- Split woo_price into woo_regular_price and woo_sale_price - Sync to WC: if standard=0 sets regular_price, otherwise sets sale_price - Validation: standard price cannot be less than sale price - Both prices shown in mapping UI with sale price highlighted in green - Refresh Prices pulls both values from WC API Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>