Driving a busy real Chrome via the relay, a single Target.getTargets call
occasionally returns a different window's tabs ('tab list hops windows'). resync
pruned every tracked page absent from that snapshot — including the agent's
explicitly-adopted (pinned) tab — after which active-target resolution fell back
to active_page_index and eval/click/snapshot drifted onto a foreign tab
(about:blank / chrome-extension:// / the user's page), breaking any 3+ step flow.
prunable_target_ids() now protects the pinned active target from snapshot-based
pruning; a genuine close still arrives as Target.targetDestroyed (event drain) and
removes it properly. Unit-tested.
leeguooooo
7085f3bf36