Pipeline audit follow-up: reduce wasted runner time on PRs and tighten CI
security, without reducing what actually gets validated.
Runner-time waste:
- Concurrency with PR-only cancel-in-progress on CI, E2E, and docker-build,
so a new push cancels the previous commit's still-running checks. Non-PR
runs use the unique run_id as the group, because GitHub keeps at most one
pending run per group even with cancel-in-progress: false — a shared ref
group could silently drop a queued master run.
- paths-ignore for docs-only changes (Markdown, docs/, .plans/, .codex/,
.claude/) on the Electron build matrix and the E2E suites; E2E also skips
apps/website/**. The build workflow keeps apps/website/** because its Linux
job builds the website to verify AppStream assets. Tag pushes are
unaffected: GitHub does not evaluate paths filters for tags.
- PRs lint affected projects only; master pushes keep the full run-many.
Lint-global inputs (eslint.config.mjs, tools/eslint/**) now mark all 41
lint projects affected, including the run-commands targets database and
packaging, so the max-lines baseline cannot be widened without lint.
Hardening:
- Explicit least-privilege permissions on CI, E2E, and build-and-make; the
create-release job keeps its job-level contents: write. The repository
default workflow token was switched to read-only.
- New actionlint job (image pinned by digest, shellcheck at warning+), with
the shared-anchor false positive suppressed in .github/actionlint.yaml.
Fixed one real finding: unquoted $GITHUB_OUTPUT.
- .github/dependabot.yml: weekly cadence, minor+patch grouped per ecosystem
(npm, GitHub Actions, Docker), majors stay individual PRs.
Docs updated: CLAUDE.md, docs/architecture/nx-workspace-boundaries.md, and
docs/architecture/validation-map.md now describe affected-lint on PRs and the
E2E path-filter exceptions.
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