Model/domain
Khalim Conn-Kowlessar eea5d3a5a8 fix(tariff): map electric boilers 191/193-196 to their Table 12a Grid 1 rows
SAP 10.2 Table 4a electric boilers (PDF p.170) split across three distinct
Table 12a Grid 1 SH rows (PDF p.191), not one "direct-acting" family as the
stale TODO in `_table_12a_system_for_main` implied:

  - 191 Direct-acting electric boiler   -> "Direct-acting electric boiler (a)"
    row: 7-hour 0.90, 10-hour 0.50 (NOT the 1.00/0.50 "Other direct-acting
    electric heating" room-heater row).
  - 193/194/195/196 Electric dry core / water storage boiler -> "Electric dry
    core or water storage boiler" row: 7-hour 0.00 (charged wholly off-peak =
    100% low rate, identical to the None fallback).
  - 192 Electric CPSU -> Appendix F; left falling through to None (off-peak
    low) until the Appendix-F high-rate cascade is implemented.

The enum + fractions already existed in table_12a.py; only the code->enum
mapping was missing. Resolves the TODO and pins the spec-correct 0.00 for the
storage boilers so 195 can't be mis-"fixed" up to a direct-acting fraction.

Forward guard, 0 corpus impact: storage boilers already billed 100% low via
the None fallback, and all corpus 191 certs are on standard tariff (Table 12a
off-peak split never fires). Corpus gauge unchanged 73.3% / MAE 0.774.

Pin: test_electric_boilers_191_195_map_to_distinct_table_12a_grid1_rows.
pyright strict gate not run locally (pyright not installed in this container).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-23 21:48:59 +00:00
..
addresses standardist Address 2026-05-22 10:13:32 +00:00
billing feat(modelling): attribute per-measure bill savings via a telescoping cascade 2026-06-03 18:01:11 +00:00
data_transformation moved classifier data transformation to an easy one 2026-06-01 14:53:34 +00:00
epc move overlas to its own thing 2026-06-18 10:04:14 +00:00
epc_prediction refactor(epc-prediction): PR review — rename ComparableProperty, relocate PredictionTarget 2026-06-16 13:34:44 +00:00
fuel_rates feat(fuel-rates): FuelRates snapshot + repository foundation (ADR-0014) 2026-06-02 09:29:07 +00:00
geospatial feat(geospatial): one-read spatial reference (coords + restrictions) 2026-06-04 17:13:39 +00:00
magicplan add todo comment for named ranges 2026-06-10 13:32:11 +00:00
modelling Overlay landlord property-type and built-form corrections onto the Effective EPC 🟩 2026-06-17 18:06:29 +00:00
property Fold landlord overrides onto the lodged EPC to form the Effective EPC 🟩 2026-06-16 17:18:31 +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 fix(tariff): map electric boilers 191/193-196 to their Table 12a Grid 1 rows 2026-06-23 21:48:59 +00:00
sap10_ml fix(uvalues): thread glazing gap into pre-2002 window U fallback (RdSAP 10 Table 24, PDF p.50) 2026-06-20 14:14:31 +00:00
tasks added postcode splitter rewrite to ddd 2026-05-19 16:35:09 +00:00
building_geometry.py feat(modelling): floor Recommendation Generator + ground-floor-area geometry 2026-06-03 09:12:29 +00:00
postcode.py get rid of comments 2026-05-20 13:21:11 +00:00