…nate/readme

- Start page/menu UX improvements
- Split action groups into separate cards and align button sizing/icons
- Add Photo mode toggle beside Resume Last Page to hide foreground UI and show background only
- Keep back behavior strict while menu is open (close menu first)

- Visual/theming updates
- Improve header consistency across Bookmarks/Tabs/Check for Updates
- Add Auto/Light/Dark theme selection in Settings
- Remove legacy AMOLED compatibility mapping

- Favicon and tab/bookmark enhancements
- Show cached site icons in Bookmarks and Tabs
- Refactor favicon rendering into shared logic
- Fallback to public_24px when a site does not provide favicon

- Start page background stability + style
- Fix crash risk when setting large background images via sampled decode/caching
- Restore and upgrade default background to dynamic Material-based gradient (theme-aware)

- Donate enhancements
- Add tabbed Donate UI (GitHub Sponsors / Bitcoin) in Settings
- Add same Donate card to Start Page with QR + action button
- Use favorite_24px with pink tint for GitHub Sponsors action

- Documentation updates
- Place docs/img/aabrowser1.png as main showcase image in README
- Add litemode.gif and darkmode.gif to screenshot section

Add configurable start page, tabs, themes, scaling, and quick controls