Optional right side panel

[ArthurValadares]

Hello!

I would like to request a feature: an optional customisable right side panel. At least for me, access the save pages, and the history through the options in the tool bar every time is tedious and discourages me to use. Would be great acess both just moving the cursor to the right side, just like the vertical tabs panel. Firefox 136 suport a right side panel, unfortunately, is not practical or integrated to Zen design.

Furthermore, customise the panel to show the favourites, the history or split both vertically would be great. I'm open to clarifying anything that's unclear and discussing the functionality in more detail. I'll completely understand if it's not a priority, viable, popular, or targeted.

Thank you in advance.