refactor: Improve code quality and fix linting issues

- Fixed all ESLint errors (curly braces and const declarations)
- Cleaned up CSS styles and fixed stylelint issues
- Applied Prettier formatting consistently
- Improved TypeScript type annotations with TODO comments
- Enhanced code structure and readability

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: Zsailer