The system runs on TanStack Start with a file-based router. Every public URL is a route file under src/routes; there is no parallel page framework. Backend logic runs as server functions (createServerFn) for app-internal calls and as file-based server routes under src/routes/api for webhooks and cron.
Data lives in one Postgres schema behind row-level security. Roles are stored in a dedicated user_roles table and checked through a security-definer function — never on profiles, never in localStorage.
Intelligence is organised as numbered Brains (3.0 through 11.0) plus the Kernel Copilot. Each Brain is a module surface, not a separate deployment. Adding a new capability means adding to the kernel, not forking it.