Accessibility & responsive pass on profiler.html

[yakew7]

Summary

Audit profiler.html for accessibility and small-screen behaviour: ARIA roles/labels on the dropzone and results, keyboard operability (the dropzone is already a button — verify focus order and Enter/Space), color-contrast of the green/red bars in both themes, and screen-reader announcement of results after a file is profiled.

Why

The tool should be usable by everyone; a few gaps (live-region for results, contrast on the red under-represented bars) are easy wins.

Tasks

• aria-live region so results are announced after profiling
• Verify keyboard flow + visible focus states
• Contrast check bars/flags in light & dark; mobile layout pass
• Respect prefers-reduced-motion for the smooth-scroll