Model/tests/domain
Jun-te Kim 5c11fd35c8 Validate SAP calculator vs Elmhurst; fix reduced-field window U; add accuracy harness
Reduced-field window U: heat_transmission derived the synthesised-window
raw U from u_window(all None) -> the 2.5 placeholder regardless of glazing.
Now routes the (uniform) glazing_type code through u_window (RdSAP Table 24)
so e.g. double pre-2002 reads 2.8, not 2.5. Only the pre-SAP10 reduced-field
path is affected (21.0.1 certs carry per-window U upstream) — the RdSAP-21.0.1
corpus gauge is unchanged at 66.9% within-0.5.

test_real_cert_sap_accuracy: pin uprn_10002468137 (RdSAP-17.1, all-electric
storage heaters) at SAP 61, validated against Elmhurst on identical inputs
(dual off-peak immersion, 110 L cylinder, 2 baths). Our engine reproduces
Elmhurst's fuel cost to the penny; lodged 55 is the old SAP-2012 schema.

Tooling to grow the accuracy corpus:
- scripts/fetch_real_life_epc_sample.py — capture a cert by UPRN into the corpus.
- scripts/compare_epc_paths.py — diff gov-API vs Elmhurst-summary EpcPropertyData
  and run both through the engine, localising mapper vs calculator differences.
- skill validate-cert-sap-accuracy — the end-to-end loop (capture -> Elmhurst
  inputs -> human builds -> compare -> reconcile -> pin in the test).
- skill epc-to-elmhurst-rdsap-inputs reference: corrected immersion (code 1=dual),
  cylinder size (code 2 = Normal/110 L), and bath-count (WWHRS sub-tab) mappings.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-15 15:26:11 +00:00
..
addresses standardist Address 2026-05-22 10:13:32 +00:00
billing refactor(billing): relocate Bill Derivation to domain/billing/ (cross-stage) 2026-06-03 17:19:23 +00:00
fuel_rates feat(fuel-rates): FuelRates snapshot + repository foundation (ADR-0014) 2026-06-02 09:29:07 +00:00
magicplan handle 50 rows in new template file 2026-06-10 16:18:46 +00:00
modelling fix(modelling): HHR overlay sets off-peak immersion type so HW Table 13 applies 2026-06-15 06:53:14 +00:00
property feat(property): Property aggregate + PropertyRepository (#1132) 2026-06-01 16:28:48 +00:00
property_baseline feat(baseline): sap_code_to_fuel normalizes via the calculator's own helper 2026-06-05 18:59:25 +00:00
sap10_calculator Validate SAP calculator vs Elmhurst; fix reduced-field window U; add accuracy harness 2026-06-15 15:26:11 +00:00
tasks tests framework completed 2026-05-20 14:00:19 +00:00
__init__.py added postcode splitter rewrite to ddd 2026-05-19 16:35:09 +00:00
test_building_geometry.py feat(modelling): floor Recommendation Generator + ground-floor-area geometry 2026-06-03 09:12:29 +00:00
test_postcode.py tests framework completed 2026-05-20 14:00:19 +00:00