Fix passkey authentication

Also prep for better router layout

server/testingEndpoints.go

@@ -0,0 +1,16 @@
+package server
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func setupTestEndpoints() http.Handler {
+	router := http.NewServeMux()
+	router.HandleFunc(
+		"/",
+		func(w http.ResponseWriter, r *http.Request) { fmt.Fprint(w, "test root") },
+	)
+
+	return router
+}