Jun-te Kim e05f873282 Normalize RdSAP ventilation mapping on the degraded 17.0/19.0 paths ... PRD #1385, ventilation family. The 17.0 and 19.0 API mappers dropped lodged ventilation fields that the reference-complete 17.1/18.0/20.0 paths read: * open_fireplaces_count -> open_chimneys_count: hardcoded 0 on both (understating §2 infiltration). * percent_draughtproofed: omitted on both. * 17.0 additionally passed no sap_ventilation block, so the §2 cascade fell back to NATURAL + its default sheltered_sides=2. Restored from the lodged mechanical_ventilation + built_form via the existing _api_* helpers. Semantic parity verified (not just type-equality): built_form and mechanical_ventilation use the same gov code lists the 17.1/18.0/19.0/20.0/21.x paths already map through these helpers; all 244 RdSAP fixtures resolve with zero UnmappedApiCode, and the strict-coverage guard raises on any future divergence. For the current corpus the 17.0 score-mover is sheltered_sides from built_form (every 17.0 cert lodges mechanical_ventilation=0 -> NATURAL). Adds a regression test asserting both paths carry the fields through from_api_response on real certs. Verification: new test 2 passed; test_mapper_corpus 6002 passed; SAP-accuracy / RealCertExpectation regressions pass; pyright unchanged (39 -> 39, pre-existing). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>		2026-07-01 12:17:54 +00:00
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epc	Normalize RdSAP ventilation mapping on the degraded 17.0/19.0 paths	2026-07-01 12:17:54 +00:00
__init__.py	feat(modelling): Epc.sap_lower_bound() — band → minimum SAP (#1160)	2026-06-03 12:50:40 +00:00