Khalim Conn-Kowlessar c89206fc7f Slice 55: Elmhurst party-wall code "CU" maps to cavity unfilled ... `_ELMHURST_PARTY_WALL_CODE_TO_SAP10` only recognised the bare "C" and "S" leading codes. Cert 001479 Main §7 lodges "Party Wall Type: CU Cavity masonry unfilled" — the leading token is "CU", which fell through to None and made `u_party_wall` apply the unknown-default U=0.25 instead of the worksheet's lodged U=0.50. Add "CU" → 4 (SAP10 WALL_CAVITY); `u_party_wall(4) = 0.5 W/m²K` matches the worksheet's §3 `Party walls Main … 0.50` row exactly. This widens the chain residual on cert 001479 (cascade SAP 63.17 → 61.90 vs target 69.0094) — not a regression: pre-slice the cascade was UNDER-counting party-wall heat loss (U=0.25 vs the lodged 0.50), which masked over-counting elsewhere. The party-wall U-value is now worksheet-accurate; remaining 7.1 SAP gap will narrow as the other mapper gaps (Ext2 exposed floor, roof insulation thickness, secondary heating SAP code, etc.) land in follow-up slices. All 10 chain tests green (6 cohort + 2 cert-001479 structural pins). Pyright net-zero (35-error baseline preserved on mapper.py). Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>		2026-05-24 22:26:50 +00:00
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domain	Slice 55: Elmhurst party-wall code "CU" maps to cavity unfilled	2026-05-24 22:26:50 +00:00
loaders	demo generated for use in address2uprn	2026-05-08 14:48:15 +00:00
schema	Slice 44: flat_roof_insulation_thickness mapper fix — surface lodged value on SapBuildingPart	2026-05-24 15:28:10 +00:00
search	bolstering testing	2026-04-28 13:46:09 +00:00
surveys	Slice 53: Summary_000487 chain pins SAP at 1e-4 — last cohort cert closed	2026-05-24 21:42:42 +00:00
__init__.py	testing out rebaselining	2026-02-12 22:25:03 +00:00
construction_age_band.py	testing out rebaselining	2026-02-12 22:25:03 +00:00
efficiency.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
floor.py	preparing partiy class	2026-02-05 08:54:27 +00:00
fuel.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
heating_controls.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
hotwater.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
main_heating.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
property_type_built_form.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
roof.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
walls.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
windows.py	testing out rebaselining	2026-02-12 22:25:03 +00:00