Blocked as auth fails whenever -p or --agent used (enterprise login)

Describe the bug

copilot fails to load due to auth issues when using -p --agent:

copilot -p "hello"

...worked fine.

Then if you run this, with --agent, it breaks:

copilot -p "hello" --agent my-agent

! Third-party MCP servers are disabled by your organization's Copilot policy. Only built-in servers are available.

Error: Authentication failed (Request ID: 2915:A0B85:4D563A2:5BD65FE:6A915A71)

Your GitHub token may be invalid, expired, or lacking the required permissions.

To resolve this, try the following:
  • Start 'copilot' and run the '/login' command to re-authenticate
  • If using a Fine-Grained PAT, ensure it has the 'Copilot Requests' permission enabled
  • If using COPILOT_GITHUB_TOKEN, GH_TOKEN or GITHUB_TOKEN environment variable, verify the token is valid and not expired
  • Run 'gh auth status' to check your current authentication status

And further more, once you do the above, then:

copilot -p "hello"

...is permanently broken too now with the same error as above, despite working moments before. Strange.

It's enterprise, so we are logged in via ghe.com.

Running a regular "copilot" is fine.

Version: 1.0.81

Can you please fix this latest blocking login bug. There should be no differing auth code paths just because of a -p or --agent parameter.

I suspect you've hardcoded or chosen api.githubcopilot.com incorrectly again (if so, please add some effective guardrails to prevent this, this is a repeated root cause of various login issues).

Affected version

No response

Steps to reproduce the behavior

No response

Expected behavior

No response

Additional context

No response

Comece reproduzindo a falha com a CLI do copilot usando -p, --agent e o comando /login em um ambiente Enterprise do ghe.com; compare o comportamento com uma execução interativa do copilot e verifique gh auth status. Considera-se concluído quando tanto -p quanto --agent usarem o caminho correto de autenticação Enterprise sem interromper os comandos subsequentes.