Ln 622 Build Auditor

This is a specialized L3 worker that plugs into a larger codebase audit pipeline to check build health and code quality tooling. It scans for compiler errors, linter warnings, type issues, failed tests, and build config problems, then returns structured findings with severity levels and effort estimates. You get a compliance score out of 10 for the build health category. It's part of what looks like a coordinated audit system with multiple workers handling different concerns. The 313 installs and clean security audits suggest people are actually running it in production workflows, though you'll need the broader audit coordinator setup to make real use of it since this is just one piece of the puzzle.