Initial commit: Memind H5 portal with MindSpace, Plaza, and agent jobs.

Track application source and tests; exclude local env, user workspaces, and runtime data via .gitignore.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/hooks/useNetworkStatus.ts

@@ -0,0 +1,20 @@
+import { useEffect, useState } from 'react';
+
+export function useNetworkStatus() {
+  const [online, setOnline] = useState(
+    typeof navigator !== 'undefined' ? navigator.onLine : true,
+  );
+
+  useEffect(() => {
+    const handleOnline = () => setOnline(true);
+    const handleOffline = () => setOnline(false);
+    window.addEventListener('online', handleOnline);
+    window.addEventListener('offline', handleOffline);
+    return () => {
+      window.removeEventListener('online', handleOnline);
+      window.removeEventListener('offline', handleOffline);
+    };
+  }, []);
+
+  return online;
+}