Zero accessibility support — no VoiceOver labels across 60+ view files

[AprilNEA]

Problem

Across 60+ view files, no .accessibilityLabel(), .accessibilityHint(), or .accessibilityElement() modifiers. Screen reader users cannot navigate the app.

Scope

All files under ArcBox/Views/ and ArcBox/Components/.

Fix

Add labels to all interactive elements. Prioritize container/image management flows.

[linear]

ABXD-37