Add comprehensive accessibility improvements
HTML Accessibility:
- Add ARIA roles to tab navigation (role="tablist", role="tab", role="tabpanel")
- Add aria-selected to tab buttons with JS toggle
- Add aria-controls and aria-labelledby for tab/panel relationships
- Add aria-label to emoji icon buttons (settings, reply, edit, delete)
- Add aria-pressed to view toggle buttons
- Add labels for form inputs (comment textarea, dependency inputs, file input)
- Add .sr-only utility class for screen-reader-only content
CSS Accessibility:
- Add .sr-only class (visually hidden, accessible to screen readers)
JavaScript:
- Update showTab() to toggle aria-selected on tab buttons
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Jared Vititoe
73162d9a9b