Fix: marshal default chat start in the init func

bot.go

@@ -43,8 +43,8 @@ var (
 		{Role: "system", Content: systemMsg},
 		{Role: assistantRole, Content: defaultFirstMsg},
 	}
-	defaultStarterBytes, _ = json.Marshal(chatBody.Messages)
-	interruptResp          = false
+	defaultStarterBytes = []byte{}
+	interruptResp       = false
 )
 
 // ====
@@ -234,6 +234,11 @@ func init() {
 		logger.Error("failed to open log file", "error", err, "filename", logFileName)
 		return
 	}
+	defaultStarterBytes, err = json.Marshal(defaultStarter)
+	if err != nil {
+		logger.Error("failed to marshal defaultStarter", "error", err)
+		return
+	}
 	logger = slog.New(slog.NewTextHandler(file, nil))
 	store = storage.NewProviderSQL("test.db", logger)
 	// https://github.com/coreydaley/ggerganov-llama.cpp/blob/master/examples/server/README.md