feat(tui): add switch to last session keybind (ctrl-x o)#9524

DamianB-BitFlipper wants to merge 2 commits intoanomalyco:devanomalyco/opencode:devfrom

DamianB-BitFlipper:switch-to-last-sessionDamianB-BitFlipper/opencode:switch-to-last-sessionCopy head branch name to clipboard