Message Board
Create the built-in message page with a comment provider and barrage.
The message page reuses the configured comment provider. Configure one provider first, then create source/message/index.md:
---
title: Message Board
type: message
comment: true
aside: false
---envelope:
enable: true
line: 10
speed: 20
hover: true
loop: true
page: /message/The page has no message.yml data source. Its content comes from the active Twikoo, Waline, Valine, or Artalk provider. Confirm that the configured envelope.page matches the generated page URL.
