v1.0.0 - Initial Release

Features:
- Multi-format ebook support (PDF, EPUB, MOBI, FB2, CBZ, AZW3, DJVU)
- Built-in readers with highlights and annotations
- DJVU reader with continuous scroll and professional zoom
- PDF tools integration (Stirling-PDF)
- Library organization with collections
- Multiple themes (Light, Dark, Sepia, Nord, Dracula)
- Reading progress tracking
- Auto cover extraction