I'm in the same boat as the parent comment. OpenCode has been my daily driver for a while (love the custom agents that I can easily create).
I'm working at the same time with 3-4 different projects and multiple tasks inside the same project.
Earlier with the sidebar I could easily go back to review previous chats, as I'm often working on multiple separate but somewhat connected tasks inside the same branch. Having just a tab for context is both visually limiting (personal preference probably).
The worktree support could use a configuration for setup, running and teardown (look at Jean for that - works pretty well) as a way to have more complex setup. In my case with Rails + Vue apps, each worktree would then have separate db, rails+vite ports, etc so that I can visually check multiple completed tasks in isolation.