Every project is a snowflake.
Folder structure is up to the team. AI has to guess where things live.
State can be anywhere: local, Redux, Zustand, Pinia, context, URL params, cookies.
Data fetching is ad-hoc: fetch, axios, SWR, React Query, loaders, server actions.
No canonical description of the running app exists. AI reads source files and infers.
Hundreds of build configs, plugins, and meta-frameworks to learn.