READ CAREFULLY THEN REMOVE

Remove bullet points that are not relevant.

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Description

Please provide a clear description of your changes.

---

Type of Change

Please delete options that are not relevant.

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature with breaking changes)
• 📝 Documentation update
• 🎨 UI/UX improvement
• 🔒 Security enhancement
• ⚡ Performance improvement

Areas Affected

Please check all that apply:

• Email Integration (Gmail, IMAP, etc.)
• User Interface/Experience
• Authentication/Authorization
• Data Storage/Management
• API Endpoints
• Documentation
• Testing Infrastructure
• Development Workflow
• Deployment/Infrastructure

Testing Done

Describe the tests you’ve done:

• Unit tests added/updated
• Integration tests added/updated
• Manual testing performed
• Cross-browser testing (if UI changes)
• Mobile responsiveness verified (if UI changes)

Security Considerations

For changes involving data or authentication:

• No sensitive data is exposed
• Authentication checks are in place
• Input validation is implemented
• Rate limiting is considered (if applicable)

Checklist

• I have read the CONTRIBUTING document
• My code follows the project’s style guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in complex areas
• I have updated the documentation
• My changes generate no new warnings
• I have added tests that prove my fix/feature works
• All tests pass locally
• Any dependent changes are merged and published

Additional Notes

still kinda wip and have to clean some stuff

Screenshots/Recordings

[recording](https://www.loom.com/share/9cf4b990760e49969f68321247c4b97a) ---

By submitting this pull request, I confirm that my contribution is made under the terms of the project’s license.

Summary by CodeRabbit

• New Features

  • Introduced a comprehensive theme editor with customizable colors, fonts, and design controls.
  • Launched a public theme marketplace for browsing, installing, and managing community themes.
  • Added modular theme UI components including theme toggles, preset selectors, and user theme management.
  • Implemented an interactive color picker and theme publishing dialog.
  • Enhanced loading overlay accessibility and expanded localization for theme editing.

• Enhancements

  • Applied dynamic theme styles globally for seamless light/dark mode switching.
  • Updated sidebar, mail panel, and settings backgrounds for improved visual consistency.
  • Integrated theme scripts for early theme application on page load.
  • Extended localization with comprehensive theme editor translations in English and Spanish.

• Bug Fixes

  • Improved color contrast warnings and preview accuracy in theme components.
  • Enhanced undo/redo and checkpoint mechanisms in theme editing.

• Chores

  • Added dependencies for color manipulation, UI primitives, and deep equality utilities.

• Documentation

  • Added detailed type definitions, validation schemas, and API routes for theme management.

/claim #883