fix(09): WR-16 resolve model columns through embedded structs and explicit column tags

modules/cabana/query.go

@@ -477,24 +477,14 @@ func relationFieldName(model any, relation string) (string, bool) {
 }
 
 func primaryColumn(model any) string {
-	t := reflect.TypeOf(model)
-	for t != nil && t.Kind() == reflect.Pointer {
-		t = t.Elem()
-	}
-	if t == nil || t.Kind() != reflect.Struct {
-		return "id"
-	}
-	for i := 0; i < t.NumField(); i++ {
-		field := t.Field(i)
-		if field.PkgPath != "" {
+	for _, mf := range modelFields(reflect.TypeOf(model)) {
+		if !hasPrimaryKeyTag(mf.Field) {
 			continue
 		}
-		if strings.Contains(field.Tag.Get("gorm"), "primaryKey") {
-			if name := gormColumn(field); name != "" {
-				return name
-			}
-			return field.Name
+		if name := gormColumn(mf.Field); name != "" {
+			return name
 		}
+		return defaultColumnName(mf.Field)
 	}
 	return "id"
 }