setting it on a remote connection.

Reproduce the issue through the VSCode extension's “Stakgraph: Set Base URL” command and the “Stakgraph Chat” entry point while connected to a remote server. Trace how the configured URL is stored and how a new chat session selects its URL; done means the configured remote URL remains in use instead of reverting to http://localhost.