Cloud windows now open in a dedicated tab panel when Tab Panels mode is enabled.
Opening or linking cloud windows now provides restore options (groups, lazy loading, panels) and merge strategy selection.

Cloud window restoration experience is now smoother with progressive tab loading and real-time progress feedback.
Window switcher uses expand/collapse interaction with window icons for a cleaner experience.

Fixed active tab state confusion when tiling multiple windows in the side panel.
Fixed sticky window header text overlap when scrolling the tab list.
Fixed cloud windows not appearing in the window switcher after closing a synced window.
Fixed cloud window restore not suspending tabs when lazy loading is enabled.
Fixed cloud sync status icon not displayed in tree view mode.
Fixed page sidebar not reflecting theme and settings changes in real-time.
Fixed window cloud sync not triggering after extension update, service worker restart, or snapshot restore.