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Khalim Conn-Kowlessar 9fa98428d0 Slice 83: 1:1 windows expansion in cohort 000490 (3 → 6 entries) 
Closes the final `sap_windows: LEN 6 vs 3` divergence by replacing
the cohort 000490 hand-built's 3-window collapsed encoding with 6
SapWindow entries mirroring the Summary §11 1:1. Single glazing-type
group (PVC double / g⊥=0.76 / U=2.8); per-bp totals preserved:

  Main NW (orient=8): 2.70 m² split 1.26 + 1.44 (2 rows)
  Main NE (orient=2): 0.81 m² (1 row, unchanged)
  Ext1 SE (orient=4): 5.52 m² split 1.92 + 2.16 + 1.44 (3 rows)

Cascade output unchanged: all 11 `_FIXTURE_PINS["000490"]` SapResult
pins remain GREEN at 1e-4 against worksheet `SAP value 57.3979`.

**Cohort 000490 is now fully Layer-2 GREEN** — 4 of 6 cohort certs
(000474, 000477, 000480, 000487, 000490) now zero-diff Layer-2;
000516 is the last cohort cert before returning to cert 001479.

Pyright net-zero.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-25 18:11:12 +00:00
..
domain Slice 83: 1:1 windows expansion in cohort 000490 (3 → 6 entries) 2026-05-25 18:11:12 +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/.