/models command does not list authenticated Copilot models that can be used with -m #10454

Problem

When using OpenCode with a Copilot Pro subscription, the model github-copilot/claude-opus-4.5 can be set and works with the -m argument or in JSON config, but does not appear when running /models, even though it is visible and enabled in my Copilot settings and is accessible for actual use.

Expected

• Any Copilot models that are authenticated, active in the user's Copilot settings, and usable with -m or via config should appear in the output of /models

Actual

• Copilot models like github-copilot/claude-opus-4.5 do not show up in /models output, misleading users into thinking they are not available
• This is confusing because the model works fine if referenced explicitly

Steps to Reproduce

1. Have a Copilot subscription (with a model like Claude Opus 4.5 enabled at https://github.com/settings/copilot/features)
2. Authenticate via /connect for GitHub Copilot in OpenCode
3. Run /models in OpenCode -- github-copilot/claude-opus-4.5 is not shown
4. Run opencode -m github-copilot/claude-opus-4.5: model works

Additional Info

• The codebase sets autoload: false for Copilot provider, so Provider.list() may filter Copilot
• This seems like a logic/UX bug: if a provider/model is authenticated and usable, it should be discoverable via /models.
• The problem started since I instaled Oh-my-Opencode. Now I cannot revert the problem.

Suggestion

• /models should detect and display any Copilot models that can actually be used with current authentication/context.
• At minimum, clarify or add diagnostics if a model is hidden but available when referenced explicitly.
• Optional: Add a hint to /models output if special config is needed to make Copilot models visible.