fix: update api spec, include description and add default auth scheme

Author: shaunwarman

app/views/email-api.pug

@@ -7,7 +7,7 @@ block body
   // Initialize the Scalar API Reference
   script.
     window.WEB_URL = "#{ config.WEB_URL }";
-    window.API_TOKEN = "#{user[config.userFields.apiToken]}";
+    window.API_TOKEN = "#{user ? user[config.userFields.apiToken] : ""}";
     Scalar.createApiReference("#app", {
       // The URL of the OpenAPI/Swagger document
       url: `${window.WEB_URL}/api-spec.json`,