- Added CSS content-visibility and contain-intrinsic-size to list row
containers in resolver-main.css and resolver-shell.css for off-main-thread
rendering optimization.
- Deferred queue list panel split drag updates to requestAnimationFrame in
web/resolver/actions/queue_methods.js, reducing redundant DOM writes and
guarding against duplicate frames during split dragging.
- Deferred missing browser split drag updates to requestAnimationFrame in
web/resolver/views/missing_browser_methods.js with optional chaining on
split start values, preventing layout thrashing while dragging.