The "latest EPC per UPRN" selection ordered by e.id DESC, but row-id does not
track recency: a gov-EPC cert re-ingested after a PasHub survey lands with a
higher e.id, so the header/perf reads silently picked the stale gov cert (wrong
TFA, lodgement, property_type, current band) on 3 of portfolio 838. Order by the
effective lodgement date (registration -> completion -> inspection) DESC NULLS
LAST, e.id DESC tiebreak.
Compose the descriptive fabric from the structured SAP fields a re-survey lodges
(no gov-EPC prose): walls/roof/floor from the main epc_building_part, heating and
hot water from epc_main_heating_detail + the water-heating codes, decoded with
the SAP engine's own code space (fabric_description.py). Structured fabric wins
where present and falls back to the gov-EPC prose otherwise; windows and lighting
stay on prose (their per-element codes do not reconstruct the dwelling phrase).
Add built_form (epc_property, code-decoded) and property_age_band (building part
construction_age_band -> RdSAP date range) columns.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
