pub fn render_as_content(value: &ValueWord) -> ContentNodeExpand description
Render a ValueWord value as a ContentNode using Content dispatch.
Dispatch order:
- If value IS a ContentNode → return as-is
- If a user-defined Content impl exists → call user’s render()
- If value type has a built-in Content impl → produce structured output
- Else → Display fallback → ContentNode::plain(display_string)