Model/docs/migrations
Khalim Conn-Kowlessar 2c8c299fde docs(migration): add the Bill Derivation block to the property_baseline table (ADR-0014)
Slice 5b: update the FE-owned migration spec so the other repo can create the
bill columns in parallel.

- Bill block: per-section delivered kWh + cost (heating, hot water, lighting,
  appliances, cooking, pumps/fans, cooling) + standing_charges_gbp,
  seg_credit_gbp, total_annual_bill_gbp, fuel_rates_period.
- space_heating_kwh / water_heating_kwh (RHI recorded demand) marked SUPERSEDED
  by heating_kwh / hot_water_kwh (calculator delivered fuel); kept until the bill
  populates, then dropped.
- Cooling section kept (mostly 0 but affects the bill, cheap to store).
- Records the calculator-load-bearing posture (effective_* may differ from
  lodged_* for pre-10.2) and that columns are defined now / populated when the
  SapResult->EnergyBreakdown adapter + BillDerivation wiring land.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-02 10:13:23 +00:00
..
epc-property-round-trip-fidelity.md feat(epc): persist renewable_heat_incentive — full round-trip equality (#1137) 2026-05-30 19:30:18 +00:00
property-baseline-performance-table.md docs(migration): add the Bill Derivation block to the property_baseline table (ADR-0014) 2026-06-02 10:13:23 +00:00