refactored render to internal/render added logging with charmbracelet/log

Output/config/config.go

@@ -0,0 +1,19 @@
+package config
+
+import (
+	"fmt"
+	"github.com/spf13/viper"
+)
+
+func Init() {
+	viper.SetConfigName("config") // config.yaml
+	viper.SetConfigType("yaml")
+	viper.AddConfigPath(".")
+
+	err := viper.ReadInConfig()
+	if err != nil {
+		fmt.Println("No config file found; using defaults.")
+	}
+
+	viper.SetDefault("app.theme", "dark")
+}