[WIP] Add high contrast mode with user toggle and storage

[Copilot]

• Inspect repository structure, UI layout/header, and testing patterns for theme-related changes
• Implement a high-contrast toggle in the header with accessible semantics
• Persist high-contrast preference in localStorage and apply it on page load
• Add focused E2E coverage for toggle behavior and preference persistence
• Run targeted and then full quality checks via the quality-checks skill
• Run parallel validation (Code Review + CodeQL) and address any findings

• Fixes Add high contrast mode to website #17

[coderabbitai]

Important

Review skipped

Bot user detected.

To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 9edaf477-cd8c-4e54-bc98-00cce52e0a78

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}