Physical word transport and a ten-dimensional completed square sector.
No DSRG90 is claimed. The supplied matrices all have nonzero full-square defect.

Independent standard-library verifier (checks all32 positive ingredients):
python src/verify_cell_transport_sector.py results/cell_transport_boundary_linear90_20261027.json

Reproduce44 linear boundary models (numpy, ortools):
python src/cell_transport_boundary_linear.py --source results/cyctour5_asymmetric_quotient90_20261027.json --control results/cell_transport_control18_s4_20261027.json --seconds 2 --workers 5 --out regenerated.json

See notes/cell_transport_boundary_reduction_20261027.md for the proof of the
scalar norm reduction, the44 outside-translation classes, exact U/X action,
known18 control, scope, and UNKNOWN full-completion result.
Negative solver statuses are not certified by the independent checker.
