Khalim Conn-Kowlessar 42ed6f8e46 Persist the explicit basement-wall determination 🟩 ... RdSAP 10 §5.17 / Table 23. `wall_is_basement` is not a lodged U-value — it is a disambiguation flag selecting WHICH RdSAP default applies, so unlike wall/roof/floor_u_value it must survive the round-trip. Code 6 is canonically SYSTEM-BUILT and the gov-API path infers "basement" from a code-6 heuristic; the Elmhurst site-notes mapper sets wall_is_basement=False precisely to defeat it. Dropping the field inverted the answer — a system-built wall came back as a basement wall, dragging the whole ground floor onto the Table 23 basement-floor U-value via `has_basement`. Declared on no RdSAP schema, so it never arrives via the gov API; the earlier corpus scan showing 0 occurrences measured the wrong population. The Elmhurst site-notes path sets it and those EPCs are persisted (scripts/wchg_elmhurst_ingest.py). Nullable is load-bearing: None = "not stated, use the heuristic", False = "explicitly system-built, do not". Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>		2026-07-21 17:58:26 +00:00
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epc-building-part-fabric-overrides.md	Persist the explicit basement-wall determination 🟩	2026-07-21 17:58:26 +00:00
epc-property-round-trip-fidelity.md	Persist the measured at-rafters roof insulation thickness 🟩	2026-07-21 17:53:17 +00:00
property-baseline-performance-table.md	Document the nullable lodged_* migration for the FE/Drizzle owner	2026-06-30 22:19:54 +00:00
recommendation-material-id.md	feat(modelling): persist recommendation.material_id from the catalogue	2026-06-04 08:26:58 +00:00
recommendation-plan-id.md	docs(modelling): design the plan_recommendations retirement (ADR-0017 amendment)	2026-06-03 20:24:30 +00:00