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Khalim Conn-Kowlessar 236782287e pcdb slice 2: runtime gas_oil_boiler_record lookup via Table 105 NDJSON 
Adds the cert-side lookup surface for Table 105: gas_oil_boiler_record(pcdb_id) -> Optional[GasOilBoilerRecord]. NDJSON is loaded once at module import, parsed into a by-pcdb-id dict, and cached by the Python runtime. Lookup is O(1).

Returns None when the cert's main_heating_index_number is not in Table 105 — caller falls back to the existing seasonal_efficiency(...) Table 4a/4b cascade.

Two tests pin the contract: verified Baxi 000098 lookup returns the typed record with brand "Baxi Heating", winter eff 66.0%, summer eff 56.0%; unknown PCDB ID returns None.

Slice 3 wires gas_oil_boiler_record into cert_to_inputs.main_heating_efficiency and water_efficiency precedence cascades per Q5=B (space heating + water heating scalar override).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-21 09:45:28 +00:00
..
domain pcdb slice 2: runtime gas_oil_boiler_record lookup via Table 105 NDJSON 2026-05-21 09:45:28 +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/.