Ln 112 Project Core Creator

This is a documentation generator that ships with four core project documents: requirements, architecture, tech stack, and a patterns catalog. It's designed to run as part of a larger orchestration chain, receiving a context store with discovered project metadata rather than scanning files itself. The architecture doc follows arc42 structure with auto-generated C4 diagrams, and the patterns catalog actually greps your codebase for common patterns like job queues or event emitters. It's strictly idempotent and won't overwrite existing files. The enforcement around no placeholder leakage and stack-appropriate references is unusually strict, which is refreshing if you've ever seen generated docs full of TODOs or Python examples in .NET projects.