Update index.html

Update fmt.Println message from 'Hello' to 'Goodbye'

Update print statement from 'Hello' to 'Goodbye'

Update print statement from 'Hello' to 'Goodbye'

Update print statement from 'Hello' to 'Goodbye'

Refactor index.html with updated structure and styles

Update index.html

Refactor index.html structure and styles

Fix HTML encoding issues in index.html

Refactor background handling and database version

Refactor background handling and database setup

Update index.html with final fixes and adjustments

Refactor index.html for theme management and UI updates

Refactor index.html to add IndexedDB support

Add files via upload