docs(changelog): scope appearance bullet to focus ring only

Author: datlechin

CHANGELOG.md

@@ -56,7 +56,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Data grid undo/redo uses the window's UndoManager instead of a private instance, unifying Cmd+Z across editor and grid
 - Right-click during cell editing shows the native text context menu instead of the row menu
 - Multiline cell overlay editor discards the in-progress edit when a column resize fires, instead of silently committing partial text
-- Data grid cell change highlights (deleted, inserted, modified) re-resolve under the active appearance when the user toggles Light or Dark mode mid-session
+- Data grid cell focus ring redraws when the user toggles Light or Dark mode mid-session, picking up the system's appearance-aware focus indicator color
 - Data grid keeps sortedIDs and cachedRowCount paired by calling updateCache() immediately after the SwiftUI bridge writes new sortedIDs to the coordinator, removing a window where the cached count and the sort permutation could disagree
 - Display formats memoized per tab on MainContentCoordinator keyed by schema version, smart-detection setting, and format-overrides version, so ValueDisplayDetector.detect runs once per result schema instead of on every SwiftUI body evaluation