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Khalim Conn-Kowlessar 62bbf863ff Cohort residual slice 7: PCDB override routes separate_dhw_tests∈{2,3} through Table 3c 
Renames `_pcdb_table_3b_combi_loss_override` → `pcdb_combi_loss_override`
(drop the underscore now that it has a unit-testable contract; helper
is now a public boundary of cert_to_inputs). The gate routes on PCDF
Spec Rev 6b field 48:

    = 1 → Table 3b row 1 (profile M only)         — existing
    = 2 → Table 3c row 1 with DVF branch "M+L"    — new (schedules 2+3)
    = 3 → Table 3c row 1 with DVF branch "M+S"    — new (schedules 2+1)
    other / missing factors → None (Table 3a)

Storage-FGHRS (subsidiary_type ∈ {1, 2, 3}) and storage-combi
(store_type ∈ {1, 2, 3}) configurations stay rejected — they gate
Rows 2-5 of both Tables 3b and 3c, deferred until a fixture exercises
them.

Tests (4 new):
  - PCDB 18118 (Vaillant ecoTEC sustain 24, sep_dhw=2) routes through
    Table 3c with M+L. Element-wise match at abs=1e-12 against direct
    Table 3c invocation with the same inputs.
  - PCDB 16952 (Fondital Itaca KC 24, sep_dhw=3 — the M+S branch) routes
    through Table 3c with M+S. No Elmhurst fixture lodges this record;
    borrow 000477's monthly inputs as the deterministic vehicle.
  - PCDB 16839 (sep_dhw=1) preserves the existing Table 3b row 1 path —
    regression guard.
  - Synthetic skeleton record exercises None-returning branches:
    null record, sep_dhw=0, integral FGHRS subsidiary_type=1, primary
    store store_type=1, missing F2.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-22 13:51:27 +00:00
..
domain Cohort residual slice 7: PCDB override routes separate_dhw_tests∈{2,3} through Table 3c 2026-05-22 13:51:27 +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/.