ADD: card component and login behavior

backend/internal/server/server.go

@@ -24,6 +24,7 @@ func StartServer(cfg *config.Config) {
 	// Lokaler Fallback (wichtig für die Entwicklung)
 	allowedOrigins := []string{
 		"http://localhost:5173", // Gängiger Vite-Dev-Port
+		"http://127.0.0.1:5173",
 	}
 
 	if cfg.FrontendURL != "" {
@@ -50,11 +51,18 @@ func StartServer(cfg *config.Config) {
 	router.Use(cors.New(config))
 
 	router.POST("/login", func(c *gin.Context) {
-		auth.Login(c, db) // Pass the actual DB connection instead of nil
+		err := auth.Login(c, db)
+		if err != nil {
+			logger.Log.Error().Msg(err.Error())
+		}
 	})
 
 	router.POST("/register", func(c *gin.Context) {
-		auth.Register(c, db)
+		er := auth.Register(c, db)
+		if er != nil {
+			logger.Log.Error().Msg("register error")
+		}
+
 	})
 
 	router.Run(":" + cfg.Port)