The Budget reform contract's household route errors in the qualification gate: policyengine.uk is None #650

Every UK qualification candidate since the reform-contract gate went live has failed that gate on the wrapper.household route. The candidates are 2.134.5, 2.134.6 and 2.134.7: candidate PRs #639, #644 and #647.

The 2.134.7 attempt's report records 15 errors and 1 fail, all on wrapper.household, with:

AttributeError: 'NoneType' object has no attribute 'calculate_household'

Cause

• scripts/check_uk_candidate.py sets POLICYENGINE_SKIP_COUNTRY_IMPORTS=1 when it is imported (line 43).
• With that switch, policyengine/__init__.py sets policyengine.uk = None.
• The contract's household route calls import policyengine as pe; pe.uk.calculate_household(...).

Locally, without the switch, the same route and versions pass. The full 1.1.0 contract on policyengine-uk 2.134.7 gives 773 pass, 0 fail and 0 error.

Fix

The route should import policyengine.tax_benefit_models.uk, the module policyengine.uk names, directly.