fix: replace unsupported gpt-5.1-codex-mini model in github-remote-mcp-auth-test

[Copilot]

The GitHub Remote MCP Authentication Test workflow has been failing for 3+ consecutive days because gpt-5.1-codex-mini is not available on the current subscription tier.

Changes

• github-remote-mcp-auth-test.md — replace model: gpt-5.1-codex-mini with model: gpt-5.4-mini
• github-remote-mcp-auth-test.lock.yml — recompiled to reflect the updated model

# Before
engine:
  id: copilot
  model: gpt-5.1-codex-mini

# After
engine:
  id: copilot
  model: gpt-5.4-mini

[pelikhan]

@copilot use gpt-5.4-mini

[Copilot]

@copilot use gpt-5.4-mini

Done — updated to gpt-5.4-mini in 5147820.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/graphql
  • Triggering command: /usr/bin/gh /usr/bin/gh api graphql -f query=query($owner: String!, $name: String!) { repository(owner: $owner, name: $name) { hasDiscussionsEnabled } } -f owner=github -f name=gh-aw (http block)
  • Triggering command: /usr/bin/gh /usr/bin/gh api graphql -f query=query($owner: String!, $name: String!) { repository(owner: $owner, name: $name) { hasDiscussionsEnabled } } -f owner=github -f name=gh-aw -pack /home/REDACTED/work/gh-aw/gh-aw/cmd/gh-aw/main.go (http block)
• https://api.github.com/repos/astral-sh/setup-uv/git/ref/tags/eac588ad8def6316056a12d4907a9d4d84ff7a3b
  • Triggering command: /usr/bin/gh gh api /repos/astral-sh/setup-uv/git/ref/tags/eac588ad8def6316056a12d4907a9d4d84ff7a3b --jq [.object.sha, .object.type] | @tsv (http block)
• https://api.github.com/repos/github/gh-aw
  • Triggering command: /usr/bin/gh gh api /repos/github/gh-aw --jq .default_branch (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[Copilot]

Pull request overview

Updates the GitHub Agent Workflow model used by the GitHub Remote MCP Authentication Test to a supported Copilot tier model, unblocking a workflow that has been failing due to an unavailable model.

Changes:

• Switch workflow engine model from gpt-5.1-codex-mini to gpt-5.4-mini in the source workflow definition.
• Recompile the generated lock workflow to reflect the new model across metadata/env wiring.

Show a summary per file

File	Description
.github/workflows/github-remote-mcp-auth-test.md	Updates the workflow frontmatter engine model to gpt-5.4-mini.
.github/workflows/github-remote-mcp-auth-test.lock.yml	Regenerates compiled workflow with updated model identifiers and associated generated heredoc markers.

Copilot's findings

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• Files reviewed: 2/2 changed files
• Comments generated: 0