Import source: app/src/components/lazy-diagram

Import the existing local project snapshot. This commit organizes existing files; it does not represent newly developed functionality.

app/src/components/lazy-diagram.jsx

@@ -0,0 +1,13 @@
+import { lazy, Suspense } from 'react';
+
+const DiagramRendererLazy = lazy(() =>
+  import('../../teknav-diagrams.jsx').then(m => ({ default: m.DiagramRenderer }))
+);
+
+export function LazyDiagram(props) {
+  return (
+    <Suspense fallback={<div className="tek-diagram-skeleton" aria-hidden="true" />}>
+      <DiagramRendererLazy {...props} />
+    </Suspense>
+  );
+}