Designing a CLAUDE.md Context System: How I Give AI Full Project Context Without Re-explaining Anything

Every time I open Claude Code on a new project, it knows who I am, which client I'm working on, what tech stack the project uses, who the key people are, and what my code standards look like. I never re-explain any of it. This is not magic. It is a file system. I run Syntora, a small consultancy with multiple active clients. Each client has its own codebase, its own Supabase project, its own conventions. Switching between them used to mean spending the first five minutes of every session re-teaching Claude what "OD" means or reminding it not to use global singletons. That friction compounds. Over a full day of context-switching, I was losing 30+ minutes to re-orientation alone. So I built a hierarchical context system using CLAUDE.md files. It draws from two ideas that have nothing to do with AI tooling. The Two Ideas Behind the System Real estate LLC isolation. In commercial real estate, the standard structure is one LLC per property with a parent LLC governing all of them. Each prope