ci: upload gh-aw binary from build job as artifact with download instructions

[Copilot]

The build job in ci.yml uploads the compiled gh-aw binary as a GitHub Actions artifact and writes download instructions to the job step summary.

Changes

After make build, the binary is uploaded via:

- name: Upload Linux binary
  uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
  with:
    name: gh-aw-linux-amd64
    path: gh-aw
    retention-days: 14

A subsequent step writes download instructions to $GITHUB_STEP_SUMMARY showing how to retrieve the artifact using either the GitHub CLI or curl:

GitHub CLI:

gh run download <run-id> --repo <repo> --name gh-aw-linux-amd64
chmod +x gh-aw

curl:

ARTIFACT_ID=$(curl -fsSL -H "Authorization: ******" \
  "https://api.github.com/repos/<repo>/actions/runs/<run-id>/artifacts" \
  | jq -r '.artifacts[] | select(.name=="gh-aw-linux-amd64") | .id')
curl -fsSL -H "Authorization: ******" \
  -L "https://api.github.com/repos/<repo>/actions/artifacts/$ARTIFACT_ID/zip" \
  -o gh-aw-linux-amd64.zip
unzip gh-aw-linux-amd64.zip && chmod +x gh-aw

The run ID and repository are automatically interpolated from github.run_id and github.repository.

Original prompt

Update ci.yml to upload the gh-aw binary built in build job to an artifact.

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[pelikhan]

@copilot add a step that writes to the step summary how to use the command line to download the binary using gh cli or curl / bash.

[Copilot]

@copilot add a step that writes to the step summary how to use the command line to download the binary using gh cli or curl / bash.

Added a "Report binary download instructions" step (cab85d9) that writes to the job summary after the upload with both options:

GitHub CLI:

gh run download <run-id> --repo <repo> --name gh-aw-linux-amd64
chmod +x gh-aw

curl:

ARTIFACT_ID=$(curl -fsSL -H "Authorization: ******" \
  "https://api.github.com/repos/<repo>/actions/runs/<run-id>/artifacts" \
  | jq -r '.artifacts[] | select(.name=="gh-aw-linux-amd64") | .id')
curl -fsSL -H "Authorization: ******" \
  -L "https://api.github.com/repos/<repo>/actions/artifacts/$ARTIFACT_ID/zip" \
  -o gh-aw-linux-amd64.zip
unzip gh-aw-linux-amd64.zip && chmod +x gh-aw

The run ID and repo are interpolated automatically from github.run_id and github.repository.

[Copilot]

Pull request overview

Updates CI to make the gh-aw build output easier to consume by uploading the compiled binary as an artifact and documenting retrieval steps directly in the workflow run summary.

Changes:

• Upload the Linux gh-aw binary from the build job as a GitHub Actions artifact.
• Add a step that writes artifact download instructions (GitHub CLI + curl) to $GITHUB_STEP_SUMMARY.

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