### Dev Server REPL

`seite serve` starts a dev server with live reload and an interactive REPL:

```
new <collection> <title> [--lang <code>]  Create new content
agent [prompt]                           Start AI agent or run one-shot
theme <name>                             Apply a theme
build [--drafts]                         Rebuild the site
status                                   Show server info
stop                                     Stop and exit
```

