* ci: standardize workflow concurrency and automate release-note labeling
Concurrency — prevent racing CI jobs
- Every top-level workflow now declares an explicit concurrency block.
- PR runs cancel-in-progress on supersede; main/push/workflow_call/publish
runs queue instead of cancelling so every commit and every release is
validated end-to-end.
- ci.yml uses a literal `CI-` prefix (not `${{ github.workflow }}`) and a
per-run nested group for workflow_call invocations, avoiding a potential
deadlock with publish.yml and release-candidate.yml callers whose own
concurrency groups could otherwise collide with the called workflow.
- ci-report.yml falls back to `<head-repo>/<head-branch>` for fork PRs
(stable across reruns) instead of the per-run-unique workflow_run.id
which did not actually serialize anything.
- ci-quality.yml enforces the convention: fails CI if any non-reusable
workflow lacks a concurrency block or a reusable workflow declares one.
Release-note automation
- New pr-labeler.yml: amannn/action-semantic-pull-request enforces
conventional-commit PR titles on pull_request (fork-safe, read-only);
release-drafter/release-drafter with disable-releaser: true applies the
matching label under pull_request_target (write-scoped). sync-labels in
.github/release-drafter.yml removes managed autolabels that no longer
match (e.g. when `!` or `BREAKING CHANGE:` is dropped from a PR).
- .github/release.yml (unchanged) continues to map labels to categorized
release-notes sections.
- dependabot.yml added for the github-actions ecosystem so pinned SHAs
auto-refresh on a weekly cadence.
Docs
- CONTRIBUTING.md documents the concurrency convention, the
conventional-commit PR-title rules, and the reusable-workflow exception.
Follow-up to verify before relying on the labeler in anger
- gh api repos/amannn/action-semantic-pull-request/git/refs/tags/v5.5.3
- gh api repos/release-drafter/release-drafter/git/refs/tags/v6.0.0
- Confirm release-drafter reads its config from the base ref (not fork
head) when invoked via pull_request_target.
* ci: address PR review feedback on concurrency and labeler workflows
Two blocking fixes
- pr-labeler.yml: separate concurrency slots for pull_request and
pull_request_target. Previously both triggers shared a single group
with cancel-in-progress: true, so the privileged autolabel run could
cancel the title-validation check mid-run and leave a required status
in a permanent cancelled state.
- pr-labeler.yml autolabel job: add contents: read. release-drafter's
context.config() reads .github/release-drafter.yml from the default
branch via the repo-contents API and 403s without the scope. Job-level
permissions nullify all unlisted scopes so an explicit grant is needed.
Two non-blocking improvements
- Replace the hardcoded reusable-workflow allowlist in ci-quality.yml
with dynamic on:-block parsing. New workflow_call-only workflows no
longer produce false-positive convention failures.
- Implement actual group-key validation. The check now also asserts that
every concurrency.group expression references either ${{ github.workflow }}
or the literal CI- prefix (the documented ci.yml exception).
- Script extracted to .github/scripts/check-workflow-concurrency.py so
it is runnable locally and independently testable.
