Model/packages
Khalim Conn-Kowlessar c9eb231a9c §4 HW slice 3: docs — SPEC_COVERAGE row + Remaining work + golden note
- SPEC_COVERAGE §4 row: closed (combi-gas single-rate) — PCDB Table
  3b + Eq D1 cascade. 000474 + 000490 HW kWh ≤0.1% of PDF.
  Remaining §4 work list refreshed: storage / FGHRS rows, Table 3c
  two-profile, Electric CPSU Appendix F, instant electric shower,
  Appendix L lighting (separate ticket per memory).
- §4 slice progress table: (61)m row updated with `760e25de` commit
  pointer + dual sourcing (Table 3a default + PCDB Table 3b row 1
  override).
- test_golden_fixtures.py: SAP_TOLERANCE stays ±11 — §4 HW closure
  doesn't shift the oil-heated golden certs because they aren't PCDB
  Table-3b-listed. Comment block updated with the §4 slice 2 note.

No code changes — docs + tolerance comment only.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-21 22:58:16 +00:00
..
domain §4 HW slice 3: docs — SPEC_COVERAGE row + Remaining work + golden note 2026-05-21 22:58:16 +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/.