Fix missing config handling and auto-restart after setup

internal/handlers/setup.go

@@ -203,10 +203,11 @@ func (h *SetupHandler) SaveConnection(c *gin.Context) {
 	}
 
 	// Always restart to properly initialize all services with the new connection
+	restartRequired := h.restartSig == nil
 	c.JSON(http.StatusOK, gin.H{
 		"success":          true,
-		"message":          "Settings saved. Please restart the application to apply changes.",
-		"restart_required": true,
+		"message":          "Settings saved.",
+		"restart_required": restartRequired,
 	})
 
 	// Signal restart after response is sent (if restart signal is configured)