Tabs list in the sidebar (akin to TreeStyleTabs)

[emilis]

Please add the feature to have tabs on the left. A tab tree would be even more helpful.

Yes, we TreeStyleTab extension users swear by them 😄 After all, the outline idea was pioneered and developed to augment human intellect by the legendary team lead by Douglas Engelbart (see The Mother of All Demos).

In the context of Gemini, this makes even more sense, because the very limited page UI makes some tasks harder to accomplish. A browser could help with that.