Codex app

# Codex app ### New features - Added back and forward buttons in the header so you can move between recent screens more quickly. - Added an **Open in Finder**, **Open in Explorer**, or **Open in File Manager** action from thread menus to jump straight to a thread's project folder. ### Performance improvements and bug fixes - Improved resume and thread error toasts with clearer details when something goes wrong. - Additional performance improvements and bug fixes.