Khalim Conn-Kowlessar f61d74a327 docs: ADR-0008 physics-as-feature + v16.0.0 schema bump ... Captures the slice-16 plan decisions before code lands: - Mid-physics: predicted_ecf + predicted_log10_ecf, NOT predicted_sap_score - Cost scope: heating + DHW + lighting (no PV/pumps/secondary) - Crude annual heat-demand calc (HLC * HDH / efficiency) - Cascade-defaulting U-value imputation - envelope_heat_loss_w_per_k sums all parts; extension_1 only as discrete features (88% null drops extension_2) - v16.0.0 MAJOR bump (rename secondary_dwelling_* -> extension_1_*); coordinated cutover with AutoGluon repo + scoring lambda - LightGBM objective="mape" for sap_score+peui_ucl in 16g; sample weights deferred		2026-05-17 11:20:40 +00:00
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adr	docs: ADR-0008 physics-as-feature + v16.0.0 schema bump	2026-05-17 11:20:40 +00:00