Import and lookup
=================

Seam: Imports, path, the registry, item lookup and curry.info metadata.
File imports retain is_sourcefile=True until the session lane lands.

Run ./run after make stage, or run unit_boundary.py from tests/.
The run script selects the staged Python and the session backend.
expected.out records stdout; stderr is shown on failure by the test.
The driver comments explain the individual probes and their order.
The corpus README.md lists the backends and the oracle for this driver.
