Address ARIA role gaps flagged by the accessibility report

[RUKAYAT-CODER]

Background

The accessibility report lists components missing required ARIA roles. Add the missing roles.

Files to modify (2-3)

src/lib/accessibilityReporting.ts
src/utils/accessibilityUtils.ts

Acceptance Criteria

Implemented across the listed files

Unit/integration tests added or updated and passing

No regression; follows project coding standards