pub fn assemble_preview(source: &str) -> Result<String, ParseError>Expand description
Assemble a self-contained, sandboxable iframe srcdoc that COMPILES-and-RUNS an LGX
app entirely in the browser — the wasm module is embedded inline (no file to fetch), the
shared DOM runtime drives the iframe’s own document, and the default theme makes it
beautiful. Powers the Studio’s live “Web” preview. On a build failure returns the
ParseError (render it with error_overlay_html).