Is your feature request related to a problem? Please describe.
The project currently has a placeholder lint script ("lint": "echo 'Add linting later'") and would benefit from proper code formatting and linting to maintain code quality.

Describe the solution you'd like
[ ] Configure ESLint with browser extension and ES6+ rules
[ ] Add Prettier configuration for consistent formatting
[ ] Update package.json scripts to include working lint, lint:fix, and format commands
[ ] Add VS Code workspace settings for auto-format on save
[ ] Fix any existing linting issues in the codebase
[ ] Update Contributing guidelines with linting instructions

Additional context
package.json, .eslintrc.json, .prettierrc, .vscode/settings.json

name: Feature request
about: Suggest an idea for this project
title: '[FEATURE] '
labels: enhancement
assignees: ''