Environment:
OS: Ubuntu (personal workstation)
Node.js: (version bundled with mcp-remote)
Running mcp-remote via Vscode(version:1.103)

Logs (sanitized):
[info] Starting server from LocalProcess extension host
[warning] [server stderr] Connecting to remote server: https://rube.app/mcp
[warning] [server stderr] Using transport strategy: http-first
[info] Waiting for server to respond to initialize request...
[warning] [server stderr] Connection error: TypeError: fetch failed
[cause]: ConnectTimeoutError: Connect Timeout Error (attempted address: rube.app:443, timeout: 10000ms)
code: 'UND_ERR_CONNECT_TIMEOUT'
[info] Connection state: Error Process exited with code 1

Manual test with curl:
curl -I https://rube.app/mcp
Response:
HTTP/2 401
content-type: application/json
www-authenticate: Bearer error="invalid_token", error_description="No authorization provided", ...
x-redirect-uri: https://rube.app/api/auth/callback

What I observed:
DNS resolution works fine (nslookup rube.app returns a valid IP).
Network connectivity is fine (curl succeeds, but returns 401 Unauthorized).
The server clearly requires an OAuth Bearer token, but the local process does not seem to provide one.
The client then fails with a fetch failed / UND_ERR_CONNECT_TIMEOUT instead of surfacing the 401 Unauthorized properly.

Question:
How should the mcp-remote client authenticate with https://rube.app/mcp?
Is there an environment variable or login flow to obtain and pass the required token?
Could you please provide more detailed steps on how to configure Rube in VS Code? Thanks.