Desktop app routes public github.com issue links to enterprise host instead of preserving origin

This was generated by AI during triage.

Summary

Opening a public github.com issue link in the desktop app creates an inline tab that fails with:

We couldn't load this issue. Please try again.

The tab offers only Retry. Logs show the request being sent to the active enterprise API host instead of api.github.com.

Environment

• GitHub Copilot desktop app v1.0.25
• App-spawned Copilot CLI v1.0.71
• Windows 11
• Active/default account belongs to an enterprise GitHub host
• github.com access is also configured

Reproduction

1. Open this public issue link in the desktop app:
   https://github.com/github/copilot-cli/issues/4176
2. Allow the app to open it as an inline issue tab.
3. Observe the loading failure and Retry button.

Older public issues, including #2901, produced the same failure, ruling out new-issue propagation as the explanation.

Expected behavior

The link's origin host should be preserved. The app should either:

• load the github.com issue inline using github.com; or
• explain that inline loading is unsupported and offer Open in browser.

An owner/repository/number resource must not be resolved against a different GitHub host.

Sanitized evidence

04:54:14.701589Z subscribe_resource owner=github repo=copilot-cli number=4176 [no host]
04:54:28.055442Z get_issue owner=github repo=copilot-cli number=4176 [no host]
04:54:28.143159Z API request failed status=404
  https://<enterprise-host>/api/v3/repos/github/copilot-cli/issues/4176

• The failed tab generated 36 equivalent enterprise-host 404 responses.
• The active app log contained no api.github.com request.
• Nine older public github.com issues failed through the same enterprise endpoint.
• Failures reported auth_required=false and rate_limited=false.

Observed versus unconfirmed

Observed: public github.com issue resources are routed to the active enterprise API host, and the failed inline view provides no browser fallback.

Unconfirmed: logs do not contain the original clicked URL, so they do not show where its github.com host was lost. Pull-request behavior has not been verified.

Related issue

Related, but not a duplicate: #4148.

Questions

1. Where should the source host enter the inline resource identity?
2. Does inline loading support resources from multiple GitHub hosts?
3. Can failed or unsupported inline loads offer Open in browser?

Additional context

This was a read-only investigation. A sanitized screenshot is available showing the inline error and its Retry-only recovery.

提供された再現手順とサニタイズ済みログを使って、まず inline issue タブと subscribe_resource/get_issue パスを追跡します。API リクエストの前にクリックしたホストが失われる箇所を確認し、その後、公開リンクで github.com が維持されるか、Open in browser のフォールバックが提供されることを、Enterprise ホストのシナリオも含めて検証します。