fixes

apps/api/internal/processing/fill.go

@@ -1,7 +1,6 @@
 package processing
 
 import (
-	"fmt"
 	"regexp"
 	"strings"
 )
@@ -67,10 +66,12 @@ func FillMissingFields(mapped map[string]any, attrs map[string]any) map[string]a
 		}
 	}
 
-	if stringFromAny(out["category"]) == "" {
-		if c := stringFromAny(attrs["category"]); c != "" {
-			out["category"] = c
-		}
+	if c := categoryUniqueIDFromAny(out["category"]); c != "" {
+		out["category"] = c
+	} else if c := categoryUniqueIDFromAny(attrs["category"]); c != "" {
+		out["category"] = c
+	} else if c := categoryUniqueIDFromAny(out["category_unique_id"]); c != "" {
+		out["category"] = c
 	}
 
 	if stringFromAny(out["stock_status"]) == "" {
@@ -142,19 +143,7 @@ func normalizeStockStatusLabel(s string) string {
 }
 
 func stringFromAny(v any) string {
-	if v == nil {
-		return ""
-	}
-	switch t := v.(type) {
-	case string:
-		return strings.TrimSpace(t)
-	case float64, float32, int, int64, bool:
-		s := strings.TrimSpace(fmt.Sprint(t))
-		if s == "<nil>" {
-			return ""
-		}
-		return s
-	default:
-		return ""
-	}
+	// Flatten arrays / #text wrappers; callers that need HTML-stripped descriptions
+	// should use PlainDescriptionFromAny (normalize + V1 enforce do that).
+	return coerceScalarText(v)
 }