refac: built-in tools ui component support

src/lib/components/common/FullHeightIframe.svelte

@@ -6,6 +6,8 @@
 	export let title = 'Embedded Content';
 	export let initialHeight: number | null = null; // initial height in px, null = auto
 
+	export let args = null;
+
 	export let allowScripts = true;
 	export let allowForms = false;
 
@@ -63,6 +65,11 @@
 	const onLoad = async () => {
 		requestAnimationFrame(resizeSameOrigin);
 
+		// if arguments are provided, inject them into the iframe window
+		if (args && iframe?.contentWindow) {
+			(iframe.contentWindow as any).args = args;
+		}
+
 		// If we're injecting Alpine into srcdoc iframe and sameOrigin allowed
 		if (iframeDoc && allowSameOrigin && iframe?.contentWindow) {
 			const alpineDirectives = [