internal/

Package adapterkit holds the helpers every first-party adapter needs but no vendor SDK touches: schema rendering, the terminal-error rule (with the context-overflow mapping and the marker table mw's retry classifier reads), and the FilePart exactly-one guard.

Package discovery is how an app finds the running Studio with no configuration (plan B3): `weft studio` and `weft dev` write a small file, studio.json, naming the Studio they serve, and weft/otel and weft/runtime read it when nothing else names one.

Package doctor is `weft doctor` (plan B5): it asks a running Studio what it is and how it is wired, and prints one line per check.

Package facadegen writes a facade package: one that re-exports another package's whole exported API under a new import path, so github.com/weftgo/weft (the framework) offers the loop that github.com/weftgo/weft/core (the slim module) implements, under the same names.

Package listen is the Studio command's port policy (plan B2): one default port, 7331, stable and reusable, never silently different.