Model/packages
Khalim Conn-Kowlessar 53aba1332e §5 slice 8: (73) total_internal_gains_monthly_w + InternalGainsResult
Closes the §5 leaf-function surface:
  - total_internal_gains_monthly_w sums (66) + (67) + (68) + (69)
    + (70) + (71) + (72) element-wise. (71) carries negative sign so the
    losses term subtracts.
  - InternalGainsResult frozen dataclass bundles all 7 line refs plus the
    total as 12-tuples — the typed payload returned by the orchestrator.

Verified against Elmhurst U985-0001-000490 (73)m to ≤1e-2 W/month.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-20 18:38:46 +00:00
..
domain §5 slice 8: (73) total_internal_gains_monthly_w + InternalGainsResult 2026-05-20 18:38:46 +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

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/.