While the workspace pane shows a full page (Artifacts, Skills, Messaging, a
plugin route), a sidebar click on the ACTIVE session did nothing: onResumeSession
took focusOpenSession's `true` for the main-session branch as "already on
screen" and skipped the navigate, but fronting the workspace tab doesn't put the
chat back — the page is still routed. The user had to click some other session
and then the active one to get back.
focusOpenSession now reports WHICH surface it fronted ('main' | 'tile' | null),
and focusedSessionNeedsRoute decides: a tile never needs a route (its pane
renders the chat regardless), a main hit does while a page covers the workspace.
Brooklyn Nicholson
ecf8ef970e