pub fn interpolate(template: &str, data: &Value) -> StringExpand description
Perform {{ expr }} / {{{ expr }}} interpolation with dot-path resolution.
{{ expr }}— HTML-escaped output (default, safe){{{ expr }}}— raw output (no escaping, for trusted HTML content)
Supports paths like user.name which resolve to data["user"]["name"].
Unresolved expressions are left as-is.