On a merged PR labelled "breaking change", POST the PR number to the site's
/api/breaking-changes/ingest endpoint so it can show a temporary advisory on
the affected scripts. Uses pull_request_target (secrets available for fork
PRs) and never checks out PR code — it only forwards the number after merge.
The `labeled` trigger also covers labelling a PR after it has merged.
Requires repo secret BREAKING_CHANGE_INGEST_SECRET (matching the site) and an
optional SITE_URL variable (defaults to https://community-scripts.org).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TFBuZEp142Ei2PAfWqbMXT
Michel Roegl-Brunner