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Wires the §10a Fuel costs worksheet block (slice 1's orchestrator) into the cert → calculator pipeline: - CalculatorInputs.fuel_cost composite slot (default zero sentinel for synthetic-test constructions that don't supply one). - cert_to_inputs._fuel_cost precompute — resolves Table 32 prices per end-use, calls additional_standing_charges_gbp per Table 12 note (a) for gas/off-peak gating, calls the fuel_cost orchestrator. Off-peak certs return a zero FuelCostResult sentinel so the legacy scalar fuel-cost-per-kWh fallback fires; Table 12a high-rate fraction split + Table12aSystem mapping is deferred to a future §10a follow-up slice. - calculator delegates total_cost / per-end-use cost intermediate dict entries to inputs.fuel_cost when the precompute is non-zero; falls back to the legacy inline kWh × price math for synthetic CalculatorInputs constructions (will be removed when the test corpus migrates to fuel_cost=). Outcomes: - 000490 SAP rating ceiling tightened 6 → 2 (marquee close-out: the cost gap was wrong-table + missing-standing-charges, not the spec-version drift the handover suspected). - 000474 SAP rating ceiling loosened 2 → 4 (post-§10a Table 32 + standing-charge fix exposes upstream §4 HW kWh + Appendix L lighting overestimates that the wrong pre-§10a prices had been masking). §4 HW worksheet tightening is the next ticket. - Golden corpus SAP tolerance widened 7 → 11 — Table 32 oil price rose +55% (4.94 → 7.64 p/kWh) which moves oil-heated certs whose lodged actual_sap pre-dates Table 32 (ADR-0010 §3 Validation Cohort discipline). - 2 new cert-round-trip conformance tests on test_fuel_cost.py (000474 within existing e2e tolerance; 000490 within 5%). 660 tests passing across the domain package. 0 net new pyright errors on touched modules. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> |
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| .. | ||
| domain | ||
| fetchers | ||
| repos | ||
| utils | ||
| README.md | ||
Shared packages
Workspace packages consumed by services/*. Each package is its own Python distribution with its own pyproject.toml; services import via the workspace dependency mechanism ({ workspace = true }).
| Package | Purpose |
|---|---|
domain/ |
Shared domain types — Property, BaselinePerformance, Plan, Scenario, EpcPropertyData, etc. No persistence, no IO, no business logic. |
repos/ |
Persistence layer — one repo per aggregate. Owns the SQL. Depends on domain. |
fetchers/ |
External API clients (gov EPC, Ofgem, Google Solar, etc.). Depend on domain for response shapes. |
utils/ |
Cross-cutting infra — logging, S3, CloudWatch URL builders, SQS task helpers. |
Adding a new shared package
Only when a real second consumer materialises. Don't pre-shatter (repos-epc, repos-property, ...) — split when a deployment needs to drop a dep, not before.
See ../ara_backend_design.md §11 for the broader monorepo layout and ../CONTEXT.md for the domain glossary that names the types living in domain/.