Mouse back/forward and Cmd+[/] should navigate between past screens and agents

[panrafal]

I bounce between workspace tabs, other workspaces, Settings, and plugin pages. Then I hit Cmd+[ or mouse's back button, expecting to retrace that to the exact tab I've started from. Instead I land on the last agent.

Every IDE or page does this. My hands already do it.

If it worked: back and forward walk the places I actually visited this session — tabs, workspaces, Settings sections, plugin pages. Skip tabs I’ve closed. Don’t remember anything across reloads. Mouse side buttons on web/desktop; keyboard shortcuts I can bind if I want them. Cmd+[ is already assigned, but I believe it's a wrong default, as basically all dev apps use Cmd+[ for navigating back.

I've implemented this in #4364 and using it daily. Am I the only one missing this?