* fix(github-copilot): reject unsupported OAuth enterprise domain before refresh and model routing
Legacy github-copilot OAuth credentials can carry a non-github.com
enterpriseUrl. The token-refresh path templated it into the endpoint and
sent the bearer refresh token there with no allowlist, and the model
routing path derived a base URL from the same credential, so an unexpired
credential kept routing its access token to that origin without ever
reaching a refresh.
A persisted credential origin that is not on the Copilot host allowlist
is now rejected before any request is issued and before any model URL is
produced. Because an off-allowlist origin means the stored access token
may itself have been minted by that origin, the credential is refused as
a whole rather than coerced to github.com: modifyModels withholds the
github-copilot models so the token has no route, and its proxy-ep is
never trusted. Login rejects an unsupported host up front, so every path
that turns a domain into a bearer-bearing URL validates first.
formatAuthDoctorHint guides affected users to re-authenticate, mirroring
the qwen-portal hint. Supported hosts are unchanged: github.com and
*.ghe.com data-residency tenants still route and refresh as before.
The allowlist plus a new isSupportedGithubCopilotDomain predicate move to
a dependency-free plugin-sdk leaf so the core OAuth runtime can share them
without closing a module cycle; plugin-sdk/provider-auth re-exports
normalizeGithubCopilotDomain, so the plugin-owned GitHub Copilot provider
keeps its existing import.
Fixes#103078.
* fix(github-copilot): resolve provider auth base conflict
* fix(github-copilot): resolve provider auth base conflict
* fix(github-copilot): validate token proxy endpoint
* fix(github-copilot): remove stale helper import
---------
Co-authored-by: Peter Steinberger <steipete@gmail.com>
Co-authored-by: Peter Steinberger <peter@steipete.me>
