added NAS configuration file; updated MediaViewer to support thumbnail carousel; improved error handling in NASAPI and NASAUTH; refactored various comments for clarity

ServerFiles/.env

@@ -0,0 +1,17 @@
+# SFTP Backend Server Configuration
+
+# Server port
+PORT=3001
+
+# JWT Secret (change this in production!)
+JWT_SECRET=web-token-key
+
+# Node environment
+NODE_ENV=development
+
+# Optional: Default SFTP settings (for testing)
+# DEFAULT_SFTP_HOST=192.168.1.100
+# DEFAULT_SFTP_PORT=22
+# DEFAULT_SFTP_USERNAME=user
+# DEFAULT_SFTP_PASSWORD=password
+