feat: validate Worker protocol and verify process crash recovery

internal/transport/httpserver/tasks.go

@@ -214,6 +214,18 @@ func exactFields(raw []byte, t reflect.Type) error {
 	if t == reflect.TypeOf(time.Time{}) || t == reflect.TypeOf(json.RawMessage{}) {
 		return nil
 	}
+	if t.Kind() == reflect.Slice || t.Kind() == reflect.Array {
+		var values []json.RawMessage
+		if err := json.Unmarshal(raw, &values); err != nil {
+			return err
+		}
+		for _, value := range values {
+			if err := exactFields(value, t.Elem()); err != nil {
+				return err
+			}
+		}
+		return nil
+	}
 	if t.Kind() != reflect.Struct {
 		return nil
 	}