Follow hovered links and pin a preview

Pane only immediately follows hovered links beside the source terminal. Pin a link to restore its cached content after a temporary hover, even if a network reply arrives late. Other terminals keep their hover cards. Zero counts disappear from popovers and remain muted in panes; Jira requests larger avatars.

Hiding popovers did not update the pane, so Pane only left stale content. Reading one ticket also needed a way to return to it after checking another link.

Pane only sends hover changes straight to the existing pane. Pin link stores the current preview separately: another hover temporarily replaces it, and leaving restores cached content. Without a pin, the latest hover stays. Explicit Show in pane clears the pin. Repeated hovers are deduplicated and stale replies cannot overwrite a restored pin.

• Zero-count fields are hidden in popovers and muted in panes. Jira uses its 48×48 avatar URL.
• Logic tests cover pin restoration, late replies, deduplication, and keeping other terminals independent. Visual interaction still needs confirmation in a restarted application.

• The source catalogue records no separate caveats for this entry. The implementation and evidence above define its scope.