feat: replace non-semantic anchors and add a11y lint checks

[vee1e]

Replace non-semantic anchors and add a11y lint checks

Description

• Replaced non-link <a> usage with semantic elements in affected debugger UI components.
• Updated related styles and breakpoint form labels to preserve behavior and improve accessibility semantics.
• Added eslint-plugin-jsx-a11y config and CI a11y lint step for the touched components.

Additional context

npm run lint:a11y
# pass

npm run coverage
# Test Files: 10 passed, Tests: 20 passed