Fixed a bug where the mobile window could get stuck on a blank/gray screen (mainly on Linux) instead of loading the page

New in-window toolbar with device switcher (iPhone / Android / iPad), rotate, reload and screenshot buttons
Screenshots are copied to the clipboard and can be saved to a "Downloads/Firefox Mobile Toggle" folder
Closing the original tab no longer closes the mobile preview window
Refreshed toolbar icons
Removed an unused right-click menu item and the related permission

Added a Reload button to the in-window toolbar
Closing the original tab no longer closes the mobile preview window
New toolbar icons (rotate, reload, camera)
Screenshots are copied to the clipboard and saved to a "Firefox Mobile Toggle" folder

New in-window toolbar: device switcher (iPhone / Android / iPad), rotate, and screenshot
Screenshots are copied to the clipboard, with an optional Download button
Added Client Hints (Sec-CH-UA-Mobile / Sec-CH-UA-Platform) for more accurate mobile rendering
Open each tab independently; keep several mobile previews open at once
New app icon and fully English UI
Keyboard shortcuts: Alt+Shift+M (toggle), Alt+Shift+S (screenshot)