generate-instance in this machine
The source is at /session/work/generate-instance, the example’s own files, put there when this
agent was opened on it. Read README.md, then src/generate_instance/models.py.
Widget is a tagged union, Field(discriminator="kind"), and every member is a UnifiedModel with
its own table. src/generate_instance/demo.py drains generate_instance and reloads the dashboard
from the database, so what it prints came back through the tables.
make test # the schema and round trip, no model
make demo REQUEST="A hiring dashboard for a 40-person startup"
