Nx

This gets Claude up to speed on Nx monorepo conventions and workflows. You'll want it when you're scaffolding projects, setting up module boundaries, or debugging why your build cache isn't hitting. It covers the practical stuff like project.json configuration, nx affected commands for CI, and the tag-based dependency constraints that keep your architecture clean. The guidance on keeping apps thin and pushing logic into libs is solid advice that actually matters at scale. Honestly most useful when you're either setting up a new workspace or onboarding someone who needs to understand why your monorepo is organized the way it is.