Initial design routed emex lookups through vehicles.rawData.ssd → dump vehicles
→ vehicle_parts. Smoke test against prod ssd values: 0 / 10 matched. EMEX
regenerates the SSD on every decode session, so sase's stored SSD never
matches the SSD the dump scraper recorded for the same physical vehicle.
Pivot to a catalog-wide bridge that actually works:
catalogs.code ↔ vehicles.rawData.catalogCode (e.g. "RENAULT201910")
part_groups.group_id ↔ categories.externalId (e.g. "11754")
→ parts via vehicle_parts.group_id (dump's parts.group_id is 100% NULL)
Verified coverage on prod's 8287 unique (catalogCode, gid) pairs: 25/26
catalog codes resolve, 7178 pairs hit a part_group (87%), 5919 of those
return actual parts via vehicle_parts (~71% net). Tradeoff: returns all
parts in the (catalog, group) across every variant in the catalog, so the
result is slightly noisier than the live per-vehicle scrape. Acceptable —
parts overlap heavily and the upstream-call savings outweigh the noise.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds an optional local-dump lookup layer in front of the live PartsCatalogs and
EMEX scrapes. When enabled, getCategoryWithPartsInner queries a Postgres
(pcat) or MariaDB (emex) dump for the requested schema/group's parts and
hotspots; on miss it falls through to the existing upstream call unchanged.
Hits avoid the live API, its cooldown, and its rate-limits — direct DB latency.
- New CatalogSourceDbModule with PcatSourceDbService + EmexSourceDbService
(raw SQL, no Drizzle schema modeling — dump shapes are frozen snapshots).
- pcat lookup keys on schema_images.schema_ext_id (the dump's column that
matches sase's pcat groupId; observed ~7% hit rate on prod's 6596 unique
groupIds, of which ~10% have schema_parts → ~3-5% net parts coverage).
Joins schema_parts → parts directly; the dump's part_groups+part_group_items
linkage covers 0 of our hits, so we skip that path entirely.
- emex lookup uses (catalog_id, ssd) → vehicles.id then (vehicle_id, group_id)
→ vehicle_parts → parts + part_images. The ssd is already persisted into
vehicles.rawData.ssd by the existing emex.mapper, no extra capture needed.
Gated behind CATALOG_SOURCE_DB_ENABLED + PCAT_SOURCE_DB_URL / EMEX_SOURCE_DB_URL.
All three default unset, so this commit is a no-op until prod env is configured.
Adds mysql2 dep for the MariaDB client.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
