improve handling of empty/incomplete twitch config

main.go

@@ -40,14 +40,8 @@ func main() {
 		}
 	}
 
-	srv := gin.Default()
-	srv.Use(gin.LoggerWithConfig(gin.LoggerConfig{
-		SkipPaths: []string{
-			"/twitch/public",
-			"/music/public",
-			"/learning/public",
-		},
-	}))
+	srv := gin.New()
+	srv.SetTrustedProxies([]string{"127.0.0.1", "::1"})
 
 	learningService := learning.New(ctx, learning.ServiceConfig{
 		TitleFilePath: "learning-title.txt",