Closes#297. CI/scripts-only — no packages/ change, so no changeset required
per .claude/rules/changeset-required.md.
- scripts/diff-parse.ts: walks raw YAML at workflow + job scopes (in addition
to the existing step scope) and grades every recognized key against a
preservation predicate or a documented expected-drop. Reuses focused parsers
(parseJobIf, parseJobOutputDefs, parseWorkflowContainer, parseWorkflowServices,
parseMatrixDef, parseFailFast, parseJobDependencies, getWorkflowTemplate).
defaults.run.shell preservation detects the heredoc-wrap marker emitted by
wrapScriptForShell.
- third-party-workflows/: vendored scan-only corpus — turborepo-lint.yml,
playwright-infra.yml, docker-validate.yml — each with attribution header.
Picked up automatically by collectWorkflowFiles.
- package.json: parse:diff added to the parallel pnpm check pipeline so
regressions fail standard CI.
Result: 37 workflows scanned (.github/workflows + third-party-workflows),
0 drifts. pnpm check exits 0; pnpm agent-ci-dev run --all reports 39/39.
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Peter Pistorius