* fix(sidebar): land flip-a's switch-on fixes on main, still dark (no flip)
The fixes found while the sidebar ran from main's feed, without turning
that on: ORCA_SIDEBAR_INPUTS_IS_MAIN stays false, and none of flip-a's
stop-gaps come along.
- Main stops counting a closed tab's terminal once it was asked to stop
and no pane shows it; a failed or refused stop takes the request back,
and a host out of contact stays unverifiable.
- Main fetches a paired server's rows with the transport's normal bound,
so a server slower than 5 s still lists.
- A deferred unread raise flips the folder row it was decided for, and a
read while the owner check is out cancels it.
- Phone: no worktree.ps flash before the feed; a host's last installed
feed stands in while a fresh read is out; it highlights its own
last-opened workspace and a fold never scrolls; projects file under
their project group with the desktop's indent; the collapse spinner
shows only after 500 ms; "Reopen to update" keeps the rows on screen.
- e2e helpers and journeys for the switch-on suite.
* fix(sidebar): keep an owed relay stop marked, clear a thrown stop, and prune pending unread raises
- A stop-and-wait that throws takes its stop request back, like one that fails.
- A final stop the legacy relay still owes stays marked, since the relay retries it.
- Pending unread raises are tracked only while one waits, so the map no longer grows.
- The paired-server fallback poll test gives its third fetch a reply and asserts live.