Model/domain
Khalim Conn-Kowlessar a21d2cc579 Bill an electric second main at its own §12/Table-12a rate 🟩
Closes #1684. `_main_2_space_heating_fuel_cost_gbp_per_kwh` billed an
electric Main 2 at Main 1's space-heating rate. That was a no-op on a
homogeneous off-peak cohort (storage+storage, direct+direct → equal
rates) but mis-billed the HETEROGENEOUS case: an off-peak STORAGE Main 1
(5.5 p/kWh low) + an on-peak DIRECT-ACTING panel Main 2 (15.29 p/kWh
high) rode the storage low rate, under-costing the panel half and
over-rating SAP.

Flip it to bill Main 2 at its OWN Table 12a Grid 1 SH row, the same
per-system resolution Main 1 and a non-electric Main 2 already use — and
the same one `_main_2_high_rate_fraction` already applies, so the scalar
cost and the high-rate split are now consistent.

The docstring's "regresses certs 13/34 (Parkers Hill / Dunley Road)"
warning was stale: those names appear nowhere but that docstring, and
the full guard suite shows zero new regressions (only the two
pre-existing `test_heating_systems_corpus` fails on main). LRHA WAVE 3
fixture 497655371974 (storage+panel) moves +15.3 → -2.5 vs PasHub; cohort
MAE 0.799 → 0.675 (ratchet re-baselined 0.80 → 0.68). within-0.5 holds at
55.3% — the -2.5 residual is PasHub-vs-Elmhurst divergence, not a bug, so
the fixture stays out of the within-0.5 pin. A ground-truth Elmhurst pin
is queued (see docs/HANDOVER_1684_ELMHURST_INPUTS_497655371974.md).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-27 09:06:20 +00:00
..
abri tweaks 2026-07-17 13:21:47 +00:00
addresses Both postcode batchers share one group-preserving packing core 🟪 2026-07-07 13:24:02 +00:00
billing Route an off-peak meter's electric end uses to the day/night carrier 🟩 2026-06-24 17:38:37 +00:00
bulk_document_download Bulk download: match uploaded_files via hubspot_deal_id bridge + add worker observability 2026-07-08 13:58:46 +00:00
data_transformation Let a deterministic guard override the fallback classifier per description 🟩 2026-07-01 09:39:50 +00:00
elmhurst more examples 2026-06-19 09:51:49 +00:00
epc A community override keeps an assessor-observed Group 3 control 🟩 2026-07-03 16:35:08 +00:00
epc_prediction The historic roof description conditions the cohort by form family 🟩 2026-07-06 12:05:56 +00:00
fuel_rates Expose an off-peak meter's standing charge and full day/night blend range 🟩 2026-06-24 17:14:51 +00:00
geospatial feat(geospatial): one-read spatial reference (coords + restrictions) 2026-06-04 17:13:39 +00:00
magicplan Mapper reads 'Individual Trickle Vent' label variant 🟩 2026-06-30 13:44:38 +00:00
modelling Band every continuous SAP score through the published-rating rule 🟪 2026-07-21 10:11:06 +00:00
pashub_fetcher Move the PasHub fetcher into the DDD layer structure 🟪 2026-07-22 13:35:54 +00:00
property feat: thread physical-state-change signal into rebaselining 🟩 2026-06-26 19:15:11 +00:00
property_baseline Persist no Lodged Performance for a predicted Property 🟩 2026-06-30 22:10:57 +00:00
sap10_calculator Bill an electric second main at its own §12/Table-12a rate 🟩 2026-07-27 09:06:20 +00:00
sap10_ml fix(rdsap): RdSAP 10 Table 13 200/280mm solid-brick wall boundary 2026-07-03 12:25:07 +00:00
scenario_export Add default-plan export selection + plan_name column (ADR-0065) 2026-07-22 09:21:38 +00:00
tasks A recorded batch failure carries structured details onto the sub_task outputs 🟩 2026-07-07 11:50:10 +00:00
building_geometry.py feat(modelling): floor Recommendation Generator + ground-floor-area geometry 2026-06-03 09:12:29 +00:00
postcode.py Add UK-postcode format validity to the Postcode value object 🟩 2026-06-29 15:24:18 +00:00