[FEATURE] Bring anonymous servers to the logged in account

# Feature

When launching the inspector with `npx @mcpjam/inspector --config mcp_servers.json --server `, the server is loaded into the current anonymous session. As soon as I sign in, the UI switches to my account's workspace and the CLI-loaded server disappears — I have to re-add it manually through the sidebar.
This forces a choice between two workflows that should work together:

CLI-driven loading (`--config`) is the fastest way to spin up the inspector against a specific server during local dev.
Chat is so useful during development.

Right now you can only have one or the other in a single session.

# Solution

When the local session is started and connected to the local MCP server it shouldn't be lost after the sign in.