feat: default right modifier hotkey

Ariver

2026-07-06 7ed43baaa6be88a55952a3411575922c8d883a08

 C1.source/privatevoice.src/services/engine_service.go

@@ -388,7 +388,7 @@
   if s.cfg == nil {
      cfg, err := config.Load()
      if err != nil {
         cfg = config.Default()
         cfg = config.ExistingConfigFallback()
      }
      s.cfg = cfg
   }