Phase 1b of the Columbia Coatings integration: the typed read client and
its configuration, ahead of the sync/mapper service.
- ColumbiaProductDtos: wire-shape models for GET /products. tiered_pricing
is captured as JsonElement because the API returns it as an object on
simple products but an empty array on variable ones — binding it raw
avoids a deserialization throw; the mapper interprets it.
- IColumbiaCoatingsApiClient / ColumbiaCoatingsApiClient: pages the catalog
via GET /products (NOT the export download_url, which is Cloudflare-blocked
for server clients). Sends X-API-Key from config, honors 429/Retry-After,
and THROWS on any page failure so a partial pull can never be mistaken for
the full catalog (protects the later discontinuation sweep).
- ColumbiaIntegrationConstants: single home for config keys, setting keys,
and the derived Source/manufacturer/category values.
- Config: Columbia:ApiKey (blank — secret supplied per environment) and
Columbia:BaseUrl in appsettings.
- SeedColumbiaSyncSettings migration: seeds SuperAdmin-managed platform
settings ColumbiaSyncEnabled (off by default), ColumbiaSyncIntervalDays
(7), and last-sync tracking, under a new "Integrations" group.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
