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Khalim Conn-Kowlessar 13719e010a Slice 28: §8c + §8f cascade pins (48/48) 
Adds `space_cooling_section_from_cert(epc)` and
`fabric_energy_efficiency_from_cert(epc)` to the cert→inputs cascade.

§8c (lines 100..108) — all 6 Elmhurst fixtures have
`has_fixed_air_conditioning=False` so f_C=0 collapses (107)/(108) to
zero, (101) η_loss=1 for every month (γ=0 branch), (103) gains=0, and
(106) intermittency follows the spec Jun-Aug mask 0.25. (100), (102),
(104) depend on H × (24 − T_e) per fixture and are not asserted in the
cascade (covered by `test_space_cooling.py` synthetic-positive case).
42/42 §8c pins PASS.

§8f (line 109) — Fabric Energy Efficiency = (98a)/(4) + (108). For all
6 fixtures (98b) solar space heating = 0 and (108) = 0, so (109) = (99)
exactly. 6/6 §8f pins PASS.

Cascade scoreboard: 348/348 → 396/396 (§7..§8f closed).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-24 00:01:30 +00:00
..
domain Slice 28: §8c + §8f cascade pins (48/48) 2026-05-24 00:01:30 +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/.