enhancement: screen reader (Narrator) support pass #40

Summary

Make lists, dialogs, menus and the virtual keyboard announce focus changes and states to Narrator.

Motivation

Accessibility is a spec requirement; the current UI sets names but does not announce logical focus changes.

Requirements

• Focus changes raise UI Automation events for the logical focus.
• States (marked, cut, blocked, disabled) are announced.
• Messages never depend only on sound or vibration.

Controller UX

Works with the same controller navigation; Narrator reads the focused element.

Technical Notes

AutomationProperties and automation peers in ControlFS.App.

Acceptance Criteria

• Narrator reads the focused item name and state while navigating with the controller.

Testing

Manual test with Narrator; UI automation assertions where possible.

Dependencies

• None

Priority: medium · Milestone: 2 · Controller-First Windows UI