Decode persist looked brands up with a case-sensitive eq(), so an
uppercase decode string ("FORD") missed canonical "Ford" → brand_id
NULL + raw uppercase stored as brand_name, splitting one brand across
casing variants in analytics/catalog. Now matches brands
case-insensitively and stores the canonical name. Migration
0013_fix_brand_casing backfills existing rows (60 on prod, 1 on dev).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
