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

modules/cabana/http.go

@@ -842,21 +842,38 @@ func projectRow(row any, controller pact.AdminController, cols []ListColumn) map
 	return out
 }
 
+// fieldByColumn returns the model field stored in column, looking through
+// embedded structs such as gorm.Model. A field with an explicit `column:` tag is
+// matched by that tag alone; only an untagged field falls back to its Go name
+// (case-insensitive) or GORM's default column name for it, and a shallower
+// field shadows an embedded one, as in Go.
 func fieldByColumn(v reflect.Value, column string) reflect.Value {
 	if v.Kind() != reflect.Struct {
 		return reflect.Value{}
 	}
-	t := v.Type()
-	for i := 0; i < t.NumField(); i++ {
-		field := t.Field(i)
-		if field.PkgPath != "" {
-			continue
-		}
-		if gormColumn(field) == column || strings.EqualFold(field.Name, column) {
-			return v.Field(i)
+	fields := modelFields(v.Type())
+	best := -1
+	for i := range fields {
+		if gormColumn(fields[i].Field) == column && (best < 0 || len(fields[i].Path) < len(fields[best].Path)) {
+			best = i
 		}
 	}
-	return reflect.Value{}
+	if best < 0 {
+		for i := range fields {
+			untagged := gormColumn(fields[i].Field) == ""
+			if untagged && (strings.EqualFold(fields[i].Field.Name, column) || defaultColumnName(fields[i].Field) == column) && (best < 0 || len(fields[i].Path) < len(fields[best].Path)) {
+				best = i
+			}
+		}
+	}
+	if best < 0 {
+		return reflect.Value{}
+	}
+	field, err := v.FieldByIndexErr(fields[best].Path)
+	if err != nil {
+		return reflect.Value{}
+	}
+	return field
 }
 
 func gormColumn(field reflect.StructField) string {