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Khalim Conn-Kowlessar f4352587f7 Appendix L slice 1: annual_lighting_kwh extraction 
Surfaces the SAP10.2 Appendix L L1-L12 annual lighting kWh as a public
free fn alongside lighting_monthly_w. Refactors lighting_monthly_w to
compose it. One source of truth shared by the §5 gains side and the
forthcoming cost side (inputs.lighting_kwh_per_yr) — slice 2 wires
internal_gains_from_cert + cert_to_inputs.

Synthetic L1-L12 test pins a hand-computed dwelling
(TFA=100, N=2.0, C_L=10000, ε=100, D=1.0) at 189.152079 kWh, abs=1e-3.

6-fixture LINE_67 conformance tests (Elmhurst 000474..000516) act as a
regression check on the monthly cosine + 0.85 internal-fraction
composition — all green.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-22 07:44:24 +00:00
..
domain Appendix L slice 1: annual_lighting_kwh extraction 2026-05-22 07:44:24 +00:00
fetchers added potential file scaffolding: 2026-05-15 10:56:53 +00:00
repos added potential file scaffolding: 2026-05-15 10:56:53 +00:00
utils added potential file scaffolding: 2026-05-15 10:56:53 +00:00
README.md added potential file scaffolding: 2026-05-15 10:56:53 +00:00

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/.