GitHub's UI-configured "Code quality" scan only fires on the default
branch (staging), which leaves every staging→main promotion PR
unscanned. The "On push and pull requests to" field in the UI has no
dropdown; multi-branch scanning on private repos without GHAS isn't
available there.
Workflow file gives us the control we can't get in the UI: triggers
on push + pull_request for both branches. Runs on the same
self-hosted mac mini via [self-hosted, macos, arm64].
upload: never — GHAS isn't enabled on this repo so the SARIF upload
API 403s. Keep results locally, filter to error+warning severity,
fail the PR check on findings, publish SARIF as a workflow artifact.
Flipping upload: never → always after GHAS is enabled (if ever) is
a one-line change.
Picks up the review-flagged improvements from the earlier closed PR:
- jq install step (brew, no assumption it's present)
- severity filter (error+warning only, drops noisy note-level)
- set -euo pipefail
- SARIF glob (file name doesn't match matrix language id)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
07ec90a23c