Drives the real `syncBotsHomeWorkspace` against a shell whose reveal
does not hand the tab its zone's active slot — modelled on
`revealTreePane`'s hidden-pane early return — and asserts the passive
reconcile re-fronts once rather than on every pass. Against the
unfixed code the first case remounts the view 21 times for 21 passes.
The other three keep the bound from becoming a regression of its own:
giving up must leave the tab OPEN (a closed home drops the Bots tab
through to the ownerless Sessions composer); a cooperative shell still
gets its legitimate re-front, and gets another one the next time the
tab is genuinely backgrounded, so the budget is per-attempt rather than
one-shot for the life of the process; and an explicit gesture re-fronts
even on a shell where passive reconciles have already given up.
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