- complete redesign of doodling.html to create "Doodle Studio Pro"

- add modern UI with responsive sidebar and tool panels
- implement multiple drawing tools: brush, pencil, eraser, fill, line, rectangle, circle, text
- add canvas manipulation features: zoom, resize, background options
- implement undo/redo functionality with history tracking
- add export options with multiple formats (PNG, JPEG, SVG, WebP)
- implement keyboard shortcuts for all tools and actions
- create notification system for user feedback
- add dark mode support via CSS variables

Author: TobiasMue91