add accessibility updates

Author: meganrogge

release-notes/v1_100.md

@@ -34,6 +34,21 @@ Welcome to the April 2025 release of Visual Studio Code. There are many updates
 
 ## Accessibility
 
+### Merge editor improvements
+
+The merge editor is now more accessible. To learn about available actions, open the accessibility help dialog within the merge editor (`kb(editor.action.accessibilityHelp)`). Key actions include `Merge Editor: Complete Merge` (`kb(mergeEditor.acceptMerge)`) and `Toggle Between Merge Editor Inputs` (`kb(mergeEditor.toggleBetweenInputs)`). The currently focused input is also now announced to assistive technologies.
+
+### Next edit suggestion enhancements
+
+The new setting `setting(accessibility.signals.nextEditSuggestion)` notifies users when a predicted suggestion is available. Suggestions can be reviewed and accepted through the accessible view (`kb(editor.action.accessibleView)`). Additionally, `setting(accessibility.signals.diffLineAdded)` and `setting(accessibility.signals.diffLineRemoved)` provide audio cues during navigation to make diff review accessible.
+
+### Review Copilot user requests from the accessible view
+
+When in agent mode, Copilot will sometimes require user permission to run actions. Now, these actions can be reviewed from within the accessible view (`kb(editor.action.accessibleView)`).
+
+### Unique accessibility sounds
+
+`setting(accessibility.signals.save.sound)` now has its own distinct sound and no longer shares audio with `setting(accessibility.signals.terminalCommandSucceeded.sound)`.
 
 ## Workbench