Chat message rows with optional avatar, metadata, and footer. No Fluxon equivalent.

The component provides visual alignment and tone. The host owns the semantic author label and the message content:

<.message align="end" tone="primary">
  <:avatar><.avatar initials="AL" /></:avatar>
  <:header>You</:header>
  Your message text.
  <:footer>Just now</:footer>
</.message>

align accepts start or end, and tone accepts surface or primary.