This PR adds theme customization capability for the user by showing them realtime preview of the changes This is a draft PR as there’s still work to be but core functionality works with some bugs

https://github.com/user-attachments/assets/f6bfa771-32ad-4afb-84da-e890e910690b

Type of Change

• ✨ New feature (non-breaking change which adds functionality)

Areas Affected

• User Interface/Experience

Testing Done

Describe the tests you’ve done:

• Cross-browser testing (if UI changes)
• Mobile responsiveness verified (if UI changes)

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

/claim #883 /closes #863

Summary by CodeRabbit

• New Features

  • Added a privacy settings page for managing external images and trusted senders.
  • Introduced new icons: Stop and Lock.

• Refactor

  • Replaced direct data fetching and mutations with React Query and TRPC throughout the app for improved consistency and reactivity.
  • Updated email compose and draft handling to support CC/BCC fields and improved modal behavior.
  • Simplified layout and provider structure for better maintainability.
  • Enhanced chat and AI features with improved UI, example queries, and context-aware prompts.

• Bug Fixes

  • Improved error handling and UI feedback for drafts and settings.
  • Fixed potential runtime errors in summary rendering and mail display.

• Chores

  • Removed a large number of legacy or unused files, including animated icons, old API routes, and deprecated components.
  • Added a .dockerignore file to optimize Docker builds.
  • Updated workflow and Dockerfile for better build performance and clarity.

• Tests

  • Updated hook and mutation usage to align with new data fetching patterns.

• Documentation

  • Improved inline comments and type annotations for better code clarity and maintainability.

• Style

  • Standardized import statements and improved UI consistency across components.

• Revert

  • Removed deprecated or redundant features, such as early access modals and unused homepage components.