Model/packages
Khalim Conn-Kowlessar 5c20e323da slice 16f: rename secondary_dwelling_* -> extension_1_* (v1.0.0 MAJOR bump)
12 columns renamed; extension_2_* not added (88% null on 250k corpus;
envelope_heat_loss_w_per_k already sums extension_2+ via part-iterator).
ADR-0008.

VERSION 0.4.0 -> 1.0.0 (MAJOR per ADR-0007 versioning policy). Coordinated
cutover with AutoGluon repo + scoring lambda required at deploy time.

features_v16.txt is regenerated from transform.schema() at write-parquet time
(data/ml_training is gitignored; not committed).
2026-05-17 12:05:01 +00:00
..
domain slice 16f: rename secondary_dwelling_* -> extension_1_* (v1.0.0 MAJOR bump) 2026-05-17 12:05:01 +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/.