protoc-gen-go-jet

Author Postgres migrations when a persisted proto changes, manage the protoc-gen-go-jet generation pipeline, wire new resources, and diagnose drift. The `protoc-gen-go-jet diff` subcommand either copies ddl.sql verbatim (first-ever migration) or emits an LLM brief (the caller authors the ALTER SQL beneath it); `protoc-gen-go-jet check` re-runs the whole chain and fails if it diverges from ddl.sql. Trigger when a proto with `(gojet.v1.table)` changes, a new persisted resource is added, or `protoc-gen-go-jet check` reports drift.