[Init] Initial commit - NetMesh terminal manager

components/SftpSidePanelDeferredMount.tsx

@@ -0,0 +1,38 @@
+import React, { startTransition, useEffect } from 'react';
+
+type SftpSidePanelDeferredMountProps = {
+  children: React.ReactNode;
+  ready: boolean;
+  onReady: () => void;
+};
+
+export const SftpSidePanelDeferredMount: React.FC<SftpSidePanelDeferredMountProps> = ({
+  children,
+  ready,
+  onReady,
+}) => {
+  useEffect(() => {
+    if (ready) return;
+
+    let cancelled = false;
+    const frameId = requestAnimationFrame(() => {
+      if (cancelled) return;
+      startTransition(() => onReady());
+    });
+
+    return () => {
+      cancelled = true;
+      cancelAnimationFrame(frameId);
+    };
+  }, [ready, onReady]);
+
+  if (!ready) {
+    return (
+      <div className="absolute inset-0 z-10 flex h-full items-center justify-center bg-background text-xs text-muted-foreground">
+        Loading…
+      </div>
+    );
+  }
+
+  return <>{children}</>;
+};