Jenkinsfile Validator

Validates Jenkinsfiles and shared library code with pure bash and standard Unix tools, no Jenkins server required. Catches syntax errors in both declarative and scripted pipelines, scans for hardcoded credentials, and flags best practice violations like missing timeouts or unrestricted agent blocks. The layered approach is smart: it detects pipeline type automatically, runs syntax checks first, then security and maintainability scans. Exit codes are clean for CI gating, and there's a strict mode that fails on warnings. Most useful during local development or in pull request checks before pipelines hit actual Jenkins infrastructure. The offline-first design with optional plugin doc lookups is refreshingly practical for air-gapped environments.