style: improve delete button integration within profile tabs

feat: add Edit Lists toggle button to hide/show profile delete buttons

feat: add profile tabs functionality with separate task lists

feat: add Clear All button and remove dark mode toggle

fix: make background image cover entire viewport and improve overall styling

feat: restore background image and improve component visibility

fix: implement proper style handling in App and TaskChecklist components

fix: correct CSS syntax in index.css

fix: remove remaining React code from index.html

fix: improve Node.js setup and caching in workflow

fix: update workflow paths to match repository structure

fix: remove inline React code from index.html

fix: correct HTML structure and remove redundant script tags

fix: remove duplicate deployment steps in workflow

fix: remove duplicate deployment steps and add clean step