- Enrich order detail items with NOM_ARTICOLE data for direct SKUs
(SKU=CODMAT) that have no ARTICOLE_TERTI entry
- Validate CODMAT exists in nomenclator before saving mapping (400)
- Block redundant self-mapping when SKU is already direct CODMAT (409)
- Show "direct" badge in CODMAT column for direct SKUs
- Show info alert in quick map modal for direct SKUs
- Display backend validation errors inline in modal
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>