update

apps/api/internal/processing/specs.go

@@ -146,6 +146,14 @@ func isInvalidAttributeKey(k string) bool {
 	return !hasLetter
 }
 
+// coreCharacteristicAttrKeys are always allowed on V1 process items even when
+// the company has no matching attributes row (common dims/brand/model).
+var coreCharacteristicAttrKeys = map[string]struct{}{
+	"brand": {}, "product_model": {}, "warranty": {},
+	"width": {}, "height": {}, "depth": {}, "weight": {},
+	"energy_class": {}, "color": {}, "material": {},
+}
+
 // SanitizeProductAttributes keeps characteristic attrs for API/storage and drops
 // core product fields that belong on the V1 item root (title, description, images, …).
 func SanitizeProductAttributes(attrs map[string]any) map[string]any {
@@ -153,11 +161,48 @@ func SanitizeProductAttributes(attrs map[string]any) map[string]any {
 }
 
 // SanitizeV1ProcessAttributes is the stricter poll projection: also drops eprel_*
-// keys (those are exposed on item.eprel).
+// keys (those are exposed on item.eprel). Without an allowlist, feed junk specs
+// (zavora, vzmetenje, …) can remain — prefer SanitizeV1ProcessAttributesAllowed.
 func SanitizeV1ProcessAttributes(attrs map[string]any) map[string]any {
 	return sanitizeProductAttributes(attrs, true)
 }
 
+// SanitizeV1ProcessAttributesAllowed sanitizes then keeps only core characteristic
+// keys plus company attribute_key values (canonicalized).
+func SanitizeV1ProcessAttributesAllowed(attrs map[string]any, allowed map[string]struct{}) map[string]any {
+	return FilterAttributesByAllowed(sanitizeProductAttributes(attrs, true), allowed)
+}
+
+// FilterAttributesByAllowed keeps coreCharacteristicAttrKeys plus keys present in
+// allowed (after canonicalizeAttrKey). When allowed is nil, returns attrs unchanged.
+func FilterAttributesByAllowed(attrs map[string]any, allowed map[string]struct{}) map[string]any {
+	if len(attrs) == 0 {
+		return map[string]any{}
+	}
+	if allowed == nil {
+		return attrs
+	}
+	out := make(map[string]any, len(attrs))
+	for k, v := range attrs {
+		canon := canonicalizeAttrKey(k)
+		if canon == "" {
+			continue
+		}
+		if _, ok := coreCharacteristicAttrKeys[canon]; ok {
+			out[canon] = v
+			continue
+		}
+		if _, ok := allowed[canon]; ok {
+			out[canon] = v
+			continue
+		}
+		if _, ok := allowed[strings.ToLower(strings.TrimSpace(k))]; ok {
+			out[canon] = v
+		}
+	}
+	return out
+}
+
 func sanitizeProductAttributes(attrs map[string]any, dropEPREL bool) map[string]any {
 	if len(attrs) == 0 {
 		return map[string]any{}